Michael Meriwether Riley, P.A.
Medical Physician Assistant · Santa Fe Springs, CA
Michael Meriwether Riley, P.A. is a medical physician assistant with a practice address in Santa Fe Springs, California, and NPI 1306093174, issued on Aug 25, 2008. Check the license (California PA12751, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Michael Meriwether Riley
- Credential
- P.A.
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- PA12751 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11817 East Telegraph RD, Santa Fe Springs, CA 90670
- Phone
- (562) 949-9328
- Enumerated
- Aug 25, 2008
- Record last updated
- Aug 25, 2008 (not updated in 18 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,376 in California → Look up another NPI →
Verify Michael Meriwether Riley in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA12751Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average medical physician assistant in 2024
167 Medicare Part D claims for 97 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
Most prescribed
- Ibuprofen45 claims
- Albuterol Sulfate Hfa12 claims
- Cephalexin12 claims
- Prednisone11 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.
Michael Meriwether Riley among 3,376 medical physician assistant records in California
Michael Meriwether Riley, P.A. 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 2008, is newer than 32% of them.
- NPI issued2008 · 32% of these records are older, 62% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · 40% of these records are
- Record last updated2008 · 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).
19 medical physician assistant records list a practice address in Santa Fe Springs
They are 19 of the 1,329 NPPES records with a practice address in Santa Fe Springs, and 3,376 medical physician assistant records in California.
All 3,376 in California → Every provider in Santa Fe Springs → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Sandy BautistaSanta Fe Springs, CA 906701467235432
- Cristina CabralSanta Fe Springs, CA 906701881432805
- Laura CarcamoSanta Fe Springs, CA 906701528809787
- Marie Caserio, PHYSICIAN ASSISTANTSanta Fe Springs, CA 906701265565725
- Joanna FernandezSanta Fe Springs, CA 906701689338725
- Ayisha FloresSanta Fe Springs, CA 906701568281459
- Daniel GuzmanSanta Fe Springs, CA 906701316604028
- Siria HernandezSanta Fe Springs, CA 906701831905421
Common questions
What is Michael Meriwether Riley, P.A.'s NPI number?
Michael Meriwether Riley, P.A.'s National Provider Identifier (NPI) is 1306093174, issued on Aug 25, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Michael Meriwether Riley, P.A. located?
The NPPES record lists a practice address at 11817 East Telegraph RD, Santa Fe Springs, CA, 90670. Phone: (562) 949-9328. Providers update this record themselves, so call before visiting.
How can I verify Michael Meriwether Riley, P.A.'s license?
NPPES lists California license number PA12751, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Michael Meriwether Riley, P.A. prescribe under Medicare Part D?
In 2024, Michael Meriwether Riley, P.A. had 167 Medicare Part D claims for 97 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.