Thet Oo, MD
NPI 1538152095 · Geriatric Medicine (Internal Medicine) Physician · Colton, CA
Enrolled with Medicare as Practitioner - Hospice/Palliative Care · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thet Oo, MD is a Geriatric Medicine (Internal Medicine) Physician provider in Colton, CA (NPI 1538152095).
Provider details
- NPI number
- 1538152095
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A71774 (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
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 82 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 271 | 46 |
| Levothyroxine Sodium | 211 | 21 |
| Insulin Regular, Humanbrand: Humulin R | 137 | 19 |
| Furosemide | 129 | 22 |
| Lisinopril | 106 | 21 |
| Gabapentin | 103 | 17 |
| Metoprolol Tartrate | 99 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-30
- Last updated
- 2021-11-18
Frequently asked questions
- What is Thet Oo's NPI number?
- Thet Oo's National Provider Identifier (NPI) is 1538152095, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thet Oo's specialty?
- Thet Oo is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Thet Oo located?
- Thet Oo's practice location on file with NPPES is 400 N Pepper Ave, Colton, CA 92324-1801.
- What is Thet Oo's phone number?
- The practice phone number listed in the NPPES registry for Thet Oo is (909) 580-1675.
- Does Thet Oo accept Medicare?
- Thet Oo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thet Oo's NPI active?
- Yes — Thet Oo's NPI (1538152095) is active in the NPPES registry as of the last update on 2021-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.