Margaret V. Muth, P.A.
Physician Assistant · San Diego, CA
Margaret V. Muth, P.A. is a physician assistant with a practice address in San Diego, California, and NPI 1437169588, issued on Aug 9, 2006. Check the license (California PA12124, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Margaret V. Muth
- Credential
- P.A.
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA12124 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Fir St, San Diego, CA 92101
- Phone
- (619) 446-1511
- Enumerated
- Aug 9, 2006
- Record last updated
- Apr 19, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (619) 557-2770
- Medicare enrollment
- Enrolled (PECOS I20101007000864); accepts Medicare assignment
- Medical or professional school
- University Of Nebraska College Of Medicine, 1987
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 300 Fir St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Colleen Buono, MDEmergency Medicine Physician1467494179
- Ulysses Carino, M.D.Family Medicine Physician1265441596
- Mahshid ChehrehraziPhysical Therapist1073231510
Verify Margaret V. Muth in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA12124Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average physician assistant in 2024
242 Medicare Part D claims for 183 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Doxycycline Hyclate45 claims
- Cephalexin26 claims
- Amoxicillin-Clavulanate Potass16 claims
- Ciprofloxacin Hcl16 claims
- Albuterol Sulfate Hfa15 claims
- Prednisone14 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 73.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Sharp Rees-Stealy Medical Group IncSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret V. Muth among 14,451 physician assistant records in California
Margaret V. Muth, P.A. 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 2006, is newer than 1% of them.
- NPI issued2006 · 1% of these records are older, 87% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1987 · median 2018 among the 7,214 with a school on file
- Record last updated2017 · 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).
747 physician assistant records list a practice address in San Diego
They are 747 of the 52,937 NPPES records with a practice address in San Diego, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in San Diego → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Robyn Bodecker, PA-CSan Diego, CA 921011427067727
- Loretta Contreras, PA-CSan Diego, CA 921011679096341
- Alejandra Diedrich, P.A.San Diego, CA 921011487767539
- Aleksandr Filen, PA-CSan Diego, CA 921011508143769
- Brenda Guerrero, P.A.San Diego, CA 921011750391348
- Tulani Johnson, PA-CSan Diego, CA 921011508049719
- Emily Mangano, PA-CSan Diego, CA 921011952706905
- Anna McKinley, PA-CSan Diego, CA 921011851769368
Common questions
What is Margaret V. Muth, P.A.'s NPI number?
Margaret V. Muth, P.A.'s National Provider Identifier (NPI) is 1437169588, issued on Aug 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Margaret V. Muth, P.A. located?
The NPPES record lists a practice address at 300 Fir St, San Diego, CA, 92101. Phone: (619) 446-1511. Providers update this record themselves, so call before visiting.
How can I verify Margaret V. Muth, P.A.'s license?
NPPES lists California license number PA12124, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Margaret V. Muth, P.A. prescribe under Medicare Part D?
In 2024, Margaret V. Muth, P.A. had 242 Medicare Part D claims for 183 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Margaret V. Muth, P.A.'s MIPS final score?
The 2023 MIPS final score is 73.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.