Charmaine Santos, PA-C
NPI 1386341576 · Physician Assistant · Antioch, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charmaine Santos, PA-C is a Physician Assistant provider in Antioch, CA (NPI 1386341576).
Provider details
- NPI number
- 1386341576
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 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 · 75 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 316 | 149 |
| Amlodipine Besylate | 253 | 99 |
| Metoprolol Succinate | 200 | 83 |
| Atorvastatin Calcium | 198 | 80 |
| Levothyroxine Sodium | 163 | 72 |
| Losartan Potassium | 160 | 66 |
Practice location
Mailing address
Additional practice locations (1)
- 3100 Telegraph AveOakland, CA 94609-3239Phone: (800) 607-6377
Registry dates
- Enumerated
- 2023-02-08
- Last updated
- 2025-02-27
- Certified
- 2025-02-27
Frequently asked questions
- What is Charmaine Santos's NPI number?
- Charmaine Santos's National Provider Identifier (NPI) is 1386341576, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charmaine Santos's specialty?
- Charmaine Santos is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Charmaine Santos located?
- Charmaine Santos's practice location on file with NPPES is 3903 Lone Tree Way Ste 104, Antioch, CA 94509-6251.
- What is Charmaine Santos's phone number?
- The practice phone number listed in the NPPES registry for Charmaine Santos is (925) 755-1255.
- Does Charmaine Santos accept Medicare?
- Charmaine Santos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charmaine Santos's NPI active?
- Yes — Charmaine Santos's NPI (1386341576) is active in the NPPES registry as of the last update on 2025-02-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.