Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Ronald Chan, MD

Individual provider Diagnostic Radiology Physician · NPI 1154367993

Dr. Ronald Chan, MD practises Diagnostic Radiology in Walnut Creek, California. Graduated from New York University School of Medicine in 1998, 28 years ago. Practices with John Muir Magnetic Imaging Center, a 55-clinician group. Licensed in California.

Years since qualifying
28
Trained at
New York University School of Medicine
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

2125 Oak Grove Rd Ste 200
Walnut Creek, CA 94598-2536 Not confirmed with CMS for 11 years — call before visiting
Phone: (925) 296-7150
Fax: (925) 296-7171
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence A82947 (CA)

Record details

NPI number1154367993
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 21, 2006
Last updated in NPPESApril 2, 2015

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolNEW YORK UNIVERSITY SCHOOL OF MEDICINE
Graduated 1998 (28 years in practice)
Group practice John Muir Magnetic Imaging Center — 55 clinicians
Accepts Medicare assignment Not indicated
Practice locations9 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients4,072
Services billed 8,555 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at John Muir Magnetic Imaging Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 55 clinicians in the practice; 12 are shown here.

Other providers in Walnut Creek