John LyonsM.D.
Gastroenterology·San Diego, CA
John Lyons, M.D. is a Gastroenterology provider in San Diego, CA affiliated with 3 ambulatory surgery centers in CA, as of July 2026.
- NPI1417156068
- Registered2007
- Centers3
- StateCA
- Class of2001
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Ambulatory surgery centers
Centers whose service lines match this provider’s. Affiliations change; verify independently.
Education
Education on record as of August 2026.
John Lyons at a glance
- Provider
- John Lyons
- Credential
- M.D.
- Specialty
- Gastroenterology
- Procedures
- Gastroenterology CPT codes
- Location
- San Diego, CA
- Medical school
- University of Southern California Keck School of Medicine
- Graduated
- 2001
- NPI registered
- 2007
- NPI
- 1417156068
- 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 John Lyons practice?
John Lyons, M.D. is based in San Diego, CA and is affiliated with 3 ambulatory surgery centers: Pomerado Outpatient Surgical Center Lp in San Diego, CA, Scripps Health in San Diego, CA, and Scripps Health in San Diego, CA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is John Lyons's NPI number?
John Lyons's National Provider Identifier (NPI) is 1417156068, registered in 2007. Specialty on record: Gastroenterology; credential M.D.
Where did John Lyons go to medical school?
John Lyons, M.D. attended University of Southern California Keck School of Medicine, graduating in 2001.
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, John Lyons among them. The California Gastroenterology directory lists each one by city with credential, NPI, and center affiliations.
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