Are you John R. Christensen, M.D.? This profile is yours to edit: update your address, phone, photo and services.

Edit this profile

Physician Profile

John R. Christensen, M.D.

Is this you? Edit this profile

At a glance

About Dr. Christensen

John R. Christensen, M.D. practices internal medicine in Oakland, CA. The provider's National Provider Identifier (NPI) is 1689646556.

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. 39869DelinquentExpired Sep 30, 2026Since 1979
NPINational Provider Identifier
1689646556Issued 2006

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 kind of doctor is John R. Christensen?

John R. Christensen is an internist in Oakland, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.

NPI registry

What is John R. Christensen's address?

John R. Christensen is listed at 10700 Macarthur Blvd Ste 14 B, Oakland, CA 94605. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

How can I make an appointment with John R. Christensen?

The number on file is (510) 563-4300. Contact the office directly to confirm availability and scheduling.

NPI registry

What is John R. Christensen's NPI number?

John R. Christensen's National Provider Identifier is 1689646556. 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 long has John R. Christensen been practicing?

John R. Christensen has 20+ years experience. Registered with an NPI since 2006. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.

NPI registry

Has John R. Christensen confirmed this information?

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

Guide.md

Guide.md listings do not constitute medical advice or an endorsement.