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Physician Profile

Jay W. Marks, MD

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At a glance

About Dr. Marks

Jay W. Marks, MD is a healthcare provider in Los Angeles, CA specializing in gastroenterology. This provider record is associated with NPI 1003871914.

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

Specialty

Gastroenterology (Primary)

Credentials & Licensing

CA · Physician and Surgeon GMedical Board of California
No. 21318CurrentExpires May 2028Since 1971
NPINational Provider Identifier
1003871914Issued 2006

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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 does Dr. Marks specialize in?

Dr. Marks is a gastroenterologist in Los Angeles, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.

NPI registry

Where is Dr. Marks located?

Dr. Marks is listed at 8635 W 3Rd St Suite #880, Los Angeles, CA 90048. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

What is Dr. Marks's phone number?

The number on file is (323) 469-4499. Contact the office directly to confirm availability and scheduling.

NPI registry

What is Dr. Marks's NPI number?

Dr. Marks's National Provider Identifier is 1003871914. 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 Dr. Marks been practicing?

Dr. Marks 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 Dr. Marks confirmed this information?

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

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