Aaron Mark Acosta, DO
NPI 1538789987 · Emergency Medicine Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Aaron Mark Acosta, DO is a Emergency Medicine Physician provider in Walnut Creek, CA (NPI 1538789987).
Provider details
- NPI number
- 1538789987
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- 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
6 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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Naproxen | 50 | 50 |
| Ondansetronbrand: Ondansetron Odt | 25 | 25 |
| Cefadroxil | 14 | 14 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 13 | 11 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 12 | 12 |
| Oxycodone Hcl | 12 | 12 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim |
Practice location
Mailing address
Additional practice locations (1)
- 6071 W Outer DrDetroit, MI 48235-2624Phone: (313) 966-1020
Registry dates
- Enumerated
- 2020-04-24
- Last updated
- 2023-08-18
- Certified
- 2023-08-18
Frequently asked questions
- What is Aaron Mark Acosta's NPI number?
- Aaron Mark Acosta's National Provider Identifier (NPI) is 1538789987, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Aaron Mark Acosta's specialty?
- Aaron Mark Acosta is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Aaron Mark Acosta located?
- Aaron Mark Acosta's practice location on file with NPPES is 1425 S Main St, Walnut Creek, CA 94596-5318.
- What is Aaron Mark Acosta's phone number?
- The practice phone number listed in the NPPES registry for Aaron Mark Acosta is (925) 295-4000.
- Does Aaron Mark Acosta accept Medicare?
- Aaron Mark Acosta is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Aaron Mark Acosta's NPI active?
- Yes — Aaron Mark Acosta's NPI (1538789987) is active in the NPPES registry as of the last update on 2023-08-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.