NPPES file of Aug 9, 2026

Brian D. Borsook, M.D.

Family Medicine Physician · Torrance, CA

Brian D. Borsook, M.D. is a family medicine physician with a practice address in Torrance, California, and NPI 1437165370, issued on Jul 31, 2006. Check the license (California A63206, 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
1437165370
Name
Brian D. Borsook
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A63206 CA
Self-reported in NPPES; status is on the state search
Practice location
2200 Sepulveda Blvd, Torrance, CA 90501
Phone
(310) 326-9167
Enumerated
Jul 31, 2006
Record last updated
Feb 11, 2026
Medicaid ID
00A632060 CA
Medicare enrollment
Enrolled (PECOS I20040714000992); accepts Medicare assignment
Medical or professional school
Saint Louis University School Of Medicine, 1996
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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8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →

Also registered at 2200 Sepulveda Blvd

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

  1. Nasim Golzar, M.D.Family Medicine Physician1568406866
  2. Alese HernandezPrimary Care Nurse Practitioner1164039012
  3. Susana Herrera Ovalle, M.D.Family Medicine Physician1437375268
  4. Fe Inocentes, M.D.Family Medicine Physician1851306542
  5. John Lim, MDInternal Medicine Physician1316329782
  6. Michelle Mohageg, DOFamily Medicine Physician1134288798

Verify Brian D. Borsook in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A63206    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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53% more Medicare Part D claims than the average family medicine physician in 2024

5,410 Medicare Part D claims for 352 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 191 claims were for opioids.

  1. Brian Borsook5,410
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium365 claims
  2. Rosuvastatin Calcium270 claims
  3. Levothyroxine Sodium203 claims
  4. Amlodipine Besylate189 claims
  5. Lisinopril170 claims
  6. Olmesartan Medoxomil163 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.

Industry payments in 2024: $154.43

2 payments; by number, the most common kind was food and beverage; the largest payer was Esperion Therapeutics, Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Brian Borsook$154.43
  2. Specialty average$902.55

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Healthcare Partners Affiliates Medical GroupAnaheim, CA

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

Brian D. Borsook among 17,133 family medicine physician records in California

Brian D. Borsook, M.D. 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 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 59% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated1996 · median 2005 among the 10,652 with a school on file
  • Record last updated2026 · 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).

114 family medicine physician records list a practice address in Torrance

They are 114 of the 8,901 NPPES records with a practice address in Torrance, and 17,133 family medicine physician records in California.

All 17,133 in California → Every provider in Torrance → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. Ludmila Afonicheva, MDTorrance, CA 905011932159530
  2. Nasim Golzar, M.D.Torrance, CA 905011568406866
  3. Homer Hernandez, M.D.Torrance, CA 905011760457576
  4. Susana Herrera Ovalle, M.D.Torrance, CA 905011437375268
  5. Fe Inocentes, M.D.Torrance, CA 905011851306542
  6. Michelle Mohageg, DOTorrance, CA 905011134288798
  7. Jonathan Neal, D.OTorrance, CA 905011073628434
  8. Jeffery Ostriker, M.D.Torrance, CA 905011669482303

Common questions

What is Brian D. Borsook, M.D.'s NPI number?

Brian D. Borsook, M.D.'s National Provider Identifier (NPI) is 1437165370, issued on Jul 31, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Brian D. Borsook, M.D. located?

The NPPES record lists a practice address at 2200 Sepulveda Blvd, Torrance, CA, 90501. Phone: (310) 326-9167. Providers update this record themselves, so call before visiting.

How can I verify Brian D. Borsook, M.D.'s license?

NPPES lists California license number A63206, 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 Brian D. Borsook, M.D. prescribe under Medicare Part D?

In 2024, Brian D. Borsook, M.D. had 5,410 Medicare Part D claims for 352 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.

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.