Provider profile

William ParkMD

Internal Medicine, Gastroenterology

3 locationsNPI 1710446026
1133 21st St NW Building 2, 5th Floor, Washington, DC 20036202-416-2000

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Medicare Advantage plans for District of Columbia County, DC, Suffolk County, MA and Providence County, RI.

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Directory results See what each insurance company reports

Listed on 10 plans so far

Some of UnitedHealthcare, Aetna Medicare, CareFirst BlueCross BlueShield Medicare Advantage, Humana, Commonwealth Care Alliance Massachusetts, Commonwealth Care Alliance, Inc., eternalHealth, Fallon Health, Kaiser Permanente, Mass General Brigham Health Plan, Molina Healthcare of Massachusetts, Neighborhood Health Plan of Rhode Island and Tufts Health Plan's 2027 plans in District of Columbia County, DC, Suffolk County, MA and Providence County, RI haven't been checked yet.

The 85 Medicare Advantage plans we show for District of Columbia County, DC, Suffolk County, MA and Providence County, RI in 2027

  • 10 list William
  • 4 not listed
  • 71 not checked yet

UnitedHealthcare

4 plans list William.

4plans
  • AARP Medicare Advantage from UHC DC-0002 (PPO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 1133 21st St NW, Bldg 2, Washington, DC, 20036
    • 8401 Connecticut Ave, Chevy Chase, MD, 20815
    • 8401 Connecticut Ave, Ph, Chevy Chase, MD, 20815

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

    PPODrug coverage4 starsH2406-082-000Medicare.gov
    $72a month
  • UHC Dual Choice DC-Q001 (PPO D-SNP)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 1133 21st St NW, Bldg 2, Washington, DC, 20036
    • 8401 Connecticut Ave, Chevy Chase, MD, 20815
    • 8401 Connecticut Ave, Ph, Chevy Chase, MD, 20815

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

    PPOFor people with Medicare and MedicaidDrug coverage4 starsH2406-099-000Medicare.gov
    $0a month
  • UHC Dual Choice DC-Y2 (PPO D-SNP)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 1133 21st St NW, Bldg 2, Washington, DC, 20036
    • 8401 Connecticut Ave, Chevy Chase, MD, 20815
    • 8401 Connecticut Ave, Ph, Chevy Chase, MD, 20815

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

    PPOFor people with Medicare and MedicaidDrug coverage4 starsH2406-053-000Medicare.gov
    $0a month
  • UHC Dual Choice DC-YL1 (HMO D-SNP)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 1133 21st St NW, Bldg 2, Washington, DC, 20036
    • 8401 Connecticut Ave, Chevy Chase, MD, 20815
    • 8401 Connecticut Ave, Ph, Chevy Chase, MD, 20815

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

    HMOFor people with Medicare and MedicaidDrug coverage3 starsH7464-010-000Medicare.gov
    $0a month

17 more UnitedHealthcare plans haven't been checked yet.

Aetna Medicare

3 plans list William.

3plans
  • Aetna Medicare Eagle Giveback (PPO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 1133 21st St NW, Bldg 2, Washington, DC, 20036
    • 3800 Reservoir Rd NW, Fl 2, Washington, DC, 20007
    • 8401 Connecticut Ave, Chevy Chase, MD, 20815

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

    PPONo drug coverage4 starsH5521-322-000Medicare.gov
    $0a month
  • Aetna Medicare Enhanced Plus (HMO-POS)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 1133 21st St NW, Bldg 2, Washington, DC, 20036
    • 3800 Reservoir Rd NW, Fl 2, Washington, DC, 20007
    • 8401 Connecticut Ave, Chevy Chase, MD, 20815

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

    HMO-POSDrug coverage3.5 starsH3931-095-000Medicare.gov
    $48a month
  • Aetna Medicare Premier (PPO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 1133 21st St NW, Bldg 2, Washington, DC, 20036
    • 3800 Reservoir Rd NW, Fl 2, Washington, DC, 20007
    • 8401 Connecticut Ave, Chevy Chase, MD, 20815

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

    PPODrug coverage4 starsH5521-015-000Medicare.gov
    $68a month

5 more Aetna Medicare plans haven't been checked yet.

CareFirst BlueCross BlueShield Medicare Advantage · Blue Cross Blue Shield of Massachusetts · Blue Cross & Blue Shield of Rhode Island

2 plans list William.

2plans
  • CareFirst BlueCross BlueShield Advantage Salute (PPO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 1133 21st St NW, Bldg 2, Washington, DC, 20036
    • 3800 Reservoir Rd NW, Bldg 2ND, Washington, DC, 20007
    • 8401 Connecticut Ave, Ph -B, Chevy Chase, MD, 20815

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

    PPONo drug coverage2.5 starsH7379-003-000Medicare.gov
    $0a month
  • CareFirst BlueCross BlueShield Advantage Signature (PPO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 1133 21st St NW, Bldg 2, Washington, DC, 20036
    • 3800 Reservoir Rd NW, Bldg 2ND, Washington, DC, 20007
    • 8401 Connecticut Ave, Ph -B, Chevy Chase, MD, 20815

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

    PPODrug coverage2.5 starsH7379-004-002Medicare.gov
    $58a month

13 more CareFirst BlueCross BlueShield Medicare Advantage plans haven't been checked yet.

Humana

1 plan lists William.

1plan
  • HumanaChoice H5216-383 (PPO)

    Source: Humana provider directory.

    Listed offices for this plan:

    • 1133 21st St NW, Bldg 2 Fl 6, Washington, DC, 20036
    • 8401 Connecticut Ave, Ph - B, Bethesda, MD, 20815
    • 18111 Prince Philip Dr, Ste 124, Olney, MD, 20832

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

    PPODrug coverage4 starsH5216-383-000Medicare.gov
    $0a month

2 more Humana plans haven't been checked yet.

Commonwealth Care Alliance Massachusetts

Not checked yet.

Commonwealth Care Alliance, Inc.

Not checked yet.

eternalHealth

Not checked yet.

Fallon Health

Not checked yet.

Kaiser Permanente

Not listed on its 4 plans here. That isn't proof they're out of network.

Mass General Brigham Health Plan

Not checked yet.

Molina Healthcare of Massachusetts

Not checked yet.

Neighborhood Health Plan of Rhode Island

Not checked yet.

Tufts Health Plan

Not checked yet.

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

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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

3 practice locations

1133 21st St NW Building 2, 5th Floor
Washington, DC 20036

NPI Registry

811 Massachusetts Ave
Boston, MA 02118

NPI Registry

593 Eddy St Ste 240
Providence, RI 02903

NPI Registry
NPI issued
2019
Registry record updated
Aug 7, 2025

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

Common questions

Which 2027 Medicare Advantage plans list William Park?

In District of Columbia County, DC, Suffolk County, MA and Providence County, RI, 10 Medicare Advantage plans for 2027 list William in provider data from Medicare.gov or the carrier, including AARP Medicare Advantage from UHC DC-0002 (PPO), UHC Dual Choice DC-Q001 (PPO D-SNP) and UHC Dual Choice DC-Y2 (PPO D-SNP). 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 William Park practice?

3 locations, including 1133 21st St NW Building 2, Washington, DC. All of them are listed on this page.

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

Call the member services number on your plan card and give them the NPI 1710446026, or ask a Silverpath advisor to check for you. It's free.

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

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Is this your practice?

Patients can use Silverpath to find practices and check plan networks in District of Columbia County, DC, Suffolk County, MA and Providence County, RI. 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.

Sources. Name, specialty and locations: the CMS NPI Registry (record updated 2025-08-07). 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 William Park or their practice. Not connected with or endorsed by the U.S. government or the federal Medicare program.

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