Anthony Arroyo, MD
NPI 1376621458 · Internal Medicine Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Anthony Arroyo, MD is a Internal Medicine Physician provider in Walnut Creek, CA (NPI 1376621458).
Provider details
- NPI number
- 1376621458
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A71372 (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
19 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 · 107 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 908 | 302 |
| Amlodipine Besylate | 444 | 162 |
| Lisinopril | 343 | 126 |
| Levothyroxine Sodium | 248 | 83 |
| Fluticasone Propionate | 214 | 87 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 197 | 96 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-02
- Last updated
- 2021-12-22
Frequently asked questions
- What is Anthony Arroyo's NPI number?
- Anthony Arroyo's National Provider Identifier (NPI) is 1376621458, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Anthony Arroyo's specialty?
- Anthony Arroyo is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Anthony Arroyo located?
- Anthony Arroyo's practice location on file with NPPES is 1425 S Main St, Walnut Creek, CA 94596-5318.
- What is Anthony Arroyo's phone number?
- The practice phone number listed in the NPPES registry for Anthony Arroyo is (925) 295-4000.
- Does Anthony Arroyo accept Medicare?
- Anthony Arroyo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Anthony Arroyo's NPI active?
- Yes — Anthony Arroyo's NPI (1376621458) is active in the NPPES registry as of the last update on 2021-12-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.