Sadaf Samizay, M.D.
Obstetrics & Gynecology Physician · San Ramon, CA
Sadaf Samizay, M.D. is an obstetrics & gynecology physician with a practice address in San Ramon, California, and NPI 1124439260, issued on May 12, 2014. Check the license (California A149875, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sadaf Samizay
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A149875 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5601 Norris Canyon RD, San Ramon, CA 94583
- Phone
- (925) 587-4808
- Enumerated
- May 12, 2014
- Record last updated
- Feb 20, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20181211003734); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 5601 Norris Canyon RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lauren Alexander, RN, MSN, ANP-BCGeneral Practice Registered Nurse1689866998
- Richard Ash, MDPediatrics Physician1366445298
- Tsuling Chang, M.D.Dermatology Physician1154495240
- Sandy Chhiv, FNPFamily Nurse Practitioner1487102794
- Bradford Flagg, M.D.Family Medicine Physician1346323086
- Jayaram Hariharan, M.D.Family Medicine Physician1790004638
Verify Sadaf Samizay in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A149875Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 91 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Alameda Health SystemOakland, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sadaf Samizay among 5,088 obstetrics & gynecology physician records in California
Sadaf Samizay, M.D. 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
- Graduated2014 · median 2004 among the 2,700 with a school on file
- Record last updated2020 · 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 San Ramon → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Ravi Agarwal, MDSan Ramon, CA 945831710331236
- Curtis Appel, MDSan Ramon, CA 945831831279314
- Emil Eyvazzadeh, MDSan Ramon, CA 945831881702462
- Renee Hilliard, M.D.San Ramon, CA 945831245265065
- Leroy Leabman, MDSan Ramon, CA 945831598041360
- Mark Lollar, MDSan Ramon, CA 945831124119623
- Helen Matthews, M.D.San Ramon, CA 945831013015627
- Cassandra MellingerSan Ramon, CA 945831811647803
Common questions
What is Sadaf Samizay, M.D.'s NPI number?
Sadaf Samizay, M.D.'s National Provider Identifier (NPI) is 1124439260, issued on May 12, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Sadaf Samizay, M.D. located?
The NPPES record lists a practice address at 5601 Norris Canyon RD, San Ramon, CA, 94583. Phone: (925) 587-4808. Providers update this record themselves, so call before visiting.
How can I verify Sadaf Samizay, M.D.'s license?
NPPES lists California license number A149875, 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.
What is Sadaf Samizay, M.D.'s MIPS final score?
The 2023 MIPS final score is 91 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.