Tamar Segev, D.O.
Obstetrics & Gynecology Physician · Petaluma, CA
Tamar Segev, D.O. is an obstetrics & gynecology physician with a practice address in Petaluma, California, and NPI 1972902971, issued on Aug 15, 2014. Check the license (California 20A14091, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tamar Segev
- Credential
- D.O.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 20A14091 CA
Self-reported in NPPES; status is on the state search - Practice location
- 335 S Mcdowell Blvd, Petaluma, CA 94954
- Phone
- (415) 461-7800
- Enumerated
- Aug 15, 2014
- Record last updated
- Apr 16, 2026
- Fax
- (415) 461-8619
- Medicare enrollment
- Enrolled (PECOS I20180410002248); may accept Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 335 S Mcdowell Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Tamar Segev in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A14091Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
262 Medicare Part D claims for 129 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Estradiol75 claims
- Estradiol (Twice Weekly)26 claims
- Progesterone23 claims
- Yuvafem22 claims
- Estring14 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: $161.35
5 payments; by number, the most common kind was food and beverage; the largest payer was Sumitomo Pharma America, Inc. The 21,429 providers of this specialty with any payment received $1,030.61 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
- Regents Univ OF California UcsfSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tamar Segev among 5,088 obstetrics & gynecology physician records in California
Tamar Segev, D.O. is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 80% of them.
- NPI issued2014 · 80% of these records are older, 17% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2013 · median 2004 among the 2,700 with a school on file
- Record last updated2026 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Petaluma → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Caroline Barnhart, MDPetaluma, CA 949541437618774
- Julie Clark, MDPetaluma, CA 949541346216389
- Kellie Corcoran, MDPetaluma, CA 949541760817258
- Laurie Dibble, MDPetaluma, CA 949541487738555
- Anthony Kosinski, M.D.Petaluma, CA 949541588656631
- Elmira Manoucheri, M.D.Petaluma, CA 949541942475710
- Bonni Massa, M.D.Petaluma, CA 949541508933607
- Judith McCarthy, MDPetaluma, CA 949541770667750
Common questions
What is Tamar Segev, D.O.'s NPI number?
Tamar Segev, D.O.'s National Provider Identifier (NPI) is 1972902971, issued on Aug 15, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Tamar Segev, D.O. located?
The NPPES record lists a practice address at 335 S Mcdowell Blvd, Petaluma, CA, 94954. Phone: (415) 461-7800. Providers update this record themselves, so call before visiting.
How can I verify Tamar Segev, D.O.'s license?
NPPES lists California license number 20A14091, 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 Segev, D.O. prescribe under Medicare Part D?
In 2024, Tamar Segev, D.O. had 262 Medicare Part D claims for 129 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.