Provider profile

Joshua CosekPA-C

Physician Assistant

4 locationsNPI 1871226837
300 Pasteur Dr, Stanford, CA 94305650-723-4000

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Medicare Advantage plans for Santa Clara County, CA, Berrien County, MI and San Francisco County, CA.

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 4 plans so far

Some of Imperial Health Plan of California, Inc., Aetna Medicare, Alignment Health Plan, Anthem Blue Cross, Astiva Health, Blue Care Network, Blue Shield of California, CCHP (Chinese Community Health Plan), Health Alliance Plan by Henry Ford Health, Humana, Kaiser Permanente, McLaren Medicare, Priority Health Medicare, San Francisco Health Plan, Santa Clara Family Health Plan, SCAN Health Plan, UnitedHealthcare and Wellcare's 2027 plans in Santa Clara County, CA, Berrien County, MI and San Francisco County, CA haven't been checked yet.

The 110 Medicare Advantage plans we show for Santa Clara County, CA, Berrien County, MI and San Francisco County, CA in 2027

  • 4 list Joshua
  • 30 not listed
  • 76 not checked yet

Imperial Health Plan of California, Inc.

4 plans list Joshua.

4plans
  • Imperial Courage Plan (HMO)

    Source: Medicare.gov provider data.

    Listed offices for this plan:

    • 505 Parnassus Ave, Ste M917, San Francisco, CA, 94143

    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:

    • 505 Parnassus Ave, Ste M917, San Francisco, CA, 94143

    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:

    • 505 Parnassus Ave, Ste M917, San Francisco, CA, 94143

    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:

    • 505 Parnassus Ave, Ste M917, San Francisco, CA, 94143

    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

Aetna Medicare · Aetna Medicare HIDE

Not checked yet.

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

Alignment Health Plan

Not checked yet.

3 more Alignment Health Plan plans haven't been checked yet.

Anthem Blue Cross · Anthem Blue Cross Partnership Plan

Not checked yet.

2 more Anthem Blue Cross plans haven't been checked yet.

Astiva Health

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

Blue Care Network

Not checked yet.

Blue Shield of California · Blue Cross Blue Shield of Michigan

Not checked yet.

7 more Blue Shield of California plans haven't been checked yet.

CCHP (Chinese Community Health Plan)

Not checked yet.

Health Alliance Plan by Henry Ford Health

Not checked yet.

Humana

Not checked yet.

Kaiser Permanente

Not checked yet.

3 more Kaiser Permanente plans haven't been checked yet.

McLaren Medicare

Not checked yet.

Priority Health Medicare

Not checked yet.

San Francisco Health Plan

Not checked yet.

Santa Clara Family Health Plan

Not listed on its 1 plan here. That isn't proof they're out of network.

SCAN Health Plan

Not checked yet.

6 more SCAN Health Plan plans haven't been checked yet.

UnitedHealthcare

Not checked yet.

Wellcare

Not checked yet.

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 Joshua 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 22, 2026

Compare Supplement plans

4 practice locations

300 Pasteur Dr
Stanford, CA 94305

NPI Registry

1234 Napier Ave
Saint Joseph, MI 49085

NPI Registry

505 Parnassus Ave Ste M917
San Francisco, CA 94143

NPI Registry

4700 Bahama Ln
Portage, MI 49002

NPI Registry
NPI issued
2022
Registry record updated
Jun 10, 2026

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

Common questions

Which 2027 Medicare Advantage plans list Joshua Cosek?

In Santa Clara County, CA, Berrien County, MI and San Francisco County, CA, 4 Medicare Advantage plans for 2027 list Joshua in provider data from Medicare.gov or the carrier, including Imperial Courage Plan (HMO), Imperial Dynamic Plan (HMO) and Imperial Senior Value (HMO C-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 Joshua Cosek practice?

4 locations, including 300 Pasteur Dr, Stanford, CA. All of them are listed on this page.

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

Call the member services number on your plan card and give them the NPI 1871226837, or ask a Silverpath advisor to check for you. It's free.

Free · No obligation

Talk to a licensed advisor

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

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For providers

Is this your practice?

Patients can use Silverpath to find practices and check plan networks in Santa Clara County, CA, Berrien County, MI and San Francisco County, CA. 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 2026-06-10). Plan networks: carrier provider directories and Medicare.gov provider data, checked Oct 13, 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 Joshua Cosek 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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Does Joshua take my plan?