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

Dr. Tommy Yu-Do Yen, MD

Individual provider Internal Medicine Physician · NPI 1053421958

Dr. Tommy Yu-Do Yen, MD is a Gastroenterology in Santee, California. Qualified in 1994, 32 years ago. Practices with St Josephs Medical Center, a 240-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
32
Licensed in
CA
In the registry since
2006
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

9456 Cuyamaca St Ste 102
Santee, CA 92071-5919
Phone: (619) 588-4074
Fax: (619) 588-4004
Show map & directions

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

Additional practice locations (1)

  • 6699 Alvarado Rd Ste 2301, San Diego, CA 92120-5241 — (619) 588-4074

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence A060085 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence A060085 (CA)
Hepatology Physician Taxonomy 207RI0008X · Licence A060085 (CA)

Record details

NPI number1053421958
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 30, 2006
Last updated in NPPESFebruary 10, 2026
Certification dateFebruary 10, 2026

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Medical schoolOTHER
Graduated 1994 (32 years in practice)
Group practice St Josephs Medical Center — 240 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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