Simon RitchkenM.D.

Gastroenterology·San Diego, CA

Simon Ritchken, M.D. is a Gastroenterology provider in San Diego, CA affiliated with 1 ambulatory surgery center in CA, as of July 2026.

NPI1255399341
Registered2006
Centers1
StateCA
Class of1973

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Ambulatory surgery centers

Centers whose service lines match this provider’s. Affiliations change; verify independently.

Ucsd Ambulatory Surgery Center LLCSan Diego, CA · Oral & maxillofacial, ENT, Gastroenterology, Orthopedics, Pain management, Plastic surgery · 30 on panelView center →

Simon Ritchken at a glance

Provider: Simon Ritchken
Credential: M.D.
Specialty: Gastroenterology
Procedures: Gastroenterology CPT codes
Location: San Diego, CA
Medical school graduation: 1973
NPI registered: 2006
NPI: 1255399341
Snapshot: July 2026

Identity, specialty, and affiliations change over time. This is not an endorsement, and not clinical, billing, or legal advice. Providers may request corrections at founders@datalilyai.com. Read the DataLily AI data methodology.

Questions

Where does Simon Ritchken practice?

Simon Ritchken, M.D. is based in San Diego, CA and is affiliated with 1 ambulatory surgery center: Ucsd Ambulatory Surgery Center LLC in San Diego, CA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.

What is Simon Ritchken's NPI number?

Simon Ritchken's National Provider Identifier (NPI) is 1255399341, registered in 2006. Specialty on record: Gastroenterology; credential M.D.

How many Gastroenterology providers in California work at ambulatory surgery centers?

547 Gastroenterology surgeons and proceduralists in California are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Simon Ritchken among them. The California Gastroenterology directory lists each one by city with credential, NPI, and center affiliations.

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