Alisa Diane Gean-Gersch, MD
Diagnostic Radiology Physician · San Francisco, CA
Alisa Diane Gean-Gersch, MD is a diagnostic radiology physician with a practice address in San Francisco, California, and NPI 1942246343, issued on Jun 22, 2006. Check the license (California G66034, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alisa Diane Gean-Gersch
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- G66034 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1001 Potrero Ave, San Francisco, CA 94110
- Phone
- (415) 206-5871
- Enumerated
- Jun 22, 2006
- Record last updated
- Jul 21, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (415) 206-4004
- Medicaid ID
- 00G660340 CA
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 4,500 in California → Look up another NPI →
Also registered at 1001 Potrero Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elizabeth Abbs, M.D.Internal Medicine Physician1295269983
- Atokena AbeStudent in an Organized Health Care Education/Training Program1043130149
- Mary Ann AbilleRegistered Nurse1699155804
- Nasrin Aboudamous, FNPFamily Nurse Practitioner1699579912
- Elizabeth AdvientoRegistered Nurse1124968987
- Rocio Agraz-Lara, RN, PHNRegistered Nurse1003075995
Verify Alisa Diane Gean-Gersch in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G66034Check 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 diagnostic radiology physician in 2024
15 Medicare Part D claims, against an average of 51 among the 2,711 providers of this specialty who prescribed in Part D.
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.
Alisa Diane Gean-Gersch among 4,500 diagnostic radiology physician records in California
Alisa Diane Gean-Gersch, MD is one of 4,500 diagnostic radiology physician records with a practice address in California. 74% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2008 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in California
There are 4,500 diagnostic radiology physician records in California.
All 4,500 in California → Every provider in San Francisco → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Shinn-Huey ChouSan Francisco, CA 941101710208210
- Pierre-Alain Cohen, MDSan Francisco, CA 941101508810557
- Brett Elicker, MDSan Francisco, CA 941101891748034
- Bethany Eubanks, MDSan Francisco, CA 941101487610655
- Helen Galvin, MDSan Francisco, CA 941101861434268
- Terry Lynch, MDSan Francisco, CA 941101285689935
- Peter McClure, M.D.San Francisco, CA 941101710106000
- Jared Narvid, M.D.San Francisco, CA 941101023205879
Common questions
What is Alisa Diane Gean-Gersch, MD's NPI number?
Alisa Diane Gean-Gersch, MD's National Provider Identifier (NPI) is 1942246343, issued on Jun 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Alisa Diane Gean-Gersch, MD located?
The NPPES record lists a practice address at 1001 Potrero Ave, San Francisco, CA, 94110. Phone: (415) 206-5871. Providers update this record themselves, so call before visiting.
How can I verify Alisa Diane Gean-Gersch, MD's license?
NPPES lists California license number G66034, 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 Alisa Diane Gean-Gersch, MD prescribe under Medicare Part D?
In 2024, Alisa Diane Gean-Gersch, MD had 15 Medicare Part D claims; the average among diagnostic radiology physician prescribers was 51. 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.