NPPES file of Aug 9, 2026

Matthew Nguyen

Family Medicine Physician · Santa Maria, CA

Matthew Nguyen is a family medicine physician with a practice address in Santa Maria, California, and NPI 1356802896, issued on Mar 27, 2019. Check the license (California 20A19893, 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
1356802896
Name
Matthew Nguyen
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
20A19893 CA
Self-reported in NPPES; status is on the state search
Practice location
1400 E Church St, Santa Maria, CA 93454
Phone
(805) 739-3374
Enumerated
Mar 27, 2019
Record last updated
Nov 3, 2022
Medicare enrollment
Enrolled (PECOS I20221026001161); 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 1400 E Church St

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

  1. Elena Agafonova, M.D.Internal Medicine Physician1558757666
  2. Alyse Andrade, RN IBCLCLactation Consultant (Registered Nurse)1104647403
  3. Steven Andrews, PAPhysician Assistant1083352397
  4. Andrea ArthoferStudent in an Organized Health Care Education/Training Program1225772973
  5. Hannah Barrows, PA-CPhysician Assistant1528747128
  6. Nader Batal, DOFamily Medicine Physician1740923135

Verify Matthew Nguyen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A19893
    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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78% fewer Medicare Part D claims than the average family medicine physician in 2024

768 Medicare Part D claims for 138 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 30 claims were for opioids.

  1. Matthew Nguyen768
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium55 claims
  2. Amlodipine Besylate47 claims
  3. Rosuvastatin Calcium37 claims
  4. Lisinopril31 claims
  5. Gabapentin28 claims
  6. Losartan Potassium20 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.

Bills Medicare through one group practice

  1. Sutter Bay Medical FoundationSunnyvale, CA

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

Matthew Nguyen among 17,133 family medicine physician records in California

Matthew Nguyen 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 2019, is newer than 85% of them.

  • NPI issued2019 · 85% of these records are older, 12% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2019 · median 2005 among the 10,652 with a school on file
  • Record last updated2022 · 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).

79 family medicine physician records list a practice address in Santa Maria

They are 79 of the 3,047 NPPES records with a practice address in Santa Maria, and 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. Jesse Arellano, MDSanta Maria, CA 934541285659284
  2. Thomas Dawes, MDSanta Maria, CA 934541386668473
  3. Kamlesh Desai, M.D.Santa Maria, CA 934541336137850
  4. Brian Desmond, M.D.Santa Maria, CA 934541972591865
  5. Eric Levy, M.D.Santa Maria, CA 934541891779021
  6. Richard McClaflin, MDSanta Maria, CA 934541912939075
  7. Brian Miyagishima, MDSanta Maria, CA 934541801870662
  8. Mary Jane Morash, MDSanta Maria, CA 934541154351195

Common questions

What is Matthew Nguyen's NPI number?

Matthew Nguyen's National Provider Identifier (NPI) is 1356802896, issued on Mar 27, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Matthew Nguyen located?

The NPPES record lists a practice address at 1400 E Church St, Santa Maria, CA, 93454. Phone: (805) 739-3374. Providers update this record themselves, so call before visiting.

How can I verify Matthew Nguyen's license?

NPPES lists California license number 20A19893, 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 Matthew Nguyen prescribe under Medicare Part D?

In 2024, Matthew Nguyen had 768 Medicare Part D claims for 138 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.