John ChangMD
Anesthesiology·Mission Viejo, CA
John Chang, MD is an Anesthesiology provider in Mission Viejo, CA affiliated with 4 ambulatory surgery centers in CA, as of July 2026.
- NPI1598704827
- Registered2006
- Centers4
- StateCA
- Class of1996
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.
- Pacificoast Ambulatory Surgicenter LLCSan Clemente, CA · Gastroenterology · 1 on panelView center →
- Specialty Surgical Center IrvineIrvine, CA · Gastroenterology, Ophthalmology, Orthopedics · 30 on panelView center →
- Alicia Surgery CenterLaguna Hills, CA · Ophthalmology · 9 on panelView center →
- Oso Surgery Center LLCMission Viejo, CA · Pain management · 5 on panelView center →
Education
Education on record as of August 2026.
John Chang at a glance
- Provider
- John Chang
- Credential
- MD
- Specialty
- Anesthesiology
- Procedures
- Anesthesiology CPT codes
- Location
- Mission Viejo, CA
- Medical school
- Jefferson Medical College of Thomas Jefferson University
- Graduated
- 1996
- NPI registered
- 2006
- NPI
- 1598704827
- 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 Chang practice?
John Chang, MD is based in Mission Viejo, CA and is affiliated with 4 ambulatory surgery centers: Pacificoast Ambulatory Surgicenter LLC in San Clemente, CA, Specialty Surgical Center Irvine in Irvine, CA, Alicia Surgery Center in Laguna Hills, CA, and Oso Surgery Center LLC in Mission Viejo, CA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is John Chang's NPI number?
John Chang's National Provider Identifier (NPI) is 1598704827, registered in 2006. Specialty on record: Anesthesiology; credential MD.
Where did John Chang go to medical school?
John Chang, MD attended Jefferson Medical College of Thomas Jefferson University, graduating in 1996.
How many Anesthesiology providers in California work at ambulatory surgery centers?
130 Anesthesiology surgeons and proceduralists in California are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, John Chang among them. The California Anesthesiology directory lists each one by city with credential, NPI, and center affiliations.
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