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

Ronald Chang, MD

Individual provider Internal Medicine Physician · NPI 1861810863

Ronald Chang, MD is an Internal Medicine in Pomona, California. Qualified in 2014, 12 years ago. Practices with Hospitalist Corporation of Inland Empire, a 27-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
12
Licensed in
CA
In the registry since
2014
Specialties on file
2
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

1880 N Orange Grove Ave
Pomona, CA 91767-3006
Phone: (909) 630-7158
Fax: (909) 630-7983
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence A141360 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence A141360 (CA)

Record details

NPI number1861810863
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 7, 2014
Last updated in NPPESOctober 3, 2018
Mailing address840 Towne Center Dr, Pomona, CA 91767-5900

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2014 (12 years in practice)
Group practice Hospitalist Corporation Of Inland Empire — 27 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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