Viviana Mendez, MD
NPI 1659833077 · Internal Medicine Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Viviana Mendez, MD is a Internal Medicine Physician provider in San Jose, CA (NPI 1659833077).
Provider details
- NPI number
- 1659833077
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 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 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 94 | 38 |
| Amlodipine Besylate | 92 | 37 |
| Losartan Potassium | 55 | 20 |
| Levothyroxine Sodium | 32 | 14 |
| Metformin Hcl | 32 | 19 |
| Gabapentin | 27 | 15 |
| Lidocaine | 24 |
Practice location
Mailing address
Additional practice locations (1)
- 4150 V St # 1100Sacramento, CA 95817-1460Phone: (916) 734-2737
Registry dates
- Enumerated
- 2019-04-03
- Last updated
- 2022-07-05
- Certified
- 2022-07-05
Frequently asked questions
- What is Viviana Mendez's NPI number?
- Viviana Mendez's National Provider Identifier (NPI) is 1659833077, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Viviana Mendez's specialty?
- Viviana Mendez is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Viviana Mendez located?
- Viviana Mendez's practice location on file with NPPES is 2400 Moorpark Ave Ste 220b, San Jose, CA 95128-2631.
- What is Viviana Mendez's phone number?
- The practice phone number listed in the NPPES registry for Viviana Mendez is (888) 334-1000.
- Does Viviana Mendez accept Medicare?
- Viviana Mendez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Viviana Mendez's NPI active?
- Yes — Viviana Mendez's NPI (1659833077) is active in the NPPES registry as of the last update on 2022-07-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.