NPPES file of Aug 9, 2026

Pooya Mobasseri, D.O.

Family Medicine Physician · Westlake Village, CA

Pooya Mobasseri, D.O. is a family medicine physician with a practice address in Westlake Village, California, and NPI 1356670657, issued on Dec 15, 2009. Check the license (California 20A 10982, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1356670657
Name
Pooya Mobasseri
Credential
D.O.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
20A 10982 CA
Self-reported in NPPES; status is on the state search
Practice location
3366 E Thousand Oaks Blvd Ste 200, Westlake Village, CA 91362
Phone
(805) 496-1500
Enumerated
Dec 15, 2009
Record last updated
Sep 12, 2024
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Pooya Mobasseri in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A 10982
    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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67% more Medicare Part D claims than the average family medicine physician in 2024

5,903 Medicare Part D claims for 834 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.

  1. Pooya Mobasseri5,903
  2. Specialty average3,544

Most prescribed

  1. Levothyroxine Sodium486 claims
  2. Tamsulosin Hcl299 claims
  3. Amlodipine Besylate296 claims
  4. Atorvastatin Calcium191 claims
  5. Losartan Potassium183 claims
  6. Eliquis171 claims

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.

Pooya Mobasseri among 17,133 family medicine physician records in California

Pooya Mobasseri, D.O. is one of 17,133 family medicine 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 2009, is newer than 58% of them.

  • NPI issued2009 · 58% of these records are older, 40% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileNo · 62% of these records are
  • Record last updated2024 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

19 family medicine physician records list a practice address in Westlake Village

They are 19 of the 1,397 NPPES records with a practice address in Westlake Village, and 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. Ali Chahine, MDWestlake Village, CA 913621013545961
  2. Jeffrey Klein, MDThousand Oaks, CA 913621972508646
  3. Davin Lundquist, M.D.Westlake Village, CA 913621780642306
  4. Alireza Raboubi, M.D.Westlake Village, CA 913621821201013
  5. Olayinka Warritay, M.D.Westlake Village, CA 913621447661996
  6. Chuie Yuen, M.D.Westlake Village, CA 913621447516471
  7. Kosha Doshi, DOThousand Oaks, CA 913611588124903
  8. Alicia Guevara, M.D.Thousand Oaks, CA 913611629295217

Common questions

What is Pooya Mobasseri, D.O.'s NPI number?

Pooya Mobasseri, D.O.'s National Provider Identifier (NPI) is 1356670657, issued on Dec 15, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Pooya Mobasseri, D.O. located?

The NPPES record lists a practice address at 3366 E Thousand Oaks Blvd Ste 200, Westlake Village, CA, 91362. Phone: (805) 496-1500. Providers update this record themselves, so call before visiting.

How can I verify Pooya Mobasseri, D.O.'s license?

NPPES lists California license number 20A 10982, 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 Pooya Mobasseri, D.O. prescribe under Medicare Part D?

In 2024, Pooya Mobasseri, D.O. had 5,903 Medicare Part D claims for 834 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.