Provider profile

Zachary BosshardtMD

Psychiatry & Neurology, Psychiatry

2 locationsNPI 1659900264
2500 Alhambra Ave, Martinez, CA 94553925-370-5000

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We haven't asked Aetna Medicare, Anthem Blue Cross and Blue Shield, Clover Health, Contra Costa Health Care Plus (HMO D-SNP), Devoted, HealthSpring, Humana, Imperial Health Plan of California, Inc., Kaiser Permanente, PruittHealth Premier, UnitedHealthcare and Wellcare's directories about Zachary yet. A Silverpath advisor can check for you now.

The 98 Medicare Advantage plans we show for Contra Costa County, CA and DeKalb County, GA in 2027

  • 10 not listed
  • 88 not checked yet

Aetna Medicare

Not checked yet.

Anthem Blue Cross and Blue Shield

Not checked yet.

Clover Health

Not checked yet.

Contra Costa Health Care Plus (HMO D-SNP)

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

Devoted

Not checked yet.

HealthSpring

Not checked yet.

Humana

Not checked yet.

27 more Humana plans haven't been checked yet.

Imperial Health Plan of California, Inc.

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

Kaiser Permanente

Not checked yet.

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

PruittHealth Premier

Not checked yet.

UnitedHealthcare

Not checked yet.

8 more UnitedHealthcare plans haven't been 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.

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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 21, 2026

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2 practice locations

2500 Alhambra Ave
Martinez, CA 94553

NPI Registry

1364 Clifton Rd NE
Atlanta, GA 30322

NPI Registry
NPI issued
2020
Registry record updated
Jul 30, 2025

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

Common questions

Where does Zachary Bosshardt practice?

2 locations, including 2500 Alhambra Ave, Martinez, CA. All of them are listed on this page.

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

Call the member services number on your plan card and give them the NPI 1659900264, or ask a Silverpath advisor to check for you. It's free.

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A Silverpath advisor can confirm Zachary'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 Contra Costa County, CA and DeKalb County, GA. 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 2025-07-30). 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 Zachary Bosshardt 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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