Demetra Serena Stamm, M.D.
General Practice Physician · San Mateo, CA
Demetra Serena Stamm, M.D. is a general practice physician with a practice address in San Mateo, California, and NPI 1396906269, issued on Jun 23, 2008. Check the license (California A110149, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Demetra Serena Stamm
- Credential
- M.D.
- Primary taxonomy
- General Practice Physician 208D00000X
- License number
- A110149 CA
Self-reported in NPPES; status is on the state search - Practice location
- 222 W 39TH Ave, San Mateo, CA 94403
- Phone
- (916) 955-2809
- Enumerated
- Jun 23, 2008
- Record last updated
- Jan 4, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170105001626); accepts Medicare assignment
- Medical or professional school
- University Of North Carolina At Chapel Hill School Of Medicine, 2008
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 1,956 in California → Look up another NPI →
Also registered at 222 W 39TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Shea AndersonClinical Social Worker1689964991
- Zohra Ansari, MSWClinical Social Worker1326462904
Verify Demetra Serena Stamm in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A110149Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average general practice physician in 2024
295 Medicare Part D claims for 38 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Sertraline Hcl37 claims
- Trazodone Hcl32 claims
- Escitalopram Oxalate19 claims
- Bupropion Xl16 claims
- Lamotrigine16 claims
- Fluoxetine Hcl14 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.
Industry payments in 2024: $405.25
3 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 4,259 providers of this specialty with any payment received $1,273.40 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- County OF San MateoSan Mateo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Demetra Serena Stamm among 1,956 general practice physician records in California
Demetra Serena Stamm, M.D. is one of 1,956 general practice physician records with a practice address in California. 48% 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 50% of them.
- NPI issued2008 · 50% of these records are older, 46% newer
- In a Medicare fileYes · 48% of these records are
- In the CMS Doctors and Clinicians fileYes · 27% of these records are
- Graduated2008 · median 1994 among the 520 with a school on file
- Record last updated2017 · 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 208D00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
General Practice Physician providers in California
There are 1,956 general practice physician records in California.
All 1,956 in California → Every provider in San Mateo → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- Jonathan Chun Ming TsangSan Mateo, CA 944031225563299
- Farah Zaidi, M.D.San Mateo, CA 944031760828990
- Weyman Wong, M.D.Foster City, CA 944041649636523
- Peter Eckman, M.D.Palo Alto, CA 943061467579342
- M Ghorieshi, MD, MPHPalo Alto, CA 943061720307051
- Karen Johnston, MDPalo Alto, CA 943061326518325
- Sarah Ballard, M.D.Alameda, CA 945011316092174
- Andrew Bartuska, MDStanford, CA 943051548919046
Common questions
What is Demetra Serena Stamm, M.D.'s NPI number?
Demetra Serena Stamm, M.D.'s National Provider Identifier (NPI) is 1396906269, issued on Jun 23, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Demetra Serena Stamm, M.D. located?
The NPPES record lists a practice address at 222 W 39TH Ave, San Mateo, CA, 94403. Phone: (916) 955-2809. Providers update this record themselves, so call before visiting.
How can I verify Demetra Serena Stamm, M.D.'s license?
NPPES lists California license number A110149, 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 Demetra Serena Stamm, M.D. prescribe under Medicare Part D?
In 2024, Demetra Serena Stamm, M.D. had 295 Medicare Part D claims for 38 beneficiaries; the average among general practice physician prescribers was 3,030. 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.