Tamar Marietta Seiver, MD
Psychiatry Physician · Corte Madera, CA
Tamar Marietta Seiver, MD is a psychiatry physician with a practice address in Corte Madera, California, and NPI 1306062740, issued on Apr 17, 2007. Check the license (California A66165, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tamar Marietta Seiver
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A66165 CA
Self-reported in NPPES; status is on the state search - Practice location
- 21 Tamal Vista Blvd, Corte Madera, CA 94925
- Phone
- (415) 945-7946
- Enumerated
- Apr 17, 2007
- Record last updated
- Dec 16, 2011 (not updated in 15 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 21 Tamal Vista Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Tamar Marietta Seiver in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A66165Check 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 psychiatry physician in 2024
80 Medicare Part D claims for 14 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Mirtazapine20 claims
- Escitalopram Oxalate16 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.
Tamar Marietta Seiver among 8,673 psychiatry physician records in California
Tamar Marietta Seiver, MD is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 33% of them.
- NPI issued2007 · 33% of these records are older, 48% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2011 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
16 psychiatry physician records list a practice address in Corte Madera
They are 16 of the 365 NPPES records with a practice address in Corte Madera, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Corte Madera → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Scott Barshack, M.D.Corte Madera, CA 949251962502948
- Omri Berger, M.D.Corte Madera, CA 949251639351687
- Madison Buchanan, MDCorte Madera, CA 949251679993083
- Charles Fleckles, MDCorte Madera, CA 949251396753232
- Nazineh Huff, MDCorte Madera, CA 949251255522264
- Patricia Jones, MDCorte Madera, CA 949251750405577
- Judith Keins, M.D.Corte Madera, CA 949251083821912
- Arnold Knepfer, M.D.Corte Madera, CA 949251134117435
Common questions
What is Tamar Marietta Seiver, MD's NPI number?
Tamar Marietta Seiver, MD's National Provider Identifier (NPI) is 1306062740, issued on Apr 17, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Tamar Marietta Seiver, MD located?
The NPPES record lists a practice address at 21 Tamal Vista Blvd, Corte Madera, CA, 94925. Phone: (415) 945-7946. Providers update this record themselves, so call before visiting.
How can I verify Tamar Marietta Seiver, MD's license?
NPPES lists California license number A66165, 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 Tamar Marietta Seiver, MD prescribe under Medicare Part D?
In 2024, Tamar Marietta Seiver, MD had 80 Medicare Part D claims for 14 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.