Irene TanM.D.
Obstetrics & Gynecology·Simi Valley, CA
Irene Tan, M.D. is an Obstetrics & Gynecology provider in Simi Valley, CA, as of July 2026.
- NPI1699942425
- Registered2008
- Class of2004
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Irene Tan at a glance
- Provider
- Irene Tan
- Credential
- M.D.
- Specialty
- Obstetrics/Gynecology
- Procedures
- Obstetrics & Gynecology CPT codes
- Location
- Simi Valley, CA
- Medical school graduation
- 2004
- NPI registered
- 2008
- NPI
- 1699942425
- 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 Irene Tan practice?
Irene Tan, M.D. is based in Simi Valley, CA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Irene Tan's NPI number?
Irene Tan's National Provider Identifier (NPI) is 1699942425, registered in 2008. Specialty on record: Obstetrics/Gynecology; credential M.D.
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, Irene Tan among them. The California Obstetrics & Gynecology directory lists each one by city with credential, NPI, and center affiliations.
Pilot Analysis
Get the complete Irene Tan analysis
Tell us where to send it. Our team will prepare an analysis of Irene Tan 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.