Rob Maestretti, PA
NPI 1558556423 · Medical Physician Assistant · Oakland, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rob Maestretti, PA is a Medical Physician Assistant provider in Oakland, CA (NPI 1558556423).
Provider details
- NPI number
- 1558556423
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Male
- Sole proprietor
- No
- License
- AT 5950 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 134 | 98 |
| Tizanidine Hcl | 85 | 61 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 75 | 39 |
| Dexamethasone | 48 | 47 |
| Famotidine | 46 | 43 |
| Hydromorphone Hcl | 32 | 15 |
| Gabapentin | 27 | 14 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-09-13
- Last updated
- 2022-01-03
Frequently asked questions
- What is Rob Maestretti's NPI number?
- Rob Maestretti's National Provider Identifier (NPI) is 1558556423, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rob Maestretti's specialty?
- Rob Maestretti is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Rob Maestretti located?
- Rob Maestretti's practice location on file with NPPES is 275 W Macarthur Blvd, Oakland, CA 94611-5641.
- What is Rob Maestretti's phone number?
- The practice phone number listed in the NPPES registry for Rob Maestretti is (510) 752-1000.
- Does Rob Maestretti accept Medicare?
- Rob Maestretti is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rob Maestretti's NPI active?
- Yes — Rob Maestretti's NPI (1558556423) is active in the NPPES registry as of the last update on 2022-01-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.