Michael Brian Peffer, PA
Physician Assistant · Los Angeles, CA
Michael Brian Peffer, PA is a physician assistant with a practice address in Los Angeles, California, and NPI 1538652128, issued on Jun 8, 2018. Check the license (California 55919, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Michael Brian Peffer
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 55919 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1520 San Pablo St Ste 3800, Los Angeles, CA 90033
- Phone
- (323) 442-5720
- Enumerated
- Jun 8, 2018
- Record last updated
- Nov 10, 2024
- Medicare enrollment
- Enrolled (PECOS I20190425000984); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 1520 San Pablo St Ste 3800
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael Brian Peffer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 55919Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average physician assistant in 2024
35 Medicare Part D claims for 20 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 15 claims were for opioids.
Most prescribed
- Cephalexin13 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
- Usc Care Medical Group IncLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Brian Peffer among 14,451 physician assistant records in California
Michael Brian Peffer, PA is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 52% of them.
- NPI issued2018 · 52% of these records are older, 44% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2018 · median 2018 among the 7,214 with a school on file
- Record last updated2024 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
935 physician assistant records list a practice address in Los Angeles
They are 935 of the 69,537 NPPES records with a practice address in Los Angeles, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Los Angeles → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Bryan Block, P.A.-CLos Angeles, CA 900331982627881
- Dawn Fishback, P.A.-CLos Angeles, CA 900331568680874
- Robert Harper, PA-CLos Angeles, CA 900331134234545
- Lillie Hudson, P.A.Los Angeles, CA 900331902946007
- Sunitha Husson, PA-CLos Angeles, CA 900331962446740
- Jose Lopez, PACLos Angeles, CA 900331245364785
- Oscar Miles-Smith, PALos Angeles, CA 900331336295526
- Eva Moya, PA-CLos Angeles, CA 900331295885820
Common questions
What is Michael Brian Peffer, PA's NPI number?
Michael Brian Peffer, PA's National Provider Identifier (NPI) is 1538652128, issued on Jun 8, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Michael Brian Peffer, PA located?
The NPPES record lists a practice address at 1520 San Pablo St Ste 3800, Los Angeles, CA, 90033. Phone: (323) 442-5720. Providers update this record themselves, so call before visiting.
How can I verify Michael Brian Peffer, PA's license?
NPPES lists California license number 55919, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Michael Brian Peffer, PA prescribe under Medicare Part D?
In 2024, Michael Brian Peffer, PA had 35 Medicare Part D claims for 20 beneficiaries; the average among physician assistant prescribers was 830. 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.