Stephanie Von Fischer Seiki, M.D.
Internal Medicine Physician · San Francisco, CA
Stephanie Von Fischer Seiki, M.D. is an internal medicine physician with a practice address in San Francisco, California, and NPI 1063684132, issued on Mar 29, 2008. Check the license (California A124172, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stephanie Von Fischer Seiki
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A124172 CA
Self-reported in NPPES; status is on the state search - Practice location
- 450 Stanyan St, San Francisco, CA 94117
- Phone
- (415) 750-5909
- Enumerated
- Mar 29, 2008
- Record last updated
- Feb 11, 2022
- Fax
- (415) 750-5910
- Medicare enrollment
- Enrolled (PECOS I20130807000075); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 2008
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 450 Stanyan St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nadine Antebi, PTNeurology Physical Therapist1962373753
Verify Stephanie Von Fischer Seiki in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A124172Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average internal medicine physician in 2024
419 Medicare Part D claims for 143 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 11 claims were for opioids.
Most prescribed
- Cefpodoxime Proxetil33 claims
- Furosemide33 claims
- Atorvastatin Calcium20 claims
- Metoprolol Tartrate13 claims
- Prednisone13 claims
- Losartan Potassium11 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 one group practice
- Permanente Medical Group IncRedwood City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephanie Von Fischer Seiki among 17,696 internal medicine physician records in California
Stephanie Von Fischer Seiki, 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 2008, is newer than 56% of them.
- NPI issued2008 · 56% of these records are older, 40% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2008 · median 2004 among the 11,065 with a school on file
- Record last updated2022 · 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
- Pedro Aceves-Casillas, M.D.San Francisco, CA 941171144252396
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- Robert BrodySan Francisco, CA 941171801815600
- Kwok Chan, M.D.San Francisco, CA 941171063413714
- Diana Hilbert, M.D.San Francisco, CA 941171386642551
- William Kell, M.DSan Francisco, CA 941171528094547
- Kenneth Maybury, M.D.San Francisco, CA 941171295733459
Common questions
What is Stephanie Von Fischer Seiki, M.D.'s NPI number?
Stephanie Von Fischer Seiki, M.D.'s National Provider Identifier (NPI) is 1063684132, issued on Mar 29, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Stephanie Von Fischer Seiki, M.D. located?
The NPPES record lists a practice address at 450 Stanyan St, San Francisco, CA, 94117. Phone: (415) 750-5909. Providers update this record themselves, so call before visiting.
How can I verify Stephanie Von Fischer Seiki, M.D.'s license?
NPPES lists California license number A124172, 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 Von Fischer Seiki, M.D. prescribe under Medicare Part D?
In 2024, Stephanie Von Fischer Seiki, M.D. had 419 Medicare Part D claims for 143 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.