Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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John Chang, MD

Individual provider Anesthesiology Physician · NPI 1598704827

John Chang, MD is an Anesthesiology in Mission Viejo, California. Graduated from Jefferson Medical College of Thomas Jefferson University in 1996, 30 years ago. Practices with Western Anesthesia Medical Associates Inc, a 49-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
30
Trained at
Jefferson Medical College of Thomas Jefferson University
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

27401 Los Altos 180
Mission Viejo, CA 92691-6316
Phone: (949) 582-9624
Fax: (949) 582-9626
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence A65638 (CA)

Record details

NPI number1598704827
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 5, 2006
Last updated in NPPESFebruary 12, 2010

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyANESTHESIOLOGY
Medical schoolJEFFERSON MEDICAL COLLEGE OF THOMAS JEFFERSON UNIVERSITY
Graduated 1996 (30 years in practice)
Group practice Western Anesthesia Medical Associates Inc — 49 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Mission Viejo