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

Dr. Richard Minyoung Chang, MD

Individual provider Internal Medicine Physician · NPI 1275669954

Dr. Richard Minyoung Chang, MD is an Undefined Physician Type (Specify) in Walnut Creek, California. Qualified in 1999, 27 years ago. Practices with John Muir Physician Network, a 486-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
27
Licensed in
CA
In the registry since
2007
Specialties on file
3
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

1450 Treat Blvd Ste 220B
Walnut Creek, CA 94597-2168
Phone: (925) 937-1770
Fax: (925) 937-0630
Show map & directions

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

Specialties & licences

Interventional Cardiology Physician (primary) Taxonomy 207RI0011X · Licence A83588 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence A83588 (CA)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence A83588 (CA)

Record details

NPI number1275669954
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 26, 2007
Last updated in NPPESAugust 11, 2015

Medicare enrollment

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

Medicare specialtyUNDEFINED PHYSICIAN TYPE (SPECIFY)
Also practisesCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolOTHER
Graduated 1999 (27 years in practice)
Group practice John Muir Physician Network — 486 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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