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

Dr. Thiri T Oo, MD

Individual provider Internal Medicine Physician · NPI 1619256617

Dr. Thiri T Oo, MD is an Internal Medicine in Claremont, California. Qualified in 2009, 17 years ago. Practices with Southern California Permanente Medical Group, an 11,242-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
17
Licensed in
CA
In the registry since
2011
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

250 W San Jose Ave
Claremont, CA 91711-5207
Phone: (833) 574-2273
Show map & directions

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

Additional practice locations (3)

  • 8311 Florence Ave, Downey, CA 90240-3928 — (562) 923-4911
  • 1200 N State St, Los Angeles, CA 90033-1029 — (323) 226-7556
  • 831 E Huntington Dr Ste 101, Monrovia, CA 91016-6423 — (626) 358-0269

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A117718 (CA)

Record details

NPI number1619256617
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedAugust 8, 2011
Last updated in NPPESDecember 1, 2021
Certification dateDecember 1, 2021
Mailing address250 W San Jose Ave, Claremont, CA 91711-5207

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2009 (17 years in practice)
Group practice Southern California Permanente Medical Group — 11242 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Claremont