John BillesdonM.D.
John Billesdon, M.D. is a Gastroenterology provider in Oxnard, CA affiliated with 1 ambulatory surgery center in CA, as of July 2026.
- NPI1184648933
- Registered2006
- Centers1
- StateCA
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.
John Billesdon at a glance
- Provider
- John Billesdon
- Credential
- M.D.
- Specialty
- Gastroenterology
- Procedures
- Gastroenterology CPT codes
- Location
- Oxnard, CA
- NPI registered
- 2006
- NPI
- 1184648933
- 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 Billesdon practice?
John Billesdon, M.D. is based in Oxnard, CA and is affiliated with 1 ambulatory surgery center: Channel Islands Surgicenter Lp in Oxnard, CA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is John Billesdon's NPI number?
John Billesdon's National Provider Identifier (NPI) is 1184648933, 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, John Billesdon among them. The California Gastroenterology directory lists each one by city with credential, NPI, and center affiliations.
Pilot Analysis
Get the complete John Billesdon analysis
Tell us where to send it. Our team will prepare an analysis of John Billesdon covering case volumes, referral patterns, payer mix, and how specialty peers compare, and email it to you within 5-10 business days. Need it faster? Book a demo.