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Provider profile

Nicolaas GroblerMD

Internal Medicine, Pulmonary Disease

NPI 1720154255
350 S Euclid Ave Ste C, Upland, CA 91786909-591-6575

2027 Medicare Advantage

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Medicare Advantage plans for San Bernardino County, CA.

Checked Nov 1, 2026

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Directory results See what each insurance company reports

The 93 Medicare Advantage plans we show for San Bernardino County, CA in 2027

  • 70 list Nicolaas
  • 23 not listed

Alignment Health Plan

13 plans list Nicolaas.

13plans

  • Alignment Health My Choice 001 (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 9525 Monte Vista Ave, Unit 105, Upland, CA, 91786
    • 350 S Euclid Ave, Ste C, Upland, CA, 91786
    • 637 N 13th Ave, Upland, CA, 91786
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763
    • 9655 Monte Vista Ave, Ste 402, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage3.5 starsH3815-001-000Medicare.gov
    $0a month

  • Alignment Health My Choice 050 (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 9525 Monte Vista Ave, Unit 105, Upland, CA, 91786
    • 350 S Euclid Ave, Ste C, Upland, CA, 91786
    • 637 N 13th Ave, Upland, CA, 91786
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763
    • 9655 Monte Vista Ave, Ste 402, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage3.5 starsH3815-050-000Medicare.gov
    $0a month

  • Alignment Health Smart 013 (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Ste C, Upland, CA, 91786
    • 637 N 13th Ave, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763
    • 9655 Monte Vista Ave, Ste 402, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage3.5 starsH3815-013-000Medicare.gov
    $0a month

  • Alignment Health Smart 047 (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Ste C, Upland, CA, 91786
    • 637 N 13th Ave, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763
    • 9655 Monte Vista Ave, Ste 402, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage3.5 starsH3815-047-000Medicare.gov
    $0a month

SCAN Health Plan

9 plans list Nicolaas.

9plans

  • SCAN Classic (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Ste C, Upland, CA, 91786
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763
    • 9525 Monte Vista Ave, Unit 195, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage4 starsH5425-009-000Medicare.gov
    $0a month

  • SCAN Costco Medicare Advantage (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Ste C, Upland, CA, 91786
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763
    • 9525 Monte Vista Ave, Unit 195, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage4 starsH5425-144-000Medicare.gov
    $0a month

  • SCAN Inclusive (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Ste C, Upland, CA, 91786
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763
    • 9525 Monte Vista Ave, Unit 195, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage4 starsH5425-158-000Medicare.gov
    $0a month

  • SCAN Venture (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Ste C, Upland, CA, 91786
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763
    • 9525 Monte Vista Ave, Unit 195, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage4 starsH5425-085-000Medicare.gov
    $0a month

Humana

8 plans list Nicolaas.

8plans

  • Humana Gold Plus Giveback H5619-150 (HMO)

    Source: Humana provider directory.

    Listed offices for this plan:

    • 350 S Euclid Ave, Ste C, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Ste 195, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage4 starsH5619-150-000Medicare.gov
    $0a month

  • Humana Gold Plus H5619-178 (HMO)

    Source: Humana provider directory.

    Listed offices for this plan:

    • 350 S Euclid Ave, Ste C, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Ste 195, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage4 starsH5619-178-000Medicare.gov
    $0a month

  • Humana Gold Plus H5619-191 (HMO)

    Source: Humana provider directory.

    Listed offices for this plan:

    • 350 S Euclid Ave, Ste C, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Ste 195, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage4 starsH5619-191-001Medicare.gov
    $0a month

  • Humana USAA Honor Giveback (HMO)

    Source: Humana provider directory.

    Listed offices for this plan:

    • 350 S Euclid Ave, Ste C, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Ste 195, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMONo drug coverage4 starsH5619-121-000Medicare.gov
    $0a month

UnitedHealthcare

7 plans list Nicolaas.

7plans

  • AARP Medicare Advantage from UHC CA-0015 (HMO-POS)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Upland, CA, 91786
    • 350 S Euclid Ave, Ste C, Upland, CA, 91786

    This result applies to these offices. Other locations are not confirmed.

    HMO-POSDrug coverage3 starsH0543-166-000Medicare.gov
    $0a month

  • AARP Medicare Advantage from UHC CA-006P (HMO-POS)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Upland, CA, 91786
    • 350 S Euclid Ave, Ste C, Upland, CA, 91786

    This result applies to these offices. Other locations are not confirmed.

    HMO-POSDrug coverage3 starsH0543-170-000Medicare.gov
    $0a month

  • AARP Medicare Advantage from UHC CA-022P (HMO-POS)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Upland, CA, 91786
    • 350 S Euclid Ave, Ste C, Upland, CA, 91786

    This result applies to these offices. Other locations are not confirmed.

    HMO-POSDrug coverage3 starsH0543-221-000Medicare.gov
    $0a month

  • AARP Medicare Advantage Giveback from UHC CA-32P (HMO-POS)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Upland, CA, 91786
    • 350 S Euclid Ave, Ste C, Upland, CA, 91786

    This result applies to these offices. Other locations are not confirmed.

    HMO-POSDrug coverage3 starsH0543-238-000Medicare.gov
    $0a month

Aetna Medicare

6 plans list Nicolaas; not listed on 1 other plan.

6plans

  • Aetna Medicare Prime (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Ste C, Upland, CA, 91786

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage3 starsH0523-088-000Medicare.gov
    $0a month

  • Aetna Medicare Prime Extra (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Ste C, Upland, CA, 91786

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage2.5 starsH4982-026-000Medicare.gov
    $0a month

  • Aetna Medicare Prime Value Plus (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Ste C, Upland, CA, 91786

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage2.5 starsH4982-022-000Medicare.gov
    $0a month

  • Aetna Medicare Signature (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Ste C, Upland, CA, 91786

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage2.5 starsH4982-002-000Medicare.gov
    $0a month

Clever Care Health Plan

6 plans list Nicolaas.

6plans

  • Clever Care Longevity (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Ste C, Upland, CA, 91786
    • 637 N 13th Ave, Upland, CA, 91786
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763
    • 9655 Monte Vista Ave, Ste 402, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage4.5 starsH7607-014-000Medicare.gov
    $0a month

  • Clever Care Value (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Ste C, Upland, CA, 91786
    • 637 N 13th Ave, Upland, CA, 91786
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763
    • 9655 Monte Vista Ave, Ste 402, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage4.5 starsH7607-015-000Medicare.gov
    $0a month

  • Clever Care Breathe Select+ (HMO C-SNP)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Ste C, Upland, CA, 91786
    • 637 N 13th Ave, Upland, CA, 91786
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763
    • 9655 Monte Vista Ave, Ste 402, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMOFor people with certain chronic conditionsDrug coverage4.5 starsH7607-019-000Medicare.gov
    $0a month

  • Clever Care Breathe+ (HMO C-SNP)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Ste C, Upland, CA, 91786
    • 637 N 13th Ave, Upland, CA, 91786
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763
    • 9655 Monte Vista Ave, Ste 402, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMOFor people with certain chronic conditionsDrug coverage4.5 starsH7607-017-000Medicare.gov
    $0a month

Astiva Health

5 plans list Nicolaas.

5plans

  • Astiva Health Savings Plan (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 637 N 13th Ave, Upland, CA, 91786
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage4 starsH1993-001-000Medicare.gov
    $0a month

  • Astiva Health C-SNP Bloom (HMO C-SNP)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 637 N 13th Ave, Upland, CA, 91786
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMOFor people with certain chronic conditionsDrug coverage4 starsH1993-020-000Medicare.gov
    $0a month

  • Astiva Health C-SNP Deluxe (HMO C-SNP)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 637 N 13th Ave, Upland, CA, 91786
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMOFor people with certain chronic conditionsDrug coverage4 starsH1993-007-000Medicare.gov
    $0a month

  • Astiva Health C-SNP Fountain (HMO C-SNP)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 637 N 13th Ave, Upland, CA, 91786
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMOFor people with certain chronic conditionsDrug coverage4 starsH1993-019-000Medicare.gov
    $0a month

Imperial Health Plan of California, Inc.

4 plans list Nicolaas.

4plans

  • Imperial Courage Plan (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 637 N 13th Ave, Upland, CA, 91786
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMONo drug coverage4 starsH5496-016-000Medicare.gov
    $0a month

  • Imperial Dynamic Plan (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 637 N 13th Ave, Upland, CA, 91786
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage4 starsH5496-012-000Medicare.gov
    $0a month

  • Imperial Senior Value (HMO C-SNP)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 637 N 13th Ave, Upland, CA, 91786
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMOFor people with certain chronic conditionsDrug coverage4 starsH5496-005-000Medicare.gov
    $0a month

  • Imperial Flex (HMO C-SNP)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 637 N 13th Ave, Upland, CA, 91786
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMOFor people with certain chronic conditionsDrug coverage4 starsH5496-017-000Medicare.gov
    $2.70a month

Wellcare

4 plans list Nicolaas.

4plans

  • Wellcare Simple Focus (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Ste C, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763
    • 9655 Monte Vista Ave, Ste 402, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage3.5 starsH0562-126-000Medicare.gov
    $0a month

  • Wellcare Low Premium (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Ste C, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763
    • 9655 Monte Vista Ave, Ste 402, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage3.5 starsH0562-137-000Medicare.gov
    $47a month

  • Wellcare Health Net Dual Liberty (HMO D-SNP)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Ste C, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763
    • 9655 Monte Vista Ave, Ste 402, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMOFor people with Medicare and MedicaidDrug coverage3.5 starsH3561-009-000Medicare.gov
    $0a month

  • Wellcare Specialty Simple (HMO C-SNP)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Ste C, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763
    • 9655 Monte Vista Ave, Ste 402, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMOFor people with certain chronic conditionsDrug coverage3.5 starsH0562-092-000Medicare.gov
    $0a month

Anthem Blue Cross · Anthem Blue Cross Partnership Plan

2 plans list Nicolaas; not listed on 8 other plans.

2plans

  • Anthem Prime (HMO-POS)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Upland, CA, 91786
    • 999 San Bernardino Rd, Upland, CA, 91786
    • 637 N 13th Ave, Upland, CA, 91786
    • 1113 Alta Ave, Upland, CA, 91786
    • 5000 San Bernardino St, Montclair, CA, 91763
    • 9635 Monte Vista Ave, Montclair, CA, 91763
    • 9525 Monte Vista Ave, Montclair, CA, 91763
    • 9655 Monte Vista Ave, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMO-POSDrug coverage3 starsH4161-002-000Medicare.gov
    $0a month

  • Anthem Select (HMO-POS)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Upland, CA, 91786
    • 999 San Bernardino Rd, Upland, CA, 91786
    • 637 N 13th Ave, Upland, CA, 91786
    • 1113 Alta Ave, Upland, CA, 91786
    • 5000 San Bernardino St, Montclair, CA, 91763
    • 9635 Monte Vista Ave, Montclair, CA, 91763
    • 9525 Monte Vista Ave, Montclair, CA, 91763
    • 9655 Monte Vista Ave, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMO-POSDrug coverage3.5 starsH0544-066-000Medicare.gov
    $0a month

Blue Shield of California

2 plans list Nicolaas.

2plans

  • Blue Shield 65 Plus (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Upland, CA, 91786
    • 350 S Euclid Ave, Ste C, Upland, CA, 91786
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763
    • 9525 Monte Vista Ave, Unit 195, Montclair, CA, 91763
    • 9525 Monte Vista Ave, Montclair, CA, 91763
    • 9655 Monte Vista Ave, Ste 402, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage4 starsH0504-017-000Medicare.gov
    $0a month

  • Blue Shield 65 Plus Choice Plan (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 350 S Euclid Ave, Upland, CA, 91786
    • 350 S Euclid Ave, Ste C, Upland, CA, 91786
    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763
    • 9525 Monte Vista Ave, Unit 195, Montclair, CA, 91763
    • 9525 Monte Vista Ave, Montclair, CA, 91763
    • 9655 Monte Vista Ave, Ste 402, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverage4 starsH0504-040-000Medicare.gov
    $0a month

Elite Health Plan, Inc.

2 plans list Nicolaas.

2plans

  • Elite Core HMO (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 637 N 13th Ave, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverageH6368-002-000Medicare.gov
    $0a month

  • Elite Signature HMO (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 637 N 13th Ave, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMODrug coverageH6368-001-000Medicare.gov
    $0a month

IEHP DualChoice

1 plan lists Nicolaas.

1plan

  • IEHP DualChoice (HMO D-SNP)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 1113 Alta Ave, Ste 220, Upland, CA, 91786
    • 9525 Monte Vista Ave, Unit 105, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMOFor people with Medicare and MedicaidDrug coverage3.5 starsH8894-001-000Medicare.gov
    $7.30a month

Molina Healthcare of California

1 plan lists Nicolaas.

1plan

  • Molina Medicare Complete Care Plus (HMO D-SNP)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 9655 Monte Vista Ave, Ste 402, Montclair, CA, 91763

    This result applies to these offices. Other locations are not confirmed.

    HMOFor people with Medicare and MedicaidDrug coverage3 starsH3038-004-002Medicare.gov
    $7.30a month

Champion Heath Plan

Not listed on its 9 plans here. That isn't proof they're out of network.

Kaiser Permanente

Not listed on its 3 plans here. That isn't proof they're out of network.

VillageHealth

Not listed on its 2 plans here. That isn't proof they're out of network.

Premiums are each plan's own monthly premium, as filed with Medicare. You keep paying your Medicare Part B premium.

Can't find your plan?Tell us the plan you have, and a licensed Silverpath advisor will check whether Nicolaas takes it. Free.

Original Medicare

Original Medicare status

Most Medicare Supplement (Medigap) policies have no provider network: they help pay Original Medicare's cost sharing where Medicare is accepted. Medicare SELECT policies can require network providers for full benefits. Ask the office whether they accept Medicare.

Medicare enrollment and assignment have not been verified here. Advantage directory results do not answer this question.

No opt-out record in this CMS file. CMS's file covers data through 2026-08-31. This does not establish Medicare enrollment, assignment, or whether the office accepts new Medicare patients.

CMS opt-out source · Data through 2026-08-31 · Reviewed Oct 25, 2026

Compare Supplement plans

Where they practice

Practice location

350 S Euclid Ave Ste C
Upland, CA 91786

909-591-6575Directions
NPI Registry
NPI issued
2006
Registry record updated
Nov 16, 2021

Medicare's clinician details aren't available on this page yet.

Questions

Common questions

Which 2027 Medicare Advantage plans list Nicolaas Grobler?

In San Bernardino County, CA, 70 Medicare Advantage plans for 2027 list Nicolaas in provider data from Medicare.gov or the carrier, including Alignment Health My Choice 001 (HMO), Alignment Health My Choice 050 (HMO) and Alignment Health Smart 013 (HMO). CMS matches apply to the covered offices shown with each plan; other offices are not confirmed. Networks can change during the year, so confirm with the office or the plan before you enroll.

Does Nicolaas Grobler take Alignment Health Plan Medicare Advantage plans?

Medicare.gov provider data lists Nicolaas on 13 Medicare Advantage plans for 2027 in San Bernardino County, CA, including Alignment Health My Choice 001 (HMO) and Alignment Health My Choice 050 (HMO). CMS matches apply to the covered offices shown with each plan; other offices are not confirmed. Confirm with the office or Alignment Health Plan before you enroll.

Does Nicolaas Grobler take SCAN Health Plan Medicare Advantage plans?

Medicare.gov provider data lists Nicolaas on 9 Medicare Advantage plans for 2027 in San Bernardino County, CA, including SCAN Classic (HMO) and SCAN Costco Medicare Advantage (HMO). CMS matches apply to the covered offices shown with each plan; other offices are not confirmed. Confirm with the office or SCAN Health Plan before you enroll.

Does Nicolaas Grobler take Humana Medicare Advantage plans?

Humana's own provider directory lists Nicolaas on 8 Medicare Advantage plans for 2027 in San Bernardino County, CA, including Humana Gold Plus Giveback H5619-150 (HMO) and Humana Gold Plus H5619-178 (HMO). Confirm with the office or Humana before you enroll.

Where does Nicolaas Grobler practice?

350 S Euclid Ave Ste C, Upland, CA 91786.

How do I confirm Nicolaas is in my plan's network?

Call the member services number on your plan card and give them the NPI 1720154255, or ask a Silverpath advisor to check for you. It's free.

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A Silverpath advisor can confirm Nicolaas's networks with the carrier and help you compare plans that include them.

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What patients see here today:

  • Provider searches did not return a listing for Nicolaas Grobler on 14 plans from Champion Heath Plan, Kaiser Permanente and VillageHealth in San Bernardino County, CA. Other offices are not confirmed; this isn't proof the practice is out of network.

Tell us which plans you take, or want to take, and we'll keep this page accurate and talk with you about reaching more Medicare patients and carriers.

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Nearby

Moustapha AbidaliGlendora, CA · Listed on 90 plansJoseph GordonPomona, CA · Listed on 85 plansBernard KimLos Angeles, CA · Listed on 84 plansHeather DavisClaremont, CA · Listed on 84 plansNadir EltahirPomona, CA · Listed on 83 plansSucha KimLos Angeles, CA · Listed on 83 plansAnthony GanPomona, CA · Listed on 81 plansJooby BabuSanta Ana, CA · Listed on 80 plans

See all internal medicine, pulmonary disease providers in CA

Sources. Name, specialty and locations: the CMS NPI Registry (record updated 2021-11-16). Plan networks: carrier provider directories and Medicare.gov provider data, checked Nov 1, 2026. CMS matches apply to the covered offices shown with each plan. Plans: CMS 2027 Medicare Advantage landscape.

Networks change during the year, and a directory can be out of date. Confirm with the provider's office and the plan before you enroll or schedule care.

Silverpath is a licensed insurance agency. This page isn't affiliated with or endorsed by Nicolaas Grobler or their practice. Not connected with or endorsed by the U.S. government or the federal Medicare program.

We do not offer every plan available in your area. Please contact Medicare.gov or 1-800-MEDICARE to get information on all of your options.

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