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Physician Profile

John Feng, MD

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Where to find John Feng, MD

About Dr. Feng

John Feng, MD is a healthcare provider in Santa Ana, CA specializing in internal medicine. This provider record is associated with NPI 1346660081.

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

Specialty

Internal Medicine (Primary)

Credentials & Licensing

CA · Physician and Surgeon AMedical Board of California
No. 139812CurrentExpires Feb 2027Since 2015
NPINational Provider Identifier
1346660081Issued 2014

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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 Dr. Feng?

Dr. Feng is an internist in Santa Ana, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.

NPI registry

What is Dr. Feng's address?

Dr. Feng is listed at 3401 W Sunflower Ave Ste 100, Santa Ana, CA 92704. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

How can I make an appointment with Dr. Feng?

The number on file is (888) 789-9585. Contact the office directly to confirm availability and scheduling.

NPI registry

What is the NPI for Dr. Feng?

Dr. Feng's National Provider Identifier is 1346660081. 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 Dr. Feng have?

Dr. Feng has 12+ years experience. Registered with an NPI since 2014. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.

NPI registry

Is Dr. Feng's profile verified?

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

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