Lucy Oh, MD
NPI 1265516256 · Internal Medicine Physician · Santa Rosa, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lucy Oh, MD is a Internal Medicine Physician provider in Santa Rosa, CA (NPI 1265516256).
Provider details
- NPI number
- 1265516256
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A55875 (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
19 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 · 110 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 664 | 240 |
| Lisinopril | 343 | 122 |
| Levothyroxine Sodium | 329 | 110 |
| Amlodipine Besylate | 323 | 118 |
| Losartan Potassium | 249 | 89 |
| Alendronate Sodium | 178 | 60 |
| Hydrochlorothiazide | 159 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-25
- Last updated
- 2021-12-13
Frequently asked questions
- What is Lucy Oh's NPI number?
- Lucy Oh's National Provider Identifier (NPI) is 1265516256, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lucy Oh's specialty?
- Lucy Oh is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lucy Oh located?
- Lucy Oh's practice location on file with NPPES is 401 Bicentennial Way, Santa Rosa, CA 95403-2149.
- What is Lucy Oh's phone number?
- The practice phone number listed in the NPPES registry for Lucy Oh is (707) 571-4000.
- Does Lucy Oh accept Medicare?
- Lucy Oh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lucy Oh's NPI active?
- Yes — Lucy Oh's NPI (1265516256) is active in the NPPES registry as of the last update on 2021-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.