NPPES file of Aug 9, 2026

Stacey K. Matsuura, M.D.

Family Medicine Physician · Torrance, CA

Stacey K. Matsuura, M.D. is a family medicine physician with a practice address in Torrance, California, and NPI 1538111927, issued on May 16, 2006. Check the license (California G38258, 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
1538111927
Name
Stacey K. Matsuura
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
G38258 CA
Self-reported in NPPES; status is on the state search
Practice location
21311 Madrona Ave, Torrance, CA 90503
Phone
(310) 792-4400
Enumerated
May 16, 2006
Record last updated
Apr 19, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(310) 542-5805
Medicare enrollment
Enrolled (PECOS I20070717000739); accepts Medicare assignment
Medical or professional school
University Of California, Davis School Of Medicine, 1977
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 21311 Madrona Ave

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

  1. Michael Borovay, M.D.Internal Medicine Physician1174575476
  2. Anh Dao Chung, D.O.Family Medicine Physician1295787638
  3. June Lee, D.O.Family Medicine Physician1699089268
  4. Paul Murata, M.D.Family Medicine Physician1053363499
  5. Laura Shingleton, DOFamily Medicine Physician1770045569
  6. Hubert Sung, M.D.Family Medicine Physician1861777633

Verify Stacey K. Matsuura in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G38258    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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2.1 times the Medicare Part D claims of the average family medicine physician in 2024

7,393 Medicare Part D claims for 658 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 115 claims were for opioids.

  1. Stacey Matsuura7,393
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium748 claims
  2. Amlodipine Besylate456 claims
  3. Losartan Potassium272 claims
  4. Metformin Hcl221 claims
  5. Tamsulosin Hcl221 claims
  6. Lisinopril215 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: $20.84

1 payment: food and beverage; the largest payer was Medtronic, 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. Stacey Matsuura$20.84
  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. Providence Medical InstituteGlendale, CA

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

Stacey K. Matsuura among 17,133 family medicine physician records in California

Stacey K. Matsuura, 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
  • Graduated1977 · median 2005 among the 10,652 with a school on file
  • Record last updated2021 · 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. Modupe Aiyegbusi, M.D.Torrance, CA 905031710088349
  2. John Annable, M.D.Torrance, CA 905031790790475
  3. Nimra Chaudhri, M.D.Torrance, CA 905031063699148
  4. Anh Dao Chung, D.O.Torrance, CA 905031295787638
  5. Daniel Dodson, D.O.Torrance, CA 905031962677385
  6. Mary Jo Donahue, M.D.Torrance, CA 905031326090705
  7. Eduardo Godoy, MDTorrance, CA 905031659305852
  8. Ricardo Jimenez-Kimble, MDTorrance, CA 905031194985200

Common questions

What is Stacey K. Matsuura, M.D.'s NPI number?

Stacey K. Matsuura, M.D.'s National Provider Identifier (NPI) is 1538111927, issued on May 16, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Stacey K. Matsuura, M.D. located?

The NPPES record lists a practice address at 21311 Madrona Ave, Torrance, CA, 90503. Phone: (310) 792-4400. Providers update this record themselves, so call before visiting.

How can I verify Stacey K. Matsuura, M.D.'s license?

NPPES lists California license number G38258, 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 Stacey K. Matsuura, M.D. prescribe under Medicare Part D?

In 2024, Stacey K. Matsuura, M.D. had 7,393 Medicare Part D claims for 658 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.