Aaron Pessl, M.D.
NPI 1063425072 · Emergency Medicine Physician · Hayward, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Aaron Pessl, M.D. is a Emergency Medicine Physician provider in Hayward, CA (NPI 1063425072).
Provider details
- NPI number
- 1063425072
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A89998 (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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetronbrand: Ondansetron Odt | 29 | 29 |
| Prednisone | 25 | 25 |
| Cefpodoxime Proxetil | 25 | 25 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 17 | 14 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 16 | 16 |
| Ibuprofen | 14 | 14 |
| Hydrocodone/Acetaminophen |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-14
- Last updated
- 2021-12-09
Frequently asked questions
- What is Aaron Pessl's NPI number?
- Aaron Pessl's National Provider Identifier (NPI) is 1063425072, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Aaron Pessl's specialty?
- Aaron Pessl is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Aaron Pessl located?
- Aaron Pessl's practice location on file with NPPES is 27400 Hesperian Blvd, Hayward, CA 94545-4235.
- What is Aaron Pessl's phone number?
- The practice phone number listed in the NPPES registry for Aaron Pessl is (510) 784-4525.
- Does Aaron Pessl accept Medicare?
- Aaron Pessl is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Aaron Pessl's NPI active?
- Yes — Aaron Pessl's NPI (1063425072) is active in the NPPES registry as of the last update on 2021-12-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.