John KohMD
Obstetrics & Gynecology·Simi Valley, CA
John Koh, MD is an Obstetrics & Gynecology provider in Simi Valley, CA, as of July 2026.
- NPI1841283009
- Registered2005
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
John Koh at a glance
- Provider
- John Koh
- Credential
- MD
- Specialty
- Obstetrics & Gynecology
- Procedures
- Obstetrics & Gynecology CPT codes
- Location
- Simi Valley, CA
- NPI registered
- 2005
- NPI
- 1841283009
- 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 Koh practice?
John Koh, MD is based in Simi Valley, CA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is John Koh's NPI number?
John Koh's National Provider Identifier (NPI) is 1841283009, registered in 2005. Specialty on record: Obstetrics & Gynecology; credential MD.
How many Obstetrics & Gynecology providers in California work at ambulatory surgery centers?
544 Obstetrics & Gynecology surgeons and proceduralists in California are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, John Koh among them. The California Obstetrics & Gynecology directory lists each one by city with credential, NPI, and center affiliations.
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