Susan Mayo, M.D.
Internal Medicine Physician · San Francisco, CA
Susan Mayo, M.D. is an internal medicine physician with a practice address in San Francisco, California, and NPI 1386696185, issued on May 17, 2006. Check the license (California A63489, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Susan Mayo
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A63489 CA
4301115586 MI
2018016629 MO
52330 SC
R8607 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1 California St Ste 2300, San Francisco, CA 94111
- Phone
- (800) 997-6196
- Enumerated
- May 17, 2006
- Record last updated
- May 8, 2025
- Fax
- (833) 523-9924
- Medicare enrollment
- Enrolled (PECOS I20110520000283); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1 California St Ste 2300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sarah Allen, NP-CFamily Nurse Practitioner1467962621
- Veronica Andis-High, APRNPrimary Care Nurse Practitioner1477941680
- D'Aren ArchieFamily Nurse Practitioner1265924187
- Leena Badhwar, M.D.Internal Medicine Physician1265466874
- Celia Baya, RNRegistered Nurse1609723212
- Jeanna Bender, ARNP-CFamily Nurse Practitioner1598813974
Verify Susan Mayo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A63489Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average internal medicine physician in 2024
530 Medicare Part D claims for 298 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Fluticasone Propionate59 claims
- Cephalexin35 claims
- Albuterol Sulfate Hfa29 claims
- Paxlovid24 claims
- Azelastine Hcl23 claims
- Amoxicillin-Clavulanate Potass20 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
- Doctor ON Demand Professionals OF CaliforniaSan Francisco, CA
- Doctor ON Demand Professionals P CEast Lansing, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Susan Mayo among 17,696 internal medicine physician records in California
Susan Mayo, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1996 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,318 internal medicine physician records list a practice address in San Francisco
They are 1,318 of the 38,143 NPPES records with a practice address in San Francisco, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Francisco → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Leena Badhwar, M.D.San Francisco, CA 941111265466874
- Greg Burrell, M.D.San Francisco, CA 941111699090530
- Wayne Chung, MDSan Francisco, CA 941111669404653
- Andrew Diamond, MD, PHDSan Francisco, CA 941111154347235
- Frank Dumont, MDSan Francisco, CA 941111629063136
- Mark Marin, MDSan Francisco, CA 941111144375668
- Neetu Nebhwani, MDSan Francisco, CA 941111942457908
- Andres Nieto, M.D.San Francisco, CA 941111740342492
Common questions
What is Susan Mayo, M.D.'s NPI number?
Susan Mayo, M.D.'s National Provider Identifier (NPI) is 1386696185, issued on May 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Susan Mayo, M.D. located?
The NPPES record lists a practice address at 1 California St Ste 2300, San Francisco, CA, 94111. Phone: (800) 997-6196. Providers update this record themselves, so call before visiting.
How can I verify Susan Mayo, M.D.'s license?
NPPES lists California license number A63489, 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 Susan Mayo, M.D. prescribe under Medicare Part D?
In 2024, Susan Mayo, M.D. had 530 Medicare Part D claims for 298 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.