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

Dr. Johnny Tzer-Ren Chang, MD

Individual provider Plastic Surgery Physician · NPI 1417175258

Dr. Johnny Tzer-Ren Chang, MD is a Plastic and Reconstructive Surgery in Palo Alto, California. Graduated from Tufts University School of Medicine in 2006, 20 years ago. Practices with Sutter Bay Medical Foundation, a 3,762-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
20
Trained at
Tufts University School of Medicine
Licensed in
CA
In the registry since
2007
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

795 El Camino Real Lee Bldg Level 3
Palo Alto, CA 94301-2302
Phone: (650) 853-2916
Fax: (650) 853-2852
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Plastic Surgery Physician (primary) Taxonomy 208200000X · Licence A121316 (CA)

Record details

NPI number1417175258
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 24, 2007
Last updated in NPPESMay 28, 2020
Certification dateMay 28, 2020

Medicare enrollment

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

Medicare specialtyPLASTIC AND RECONSTRUCTIVE SURGERY
Also practisesHAND SURGERY
Medical schoolTUFTS UNIVERSITY SCHOOL OF MEDICINE
Graduated 2006 (20 years in practice)
Group practice Sutter Bay Medical Foundation — 3762 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations7 on file with Medicare

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