Mohammad Reza Hajighasemi-Ossareh, MD
Neurology Physician · Westminster, CA
Mohammad Reza Hajighasemi-Ossareh, MD is a neurology physician with a practice address in Westminster, California, and NPI 1144683137, issued on Mar 29, 2016. Check the license (California A150719, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mohammad Reza Hajighasemi-Ossareh
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License numbers
- A150719 CA
63148 AZ
TPME1293 FL
88488 GA
55605 KY
and 2 more
Self-reported in NPPES; status is on the state search - Practice location
- 200 Hospital Cir, Westminster, CA 92683
- Phone
- (657) 666-7700
- Enumerated
- Mar 29, 2016
- Record last updated
- Feb 13, 2026
- Medicare enrollment
- Enrolled (PECOS I20200513001018); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 2,339 in California → Look up another NPI →
Also registered at 200 Hospital Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christopher Barretto, M.D.Physical Medicine & Rehabilitation Physician1093879397
- Beoyli Choi, FNPFamily Nurse Practitioner1245079284
- Jenna EstradaLicensed Vocational Nurse1013402437
- Andrew Givner, M.D.Emergency Medicine Physician1891808622
- Mila Jimenez, OTR/LOccupational Therapist1457062168
- Simrat Kaur, PHARMDPharmacist1134008634
Verify Mohammad Reza Hajighasemi-Ossareh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A150719Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 3 group practices
- Memorialcare Medical FoundationFountain Valley, CA
- Novant Health Medical Group, LLCWinston Salem, NC
- Summit Neurology IncHuntington Beach, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mohammad Reza Hajighasemi-Ossareh among 2,339 neurology physician records in California
Mohammad Reza Hajighasemi-Ossareh, MD is one of 2,339 neurology physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 78% of them.
- NPI issued2016 · 78% of these records are older, 19% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2016 · median 2006 among the 1,628 with a school on file
- Record last updated2026 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in California
There are 2,339 neurology physician records in California.
All 2,339 in California → Every provider in Westminster → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Boniface Onubah, M.D.Westminster, CA 926831013131390
- Forough Ghavami Shirehjini, DOCoto De Caza, CA 926791013143619
- Reza Kanani, M.D.Laguna Niguel, CA 926771609134352
- Richard Selby, M.D.Laguna Niguel, CA 926771003114059
- Michael Cummings, MDMission Viejo, CA 926911538151493
- Parshaw Dorriz, MDMission Viejo, CA 926911972940625
- Stephen Jenkins, M.D.Mission Viejo, CA 926911881619807
- Mahmoud Kreidiie, M.D.Mission Viejo, CA 926911265531396
Common questions
What is Mohammad Reza Hajighasemi-Ossareh, MD's NPI number?
Mohammad Reza Hajighasemi-Ossareh, MD's National Provider Identifier (NPI) is 1144683137, issued on Mar 29, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Mohammad Reza Hajighasemi-Ossareh, MD located?
The NPPES record lists a practice address at 200 Hospital Cir, Westminster, CA, 92683. Phone: (657) 666-7700. Providers update this record themselves, so call before visiting.
How can I verify Mohammad Reza Hajighasemi-Ossareh, MD's license?
NPPES lists California license number A150719, 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.
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.