Uyen Ly, MD
NPI 1700889128 · Family Medicine Physician · Occidental, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Uyen Ly, MD is a Family Medicine Physician provider in Occidental, CA (NPI 1700889128).
Provider details
- NPI number
- 1700889128
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A76278 (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
21 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 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 36 | 35 |
| Fluticasone Propionate | 34 | 30 |
| Lisinopril | 31 | 20 |
| Losartan Potassium | 20 | — |
| Levothyroxine Sodium | 19 | 14 |
| Atorvastatin Calcium | 19 | 17 |
| Hydrocodone/Acetaminophen |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-05-31
- Last updated
- 2022-01-06
- Certified
- 2022-01-06
Frequently asked questions
- What is Uyen Ly's NPI number?
- Uyen Ly's National Provider Identifier (NPI) is 1700889128, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Uyen Ly's specialty?
- Uyen Ly is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Uyen Ly located?
- Uyen Ly's practice location on file with NPPES is 3802 Main Street, Occidental, CA 95465.
- What is Uyen Ly's phone number?
- The practice phone number listed in the NPPES registry for Uyen Ly is (707) 874-2444.
- Does Uyen Ly accept Medicare?
- Uyen Ly is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Uyen Ly's NPI active?
- Yes — Uyen Ly's NPI (1700889128) is active in the NPPES registry as of the last update on 2022-01-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.