Rob A. Maestretti, PA
Medical Physician Assistant · Oakland, CA
Rob A. Maestretti, PA is a medical physician assistant with a practice address in Oakland, California, and NPI 1558556423, issued on Sep 13, 2007. Check the license (California 20208, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Rob A. Maestretti
- Credential
- PA
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License numbers
- 20208 CA
AT 5950 CA
Self-reported in NPPES; status is on the state search - Practice location
- 275 W Macarthur Blvd, Oakland, CA 94611
- Phone
- (510) 752-1000
- Enumerated
- Sep 13, 2007
- Record last updated
- Jan 3, 2022
- Medicare enrollment
- Enrolled (PECOS I20090406000236); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,376 in California → Look up another NPI →
Also registered at 275 W Macarthur Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Bilal Abu-Alrub, DOStudent in an Organized Health Care Education/Training Program1609760768
- Walter Acuna, MDInternal Medicine Physician1972655108
- Brett Adams, MDStudent in an Organized Health Care Education/Training Program1841731098
Verify Rob A. Maestretti in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 20208Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
39% fewer Medicare Part D claims than the average medical physician assistant in 2024
703 Medicare Part D claims for 234 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. 277 claims were for opioids.
Most prescribed
- Oxycodone Hcl134 claims
- Tizanidine Hcl85 claims
- Hydrocodone-Acetaminophen75 claims
- Dexamethasone48 claims
- Famotidine46 claims
- Hydromorphone Hcl32 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Permanente Medical Group IncRichmond, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rob A. Maestretti among 3,376 medical physician assistant records in California
Rob A. Maestretti, PA is one of 3,376 medical physician assistant records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 20% of them.
- NPI issued2007 · 20% of these records are older, 68% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2008 · median 2012 among the 1,347 with a school on file
- Record last updated2022 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in California
There are 3,376 medical physician assistant records in California.
All 3,376 in California → Every provider in Oakland → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Huberto Jacobo, PAOakland, CA 946111982858072
- Victoria Yin, PAOakland, CA 946111679871461
- Cyril Callister, PA-COakland, CA 946091871518977
- Elizabeth Cooper, R.D., PA-COakland, CA 946091396828539
- Rebecca Hu, PA-COakland, CA 946091700286937
- Skylar James, PHYSICIAN ASSISTANTOakland, CA 946091306555149
- Susan Lozier, PA, MMSCOakland, CA 946091144595752
- Jennifer Mustard, PAOakland, CA 946091063960268
Common questions
What is Rob A. Maestretti, PA's NPI number?
Rob A. Maestretti, PA's National Provider Identifier (NPI) is 1558556423, issued on Sep 13, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Rob A. Maestretti, PA located?
The NPPES record lists a practice address at 275 W Macarthur Blvd, Oakland, CA, 94611. Phone: (510) 752-1000. Providers update this record themselves, so call before visiting.
How can I verify Rob A. Maestretti, PA's license?
NPPES lists California license number 20208, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Rob A. Maestretti, PA prescribe under Medicare Part D?
In 2024, Rob A. Maestretti, PA had 703 Medicare Part D claims for 234 beneficiaries; the average among medical physician assistant prescribers was 1,148. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.