Are you Dr. Leff? This profile is yours to edit: update your address, phone, photo and services.

Edit this profile

Physician Profile

Arnold S. Leff, MD

Is this you? Edit this profile

At a glance

About Dr. Leff

Based in San Jose, CA, Arnold S. Leff, MD is listed in the NPI registry under family medicine. Arnold is also listed as specializing in family medicine — geriatric medicine. NPI 1326004730 identifies this record in the national registry.

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

Specialty

Credentials & Licensing

CA · Physician and Surgeon CMedical Board of California
No. 31564DelinquentExpired Dec 31, 2025Since 1969
NPINational Provider Identifier
1326004730Issued 2006

Snapshot · verify with the board ↗

Common questions

What kind of doctor is Dr. Leff?

Dr. Leff is a family doctor in San Jose, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Family Medicine”.

NPI registry

What is Dr. Leff's address?

Dr. Leff is listed at 2400 Moorpark Ave Internal Medicine Department, San Jose, CA 95128. 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. Leff?

The number on file is (408) 885-5000. Contact the office directly to confirm availability and scheduling.

NPI registry

What is Dr. Leff's NPI number?

Dr. Leff's National Provider Identifier is 1326004730. 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. Leff been practicing?

Dr. Leff 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. Leff confirmed this information?

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

Guide.md

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