Shahryar Masouem, M.D.
Obstetrics & Gynecology Physician · Irvine, CA
Shahryar Masouem, M.D. is an obstetrics & gynecology physician with a practice address in Irvine, California, and NPI 1811166655, issued on Feb 26, 2008. Check the license (California A101561, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Shahryar Masouem
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- A101561 CA
2026-02749 NC
Self-reported in NPPES; status is on the state search - Practice location
- 4790 Irvine Blvd Ste 105-337, Irvine, CA 92620
- Phone
- (714) 512-2440
- Enumerated
- Feb 26, 2008
- Record last updated
- Jun 17, 2026
- Fax
- (949) 264-8221
- Medicaid ID
- 1811166655 CA
- Medicare enrollment
- Enrolled (PECOS I20080327000455); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Verify Shahryar Masouem in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A101561Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
21 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.
Bills Medicare through one group practice
- Magella Medical Group IncFountain Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Shahryar Masouem among 5,088 obstetrics & gynecology physician records in California
Shahryar Masouem, 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 2008, is newer than 62% of them.
- NPI issued2008 · 62% of these records are older, 34% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2004 · 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 Irvine → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Jessica Chun, MDIrvine, CA 926181023392321
- Tiffany Dote, MDIrvine, CA 926181013292358
- Rebecca Mervis, MDIrvine, CA 926181891087094
- Jennifer Neeper, M.D.Irvine, CA 926181982953733
- Jenny Nordin, D.O.Irvine, CA 926181386895266
- Cecilia Perez, M.D.Irvine, CA 926181083906556
- Rachael Postlethwait, MDIrvine, CA 926181518461888
- Noah Rodriguez, MDIrvine, CA 926181053498980
Common questions
What is Shahryar Masouem, M.D.'s NPI number?
Shahryar Masouem, M.D.'s National Provider Identifier (NPI) is 1811166655, issued on Feb 26, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Shahryar Masouem, M.D. located?
The NPPES record lists a practice address at 4790 Irvine Blvd Ste 105-337, Irvine, CA, 92620. Phone: (714) 512-2440. Providers update this record themselves, so call before visiting.
How can I verify Shahryar Masouem, M.D.'s license?
NPPES lists California license number A101561, 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 Shahryar Masouem, M.D. prescribe under Medicare Part D?
In 2024, Shahryar Masouem, M.D. had 21 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.