Zachary Nicholas, M.D.
NPI 1659996700 · Family Medicine Physician · Martinez, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zachary Nicholas, M.D. is a Family Medicine Physician provider in Martinez, CA (NPI 1659996700).
Provider details
- NPI number
- 1659996700
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A183407 (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
6 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 · 42 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 84 | 36 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 48 | 13 |
| Amlodipine Besylate | 47 | 18 |
| Pantoprazole Sodium | 41 | 14 |
| Omeprazole | 37 | — |
| Gabapentin | 36 | 11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-06-15
- Last updated
- 2024-12-02
- Certified
- 2024-12-02
Frequently asked questions
- What is Zachary Nicholas's NPI number?
- Zachary Nicholas's National Provider Identifier (NPI) is 1659996700, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zachary Nicholas's specialty?
- Zachary Nicholas is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Zachary Nicholas located?
- Zachary Nicholas's practice location on file with NPPES is 2500 Alhambra Ave, Martinez, CA 94553-3156.
- What is Zachary Nicholas's phone number?
- The practice phone number listed in the NPPES registry for Zachary Nicholas is (925) 370-5000.
- Does Zachary Nicholas accept Medicare?
- Zachary Nicholas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zachary Nicholas's NPI active?
- Yes — Zachary Nicholas's NPI (1659996700) is active in the NPPES registry as of the last update on 2024-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.