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Physician Profile

William L. Morfeld, M.D.

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At a glance

About Dr. Morfeld

William L. Morfeld, M.D. practices internal medicine in Clayton, CA. The provider's National Provider Identifier (NPI) is 1306145107.

Factual summary compiled by Guide.md from public records; not written by this provider.

Specialty

Internal Medicine (Primary)

Credentials & Licensing

CA · Physician and Surgeon GMedical Board of California
No. 8192DelinquentExpired Aug 31, 2026Since 1962
NPINational Provider Identifier
1306145107Issued 2011

Snapshot · verify with the board ↗

Medicare information

Medicare opt-outNo
Can order and refer in MedicareYes

Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.

Common questions

What does William L. Morfeld specialize in?

William L. Morfeld is an internist in Clayton, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.

NPI registry

Where is William L. Morfeld located?

William L. Morfeld is listed at 5922 Wallace Dr, Clayton, CA 94517. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

What is William L. Morfeld's phone number?

The number on file is (925) 672-5123. Contact the office directly to confirm availability and scheduling.

NPI registry

What is the NPI for William L. Morfeld?

William L. Morfeld's National Provider Identifier is 1306145107. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.

NPI registry

How much experience does William L. Morfeld have?

William L. Morfeld has 15+ years experience. Registered with an NPI since 2011. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.

NPI registry

Is William L. Morfeld's profile verified?

Not yet. This profile is built from public federal data and has not been confirmed by William L. Morfeld. If this is you, claiming it is free.

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