Lydia Villanueva, M.D.
NPI 1972563765 · Internal Medicine Physician · Fontana, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lydia Villanueva, M.D. is a Internal Medicine Physician provider in Fontana, CA (NPI 1972563765).
Provider details
- NPI number
- 1972563765
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A51183 (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 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azithromycin | 51 | 50 |
| Prednisone | 30 | 28 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 29 | 29 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 28 | 25 |
| Atorvastatin Calcium | 25 | 12 |
| Mupirocin | 24 | 21 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-24
- Last updated
- 2021-12-21
- Certified
- 2021-12-21
Frequently asked questions
- What is Lydia Villanueva's NPI number?
- Lydia Villanueva's National Provider Identifier (NPI) is 1972563765, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lydia Villanueva's specialty?
- Lydia Villanueva is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lydia Villanueva located?
- Lydia Villanueva's practice location on file with NPPES is 8110 Mango Ave, Fontana, CA 92335-3603.
- What is Lydia Villanueva's phone number?
- The practice phone number listed in the NPPES registry for Lydia Villanueva is (909) 822-1164.
- Does Lydia Villanueva accept Medicare?
- Lydia Villanueva is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lydia Villanueva's NPI active?
- Yes — Lydia Villanueva's NPI (1972563765) is active in the NPPES registry as of the last update on 2021-12-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.