Marin MarcuMD
Internal Medicine, Gastroenterology
2027 Medicare Advantage
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Medicare Advantage plans for St. Charles County, MO.
Use the name or plan ID on your member card, or choose your insurance company.
Directory results See what each insurance company reports
The 72 Medicare Advantage plans we show for St. Charles County, MO in 2027
- 38 list Marin
- 34 not listed
Aetna Medicare
13 plans list Marin.
Aetna Medicare Eagle (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 400 1st Capitol Dr, Ste 201, Saint Charles, MO, 63301
- 400 1st Capitol Dr, Fl 2, Saint Charles, MO, 63301
- 300 Medical Plz, Ste 310, Lake Saint Louis, MO, 63367
This result applies to these offices. Other locations are not confirmed.
$0a monthAetna Medicare Elite (PPO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 400 1st Capitol Dr, Ste 201, Saint Charles, MO, 63301
- 400 1st Capitol Dr, Fl 2, Saint Charles, MO, 63301
- 300 Medical Plz, Ste 310, Lake Saint Louis, MO, 63367
This result applies to these offices. Other locations are not confirmed.
$0a monthAetna Medicare Elite Classic (PPO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 400 1st Capitol Dr, Ste 201, Saint Charles, MO, 63301
- 400 1st Capitol Dr, Fl 2, Saint Charles, MO, 63301
- 300 Medical Plz, Ste 310, Lake Saint Louis, MO, 63367
This result applies to these offices. Other locations are not confirmed.
$0a monthAetna Medicare Elite Classic Extra (PPO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 400 1st Capitol Dr, Ste 201, Saint Charles, MO, 63301
- 400 1st Capitol Dr, Fl 2, Saint Charles, MO, 63301
- 300 Medical Plz, Ste 310, Lake Saint Louis, MO, 63367
This result applies to these offices. Other locations are not confirmed.
$0a month
Humana
9 plans list Marin; not listed on 9 other plans.
Humana Essentials Plus Giveback (HMO)
Source: Humana provider directory.
Listed offices for this plan:
- 400 1st Capitol Dr, Ste 201, Saint Charles, MO, 63301
- 300 Medical Plz, Ste 310, Lake Saint Louis, MO, 63367
This result applies to these offices. Other locations are not confirmed.
$0a monthHumana Essentials Plus Giveback (HMO)
Source: Humana provider directory.
Listed offices for this plan:
- 400 1st Capitol Dr, Ste 201, Saint Charles, MO, 63301
- 300 Medical Plz, Ste 310, Lake Saint Louis, MO, 63367
This result applies to these offices. Other locations are not confirmed.
$0a monthHumana Gold Choice H8145-126 (PFFS)
Source: Humana provider directory.
The source lists the clinician on this plan, but hasn't identified a covered office. Confirm your office before enrolling.
$0a monthHumana Total Complete (HMO)
Source: Humana provider directory.
Listed offices for this plan:
- 400 1st Capitol Dr, Ste 201, Saint Charles, MO, 63301
- 300 Medical Plz, Ste 310, Lake Saint Louis, MO, 63367
This result applies to these offices. Other locations are not confirmed.
$0a month
Wellcare
6 plans list Marin.
Wellcare Patriot Giveback Open (PPO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 400 1st Capitol Dr, Ste 201, Saint Charles, MO, 63301
This result applies to these offices. Other locations are not confirmed.
$0a monthWellcare Simple (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 400 1st Capitol Dr, Ste 201, Saint Charles, MO, 63301
This result applies to these offices. Other locations are not confirmed.
$0a monthWellcare Simple Open (PPO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 400 1st Capitol Dr, Ste 201, Saint Charles, MO, 63301
This result applies to these offices. Other locations are not confirmed.
$0a monthWellcare Home State Health Dual Access (HMO-POS D-SNP)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 400 1st Capitol Dr, Ste 201, Saint Charles, MO, 63301
This result applies to these offices. Other locations are not confirmed.
$0a month
Anthem Blue Cross and Blue Shield · Anthem HealthKeepers
5 plans list Marin.
Anthem Medicare Advantage (HMO-POS)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 400 1st Capitol Dr, Saint Charles, MO, 63301
This result applies to these offices. Other locations are not confirmed.
$0a monthAnthem Veteran (PPO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 400 1st Capitol Dr, Saint Charles, MO, 63301
This result applies to these offices. Other locations are not confirmed.
$0a monthAnthem Chronic Care (HMO-POS C-SNP)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 400 1st Capitol Dr, Saint Charles, MO, 63301
This result applies to these offices. Other locations are not confirmed.
$0a monthAnthem Full Dual Advantage (HMO D-SNP)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 400 1st Capitol Dr, Saint Charles, MO, 63301
This result applies to these offices. Other locations are not confirmed.
$0a month
HealthSpring
5 plans list Marin.
HealthSpring Preferred (HMO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 400 1st Capitol Dr, Ste 201, Saint Charles, MO, 63301
- 300 Medical Plz, Ste 310, Lake St Louis, MO, 63367
This result applies to these offices. Other locations are not confirmed.
$0a monthHealthSpring Preferred Savings (HMO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 400 1st Capitol Dr, Ste 201, Saint Charles, MO, 63301
- 300 Medical Plz, Ste 310, Lake St Louis, MO, 63367
This result applies to these offices. Other locations are not confirmed.
$0a monthHealthSpring True Choice (PPO)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 400 1st Capitol Dr, Ste 201, Saint Charles, MO, 63301
- 300 Medical Plz, Ste 310, Lake St Louis, MO, 63367
This result applies to these offices. Other locations are not confirmed.
$6a monthHealthSpring TotalCare (HMO D-SNP)
Source: Medicare.gov provider data.
Listed offices for this plan:
- 400 1st Capitol Dr, Ste 201, Saint Charles, MO, 63301
- 300 Medical Plz, Ste 310, Lake St Louis, MO, 63367
This result applies to these offices. Other locations are not confirmed.
$18.40a month
Devoted
Not listed on its 9 plans here. That isn't proof they're out of network.
Essence Healthcare
Not listed on its 5 plans here. That isn't proof they're out of network.
UnitedHealthcare
Not listed on its 11 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 Marin 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
Practice location
- NPI issued
- 2006
- Registry record updated
- Nov 20, 2020
Medicare's clinician details aren't available on this page yet.
Questions
Common questions
Which 2027 Medicare Advantage plans list Marin Marcu?
In St. Charles County, MO, 38 Medicare Advantage plans for 2027 list Marin in provider data from Medicare.gov or the carrier, including Aetna Medicare Eagle (HMO-POS), Aetna Medicare Elite (PPO) and Aetna Medicare Elite Classic (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.
Does Marin Marcu take Aetna Medicare Medicare Advantage plans?
Medicare.gov provider data lists Marin on 13 Medicare Advantage plans for 2027 in St. Charles County, MO, including Aetna Medicare Eagle (HMO-POS) and Aetna Medicare Elite (PPO). CMS matches apply to the covered offices shown with each plan; other offices are not confirmed. Confirm with the office or Aetna Medicare before you enroll.
Does Marin Marcu take Humana Medicare Advantage plans?
Humana's own provider directory lists Marin on 9 Medicare Advantage plans for 2027 in St. Charles County, MO, including Humana Essentials Plus Giveback (HMO). 9 other plans did not return a listing in the search area. Confirm with the office or Humana before you enroll.
Does Marin Marcu take Wellcare Medicare Advantage plans?
Medicare.gov provider data lists Marin on 6 Medicare Advantage plans for 2027 in St. Charles County, MO, including Wellcare Patriot Giveback Open (PPO) and Wellcare Simple (HMO-POS). CMS matches apply to the covered offices shown with each plan; other offices are not confirmed. Confirm with the office or Wellcare before you enroll.
Where does Marin Marcu practice?
400 1st Capitol Dr, Suite 201, Saint Charles, MO 63301.
How do I confirm Marin is in my plan's network?
Call the member services number on your plan card and give them the NPI 1295795722, or ask a Silverpath advisor to check for you. It's free.
For providers
Is this your practice?
What patients see here today:
- Provider searches did not return a listing for Marin Marcu on 25 plans from Devoted, Essence Healthcare and UnitedHealthcare in St. Charles County, MO. 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.