Provider profile

Katharine HarperMD

Orthopaedic Surgery, Adult Reconstructive Orthopaedic Surgery

NPI 1417399288
18101 Prince Philip Dr, Olney, MD 20832301-774-8958

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Medicare Advantage plans for Montgomery County, MD.

Checked Oct 25, 2026

Use the name or plan ID on your member card, or choose your insurance company.

Directory results See what each insurance company reports

The 27 Medicare Advantage plans we show for Montgomery County, MD in 2027

  • 9 list Katharine
  • 18 not listed

CareFirst BlueCross BlueShield Advantage DualPrime · CareFirst BlueCross BlueShield Medicare Advantage

4 plans list Katharine; not listed on 1 other plan.

4plans
  • CareFirst BlueCross BlueShield Advantage Essential (PPO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 18109 Prince Philip Dr, Ste 325, Olney, MD, 20832
    • 3305 N Leisure World Blvd, Silver Spring, MD, 20906
    • 1133 21st St NW, Bldg 2, Washington, DC, 20036

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

    PPODrug coverage2.5 starsH7379-001-000Medicare.gov
    $0a month
  • CareFirst BlueCross BlueShield Advantage Salute (PPO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 18109 Prince Philip Dr, Ste 325, Olney, MD, 20832
    • 3305 N Leisure World Blvd, Silver Spring, MD, 20906
    • 1133 21st St NW, Bldg 2, Washington, DC, 20036

    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 Complete (PPO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 18109 Prince Philip Dr, Ste 325, Olney, MD, 20832
    • 3305 N Leisure World Blvd, Silver Spring, MD, 20906
    • 1133 21st St NW, Bldg 2, Washington, DC, 20036

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

    PPODrug coverage2.5 starsH7379-002-000Medicare.gov
    $45a month
  • CareFirst BlueCross BlueShield Advantage Signature (PPO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 18109 Prince Philip Dr, Ste 325, Olney, MD, 20832
    • 3305 N Leisure World Blvd, Silver Spring, MD, 20906
    • 1133 21st St NW, Bldg 2, Washington, DC, 20036

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

    PPODrug coverage2.5 starsH7379-004-001Medicare.gov
    $47a month

Humana

4 plans list Katharine.

4plans
  • Humana USAA Honor Giveback (PPO)

    Source: Humana provider directory.

    Listed offices for this plan:

    • 6710A Rockledge Dr, Ste 350, Bethesda, MD, 20817
    • 3305 N Leisure World Blvd, Silver Spring, MD, 20906
    • 1133 21st St NW, Bldg 2 Fl 10, Washington, DC, 20036

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

    PPONo drug coverage4 starsH5216-379-000Medicare.gov
    $0a month
  • HumanaChoice H5216-376 (PPO)

    Source: Humana provider directory.

    Listed offices for this plan:

    • 6710A Rockledge Dr, Ste 350, Bethesda, MD, 20817
    • 3305 N Leisure World Blvd, Silver Spring, MD, 20906
    • 1133 21st St NW, Bldg 2 Fl 10, Washington, DC, 20036

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

    PPODrug coverage4 starsH5216-376-000Medicare.gov
    $0a month
  • HumanaChoice H7617-044 (PPO)

    Source: Humana provider directory.

    Listed offices for this plan:

    • 6710A Rockledge Dr, Ste 350, Bethesda, MD, 20817
    • 3305 N Leisure World Blvd, Silver Spring, MD, 20906
    • 1133 21st St NW, Bldg 2 Fl 10, Washington, DC, 20036

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

    PPODrug coverage4.5 starsH7617-044-000Medicare.gov
    $0a month
  • HumanaChoice H5216-387 (PPO)

    Source: Humana provider directory.

    Listed offices for this plan:

    • 6710A Rockledge Dr, Ste 350, Bethesda, MD, 20817
    • 3305 N Leisure World Blvd, Silver Spring, MD, 20906
    • 1133 21st St NW, Bldg 2 Fl 10, Washington, DC, 20036

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

    PPODrug coverage4 starsH5216-387-001Medicare.gov
    $73a month

UnitedHealthcare

1 plan lists Katharine.

1plan
  • UHC Dual Complete MD-S002 (HMO D-SNP)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 18109 Prince Philip Dr, Ste 325, Olney, MD, 20832
    • 18109 Prince Philip Dr, Olney, MD, 20832
    • 3305 N Leisure World Blvd, Silver Spring, MD, 20906

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

    HMOFor people with Medicare and MedicaidDrug coverage3 starsH7464-008-001Medicare.gov
    $0a month

Alterwood Advantage

Not listed on its 5 plans here. That isn't proof they're out of network.

Johns Hopkins Advantage MD

Not listed on its 5 plans here. That isn't proof they're out of network.

Kaiser Permanente

Not listed on its 7 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 Katharine takes it. Free.

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

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Practice location

18101 Prince Philip Dr
Olney, MD 20832

NPI Registry
NPI issued
2013
Registry record updated
Jan 8, 2026

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

Common questions

Which 2027 Medicare Advantage plans list Katharine Harper?

In Montgomery County, MD, 9 Medicare Advantage plans for 2027 list Katharine in provider data from Medicare.gov or the carrier, including CareFirst BlueCross BlueShield Advantage Essential (PPO), CareFirst BlueCross BlueShield Advantage Salute (PPO) and CareFirst BlueCross BlueShield Advantage Complete (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 Katharine Harper take CareFirst BlueCross BlueShield Advantage DualPrime Medicare Advantage plans?

Medicare.gov provider data lists Katharine on 4 Medicare Advantage plans for 2027 in Montgomery County, MD, including CareFirst BlueCross BlueShield Advantage Essential (PPO) and CareFirst BlueCross BlueShield Advantage Salute (PPO). 1 other plan did not return a listing in the search area. CMS matches apply to the covered offices shown with each plan; other offices are not confirmed. Confirm with the office or CareFirst BlueCross BlueShield Advantage DualPrime before you enroll.

Does Katharine Harper take Humana Medicare Advantage plans?

Humana's own provider directory lists Katharine on 4 Medicare Advantage plans for 2027 in Montgomery County, MD, including Humana USAA Honor Giveback (PPO) and HumanaChoice H5216-376 (PPO). Confirm with the office or Humana before you enroll.

Does Katharine Harper take UnitedHealthcare Medicare Advantage plans?

Medicare.gov provider data lists Katharine on one Medicare Advantage plan for 2027 in Montgomery County, MD: UHC Dual Complete MD-S002 (HMO D-SNP). CMS matches apply to the covered offices shown with each plan; other offices are not confirmed. Confirm with the office or UnitedHealthcare before you enroll.

Where does Katharine Harper practice?

18101 Prince Philip Dr, Olney, MD 20832.

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

Call the member services number on your plan card and give them the NPI 1417399288, or ask a Silverpath advisor to check for you. It's free.

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For providers

Is this your practice?

What patients see here today:

  • Provider searches did not return a listing for Katharine Harper on 17 plans from Alterwood Advantage, Johns Hopkins Advantage MD and Kaiser Permanente in Montgomery County, MD. 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.

Sources. Name, specialty and locations: the CMS NPI Registry (record updated 2026-01-08). Plan networks: carrier provider directories and Medicare.gov provider data, checked Oct 25, 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 Katharine Harper 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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