Stephanie Ann Cordonnier, MD
Geriatric Medicine (Internal Medicine) Physician · San Francisco, CA
Stephanie Ann Cordonnier, MD is a geriatric medicine (internal medicine) physician with a practice address in San Francisco, California, and NPI 1588230809, issued on May 27, 2021. Check the license (California A198072, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stephanie Ann Cordonnier
- Credential
- MD
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License numbers
- A198072 CA
LP05346 RI
Self-reported in NPPES; status is on the state search - Practice location
- 3575 Geary Blvd FL 1, San Francisco, CA 94118
- Phone
- (415) 353-4900
- Enumerated
- May 27, 2021
- Record last updated
- Dec 3, 2025
- Medicare enrollment
- Enrolled (PECOS I20251218002562); accepts Medicare assignment
- Medical or professional school
- Toledo Medical College, 2021
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 532 in California → Look up another NPI →
Also registered at 3575 Geary Blvd FL 1
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carolyn Welty, M.D.Geriatric Medicine (Internal Medicine) Physician1669403853
Verify Stephanie Ann Cordonnier in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A198072Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024
356 Medicare Part D claims for 42 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate25 claims
- Atorvastatin Calcium25 claims
- Losartan Potassium19 claims
- Gabapentin15 claims
- Omeprazole12 claims
- Furosemide11 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
- Ucsf Medical Group Business ServicesBerkeley, CA
- University OF California San FranciscoSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephanie Ann Cordonnier among 532 geriatric medicine (internal medicine) physician records in California
Stephanie Ann Cordonnier, MD is one of 532 geriatric medicine (internal medicine) physician records with a practice address in California. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 95% of them.
- NPI issued2021 · 95% of these records are older, 3% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 51% of these records are
- Graduated2021 · median 1999 among the 271 with a school on file
- Record last updated2025 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in California
There are 532 geriatric medicine (internal medicine) physician records in California.
All 532 in California → Every provider in San Francisco → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Pei Chen, MDSan Francisco, CA 941181295054948
- Judy Mamaclay, MDSan Francisco, CA 941181457357618
- Stephanie Rogers, M.D.San Francisco, CA 941181639469877
- Carolyn Welty, M.D.San Francisco, CA 941181669403853
- Leslie Kernisan, M.D.San Francisco, CA 941171215968797
- Namita Kansal, MDSan Francisco, CA 941161184883415
- Helena Katz, MDSan Francisco, CA 941161285774414
- Lydia Lukian, MDSan Francisco, CA 941161932249125
Common questions
What is Stephanie Ann Cordonnier, MD's NPI number?
Stephanie Ann Cordonnier, MD's National Provider Identifier (NPI) is 1588230809, issued on May 27, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Stephanie Ann Cordonnier, MD located?
The NPPES record lists a practice address at 3575 Geary Blvd FL 1, San Francisco, CA, 94118. Phone: (415) 353-4900. Providers update this record themselves, so call before visiting.
How can I verify Stephanie Ann Cordonnier, MD's license?
NPPES lists California license number A198072, 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 Stephanie Ann Cordonnier, MD prescribe under Medicare Part D?
In 2024, Stephanie Ann Cordonnier, MD had 356 Medicare Part D claims for 42 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.