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

Karen Chang, DO

Individual provider Gastroenterology Physician · NPI 1861855439

Karen Chang, DO is an Internal Medicine in Rialto, California. Graduated from Lake Erie College of Osteopathic Medicine, Erie in 2016, 10 years ago. Practices with San Bernardino Gastroenterology Associates Inc, a 7-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
10
Trained at
Lake Erie College of Osteopathic Medicine, Erie
Licensed in
CA
In the registry since
2016
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

2006 N Riverside Ave Ste B
Rialto, CA 92377-4697
Phone: (909) 644-4035
Fax: (909) 881-0668
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 20A16468 (CA)

Record details

NPI number1861855439
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 31, 2016
Last updated in NPPESJanuary 18, 2024
Certification dateJanuary 18, 2024
Mailing address2006 N Riverside Ave Ste B, Rialto, CA 92377-4697

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolLAKE ERIE COLLEGE OF OSTEOPATHIC MEDICINE, ERIE
Graduated 2016 (10 years in practice)
Group practice San Bernardino Gastroenterology Associates Inc — 7 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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