Thiri Oo, M.D.
NPI 1619256617 · Internal Medicine Physician · Claremont, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Provider details
- NPI number
- 1619256617
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- A117718 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
4 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 114 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 488 | 166 |
| Amlodipine Besylate | 275 | 99 |
| Losartan Potassium | 271 | 92 |
| Lisinopril | 264 | 88 |
| Levothyroxine Sodium | 254 | 83 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 183 | 45 |
Practice location
Mailing address
Additional practice locations (3)
- 8311 Florence AveDowney, CA 90240-3928Phone: (562) 923-4911
- 1200 N State StClinic Tower A7dLos Angeles, CA 90033-1029Phone: (323) 226-7556
- 831 E Huntington Dr Ste 101Monrovia, CA 91016-6423Phone: (626) 358-0269
Registry dates
- Enumerated
- 2011-08-08
- Last updated
- 2021-12-01
- Certified
- 2021-12-01
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.