NPPES file of Aug 9, 2026

Reza Tadayon-Nejad, M.D., PH.D

Psychiatry Physician · Paramount, CA

Reza Tadayon-Nejad, M.D., PH.D is a psychiatry physician with a practice address in Paramount, California, and NPI 1326329012, issued on Sep 8, 2011. Check the license (California A137573, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1326329012
Name
Reza Tadayon-Nejad
Credential
M.D., PH.D
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
A137573 CA
Self-reported in NPPES; status is on the state search
Practice location
8835 Vans St, Paramount, CA 90723
Phone
(562) 633-5111
Enumerated
Sep 8, 2011
Record last updated
Dec 23, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20160630002254); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 8835 Vans St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jessica Buenrostro, RNRegistered Nurse1336908318
  2. Jasmin CastellanosStudent in an Organized Health Care Education/Training Program1487444311
  3. Hana ChoeSocial Worker1215808068
  4. Belinda CopelandClinical Social Worker1366313355
  5. Rezarta Davis, PH.D.Professional Counselor1275398703
  6. Joycelyn Galita, LVNLicensed Vocational Nurse1982599296

Verify Reza Tadayon-Nejad in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A137573    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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The practice group's MIPS final score for 2023 (Medicare payment program): 91.7 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.

  1. Qualityout of 100 · 30% of the final score70.8
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. UC RegentsLos Angeles, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Psychiatry Physician providers in California

There are 8,673 psychiatry physician records in California.

All 8,673 in California → Every provider in Paramount →

Other psychiatry physician records in California

  1. Nancy Aaen, MDNapa, CA1609816669
  2. Criselda Abad-Santos, M.D.Woodland Hills, CA1760461826
  3. Mekabiz Abaian, MDSan Bernardino, CA1891090163
  4. Brenda Abarca, MDTorrance, CA1407485527
  5. Pilar Abascal, M.D.Los Angeles, CA1730528191
  6. Michele Abbasi, M.D.Westlake Village, CA1093940330
  7. Zohaib AbbasiMartinez, CA1013392224
  8. Sandy Abdelkedous, MDFresno, CA1306093109
  9. Nancy Abdelmalak, M.D.Elk Grove, CA1912137498
  10. Ezzat Abdelmalek, M.DDana Point, CA1992828826

Common questions

What is Reza Tadayon-Nejad, M.D., PH.D's NPI number?

Reza Tadayon-Nejad, M.D., PH.D's National Provider Identifier (NPI) is 1326329012, issued on Sep 8, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Reza Tadayon-Nejad, M.D., PH.D located?

The NPPES record lists a practice address at 8835 Vans St, Paramount, CA, 90723. Phone: (562) 633-5111. Providers update this record themselves, so call before visiting.

How can I verify Reza Tadayon-Nejad, M.D., PH.D's license?

NPPES lists California license number A137573, 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 Reza Tadayon-Nejad, M.D., PH.D's MIPS final score?

The 2023 MIPS final score is 91.7 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.