Elizabeth CastilloMD PHD
Internal Medicine, Geriatric Medicine
2027 Medicare Advantage
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Medicare Advantage plans for Suffolk and Barnstable counties, MA.
Use the name or plan ID on your member card, or choose your insurance company.
Directory results See what each insurance company reports
Listed on 10 plans so far
Some of Blue Cross Blue Shield of Massachusetts, Aetna Medicare, Commonwealth Care Alliance Massachusetts, Commonwealth Care Alliance, Inc., eternalHealth, Fallon Health, Humana, Mass General Brigham Health Plan, Molina Healthcare of Massachusetts, Tufts Health Plan and UnitedHealthcare's 2027 plans in Suffolk and Barnstable counties, MA haven't been checked yet.
The 58 Medicare Advantage plans we show for Suffolk and Barnstable counties, MA in 2027
- 10 list Elizabeth
- 37 not listed
- 11 not checked yet
Blue Cross Blue Shield of Massachusetts
7 plans list Elizabeth.
Medicare HMO Blue SaverRx (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 311 Service Rd, East Sandwich, MA, 02537
This result applies to these offices. Other locations are not confirmed.
$0a monthMedicare HMO Blue ValueRx (HMO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 311 Service Rd, East Sandwich, MA, 02537
This result applies to these offices. Other locations are not confirmed.
$68a monthMedicare PPO Blue EssentialRx (PPO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 311 Service Rd, East Sandwich, MA, 02537
This result applies to these offices. Other locations are not confirmed.
$69a monthMedicare PPO Blue ValueRx (PPO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 311 Service Rd, East Sandwich, MA, 02537
This result applies to these offices. Other locations are not confirmed.
$108a month
Aetna Medicare
1 plan lists Elizabeth.
Aetna Medicare Signature (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 57 Portland St, Ste 2A, South Berwick, ME, 03908
This result applies to these offices. Other locations are not confirmed.
$0a month
Commonwealth Care Alliance Massachusetts
1 plan lists Elizabeth.
CCA Senior Care Options (HMO D-SNP)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 311 Service Rd, East Sandwich, MA, 02537
This result applies to these offices. Other locations are not confirmed.
$33.80a month
Commonwealth Care Alliance, Inc.
1 plan lists Elizabeth.
CCA One Care (HMO D-SNP)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 311 Service Rd, East Sandwich, MA, 02537
This result applies to these offices. Other locations are not confirmed.
$33.80a month
eternalHealth
Not checked yet.
Fallon Health
Not checked yet.
1 more Fallon Health plan hasn't been checked yet.
Humana
Not listed on its 2 plans here. That isn't proof they're out of network.
Mass General Brigham Health Plan
Not listed on its 5 plans here. That isn't proof they're out of network.
Molina Healthcare of Massachusetts
Not listed on its 3 plans here. That isn't proof they're out of network.
Tufts Health Plan
Not checked yet.
7 more Tufts Health Plan plans haven't been checked yet.
UnitedHealthcare
Not listed on its 8 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 Elizabeth 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
Where they practice
2 practice locations
- NPI issued
- 2006
- Registry record updated
- Feb 9, 2026
Medicare's clinician details aren't available on this page yet.
Questions
Common questions
Which 2027 Medicare Advantage plans list Elizabeth Castillo?
In Suffolk and Barnstable counties, MA, 10 Medicare Advantage plans for 2027 list Elizabeth in provider data from Medicare.gov or the carrier, including Medicare HMO Blue SaverRx (HMO-POS), Medicare HMO Blue ValueRx (HMO) and Medicare PPO Blue EssentialRx (PPO). 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.
Where does Elizabeth Castillo practice?
2 locations, including 55 Fruit St, Boston, MA. All of them are listed on this page.
How do I confirm Elizabeth is in my plan's network?
Call the member services number on your plan card and give them the NPI 1932176443, or ask a Silverpath advisor to check for you. It's free.
For providers
Is this your practice?
Patients can use Silverpath to find practices and check plan networks in Suffolk and Barnstable counties, MA. 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.