Sylvia Stellmacher, MD
Critical Care Medicine (Internal Medicine) Physician · San Francisco, CA
Sylvia Stellmacher, MD is a critical care medicine (internal medicine) physician with a practice address in San Francisco, California, and NPI 1982233771, issued on Apr 3, 2020. Check the license (California A187260, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sylvia Stellmacher
- Credential
- MD
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- A187260 CA
Self-reported in NPPES; status is on the state search - Practice location
- 513 Parnassus Ave # 111, San Francisco, CA 94143
- Phone
- (154) 760-7354
- Enumerated
- Apr 3, 2020
- Record last updated
- Jun 23, 2023
- Medicare enrollment
- Enrolled (PECOS I20260518001386); may accept Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 2020
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 723 in California → Look up another NPI →
Also registered at 513 Parnassus Ave # 111
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sudhamayi Bhadriraju, M.D.Critical Care Medicine (Internal Medicine) Physician1104116243
- Ernesto Casillas, M.D.Pulmonary Disease Physician1952832354
- Jonathan Liu, MDPulmonary Disease Physician1992281851
- Angela Suen, MDPulmonary Disease Physician1225568595
Verify Sylvia Stellmacher in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A187260Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average critical care medicine (internal medicine) physician in 2024
28 Medicare Part D claims, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D. Brand-name drugs were 89% of 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.
Sylvia Stellmacher among 723 critical care medicine (internal medicine) physician records in California
Sylvia Stellmacher, MD is one of 723 critical care medicine (internal medicine) physician records with a practice address in California. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 97% of them.
- NPI issued2020 · 97% of these records are older, 2% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2020 · median 2005 among the 559 with a school on file
- Record last updated2023 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in California
There are 723 critical care medicine (internal medicine) physician records in California.
All 723 in California → Every provider in San Francisco → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Christopher Barnett, MD, MPHSan Francisco, CA 941431538127717
- Sudhamayi Bhadriraju, M.D.San Francisco, CA 941431104116243
- Mallar Bhattacharya, MDSan Francisco, CA 941431063558757
- Samuel Brusca, M.D.San Francisco, CA 941431174942148
- Jonathan BudzikSan Francisco, CA 941431356632632
- Harold Collard, MDSan Francisco, CA 941431740245380
- Kenneth Fang, M.D.San Francisco, CA 941431760566020
- Yaron Gesthalter, MDSan Francisco, CA 941431013183599
Common questions
What is Sylvia Stellmacher, MD's NPI number?
Sylvia Stellmacher, MD's National Provider Identifier (NPI) is 1982233771, issued on Apr 3, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Sylvia Stellmacher, MD located?
The NPPES record lists a practice address at 513 Parnassus Ave # 111, San Francisco, CA, 94143. Phone: (154) 760-7354. Providers update this record themselves, so call before visiting.
How can I verify Sylvia Stellmacher, MD's license?
NPPES lists California license number A187260, 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 Sylvia Stellmacher, MD prescribe under Medicare Part D?
In 2024, Sylvia Stellmacher, MD had 28 Medicare Part D claims; the average among critical care medicine (internal medicine) physician prescribers was 696. 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.