Marilyn Mae McGowan, MD
Internal Medicine Physician · San Luis Obispo, CA
Marilyn Mae McGowan, MD is an internal medicine physician with a practice address in San Luis Obispo, California, and NPI 1417586835, issued on Apr 7, 2020. Check the license (California A193400, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Marilyn Mae McGowan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A193400 CA
Self-reported in NPPES; status is on the state search - Practice location
- 892 Aerovista PL Ste 210, San Luis Obispo, CA 93401
- Phone
- (805) 549-8023
- Enumerated
- Apr 7, 2020
- Record last updated
- Aug 27, 2024
- Medicare enrollment
- Enrolled (PECOS I20240730000659); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 2020
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 892 Aerovista PL Ste 210
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Phoebe Chen, M.D.Internal Medicine Physician1528163870
- Hayley ClevelandInfectious Disease Physician1811428998
- Virginia Hernandez, M.D.Family Medicine Physician1477746816
- Thomas Nguyen, MDInternal Medicine Physician1336272871
- Deepa Ragesh Panikkath, MDRheumatology Physician1821436684
- Amanda ShrewsburyGenetic Counselor (M.S.)1013609718
Verify Marilyn Mae McGowan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A193400Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average internal medicine physician in 2024
347 Medicare Part D claims for 170 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate17 claims
- Atorvastatin Calcium16 claims
- Rosuvastatin Calcium15 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 2 group practices
- David B. HammerTempleton, CA
- The Regents OF The University OF CaliforniaSanta Monica, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
41 internal medicine physician records list a practice address in San Luis Obispo
They are 41 of the 3,403 NPPES records with a practice address in San Luis Obispo, and 17,696 internal medicine physician records in California.
All 41 in San Luis Obispo → All 17,696 in California → Every provider in San Luis Obispo →
Other internal medicine physician records in California
- Jacob Aaron, MDSan Francisco, CA1407202518
- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Marilyn Mae McGowan, MD's NPI number?
Marilyn Mae McGowan, MD's National Provider Identifier (NPI) is 1417586835, issued on Apr 7, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Marilyn Mae McGowan, MD located?
The NPPES record lists a practice address at 892 Aerovista PL Ste 210, San Luis Obispo, CA, 93401. Phone: (805) 549-8023. Providers update this record themselves, so call before visiting.
How can I verify Marilyn Mae McGowan, MD's license?
NPPES lists California license number A193400, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marilyn Mae McGowan, MD prescribe under Medicare Part D?
In 2024, Marilyn Mae McGowan, MD had 347 Medicare Part D claims for 170 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.