Mary Grace Santos, PA-C
NPI 1538445945 · Physician Assistant · Los Angeles, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Grace Santos, PA-C is a Physician Assistant provider in Los Angeles, CA (NPI 1538445945).
Provider details
- NPI number
- 1538445945
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- PA20157 (CA)
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
14 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 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 45 | 20 |
| Metformin Hcl | 43 | 21 |
| Lisinopril | 35 | 19 |
| Amlodipine Besylate | 24 | 11 |
| Simvastatin | 23 | 12 |
| Alendronate Sodium | 20 | 11 |
| Glipizide | 19 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-10-30
- Last updated
- 2011-10-30
Frequently asked questions
- What is Mary Grace Santos's NPI number?
- Mary Grace Santos's National Provider Identifier (NPI) is 1538445945, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Grace Santos's specialty?
- Mary Grace Santos is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Grace Santos located?
- Mary Grace Santos's practice location on file with NPPES is 5701 S Hoover St, Los Angeles, CA 90037-4045.
- What is Mary Grace Santos's phone number?
- The practice phone number listed in the NPPES registry for Mary Grace Santos is (323) 541-1600.
- Does Mary Grace Santos accept Medicare?
- Mary Grace Santos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Grace Santos's NPI active?
- Yes — Mary Grace Santos's NPI (1538445945) is active in the NPPES registry as of the last update on 2011-10-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.