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

Dr. Andrew Yen, MD

Individual provider Internal Medicine Physician · NPI 1992781884

Dr. Andrew Yen, MD is an Internal Medicine Physician in Mather, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

10535 Hospital Way 111/G Division Of Gastroenterology
Mather, CA 95655 Not confirmed with CMS for 16 years — call before visiting
Phone: (916) 366-5339
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A92631 (CA)

Record details

NPI number1992781884
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedDecember 21, 2005
Last updated in NPPESAugust 10, 2010

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