Jay S.h. Masserman, M.D.
Obstetrics & Gynecology Physician · Santa Ana, CA
Jay S.h. Masserman, M.D. is an obstetrics & gynecology physician with a practice address in Santa Ana, California, and NPI 1598743510, issued on Jan 9, 2006. Check the license (California G33687, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jay S.h. Masserman
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- G33687 CA
Self-reported in NPPES; status is on the state search - Practice location
- 800 N Main St, Santa Ana, CA 92701
- Phone
- (657) 282-6355
- Enumerated
- Jan 9, 2006
- Record last updated
- Mar 14, 2023
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 800 N Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Refat AhsanStudent in an Organized Health Care Education/Training Program1790623676
- Lynette Anderson, DOFamily Medicine Physician1164674503
- Joanne Azer, D.O.Family Medicine Physician1275822850
- Jacob Beene, MDStudent in an Organized Health Care Education/Training Program1477491363
- Karen Brandeis, F.N.P.Family Nurse Practitioner1336426840
- Karen Bui, MDStudent in an Organized Health Care Education/Training Program1124604954
Verify Jay S.h. Masserman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G33687Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
11 Medicare Part D claims, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
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.
Jay S.h. Masserman among 5,088 obstetrics & gynecology physician records in California
Jay S.h. Masserman, 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2023 · 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 Santa Ana → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Sergio Levenzon, MDSanta Ana, CA 927011982642377
- Debora Sedaghat, DOSanta Ana, CA 927011578619243
- Witoon Krailas, MDSanta Ana, CA 927031265432207
- Emad Hashemi, M.D.Santa Ana, CA 927041568492759
- Hubert Jeng, M.DSanta Ana, CA 927041134182850
- George Kallins, M.D.Santa Ana, CA 927041578756581
- Jenny Lee, M.D.Santa Ana, CA 927041801057278
- Jaime Ludmir, M.DSanta Ana, CA 927041265539712
Common questions
What is Jay S.h. Masserman, M.D.'s NPI number?
Jay S.h. Masserman, M.D.'s National Provider Identifier (NPI) is 1598743510, issued on Jan 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jay S.h. Masserman, M.D. located?
The NPPES record lists a practice address at 800 N Main St, Santa Ana, CA, 92701. Phone: (657) 282-6355. Providers update this record themselves, so call before visiting.
How can I verify Jay S.h. Masserman, M.D.'s license?
NPPES lists California license number G33687, 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 Jay S.h. Masserman, M.D. prescribe under Medicare Part D?
In 2024, Jay S.h. Masserman, M.D. had 11 Medicare Part D claims; 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.