NPPES file of Aug 9, 2026

Thien Phu Nguyen, DO

Sleep Medicine (Family Medicine) Physician · Torrance, CA

Thien Phu Nguyen, DO is a sleep medicine (family medicine) physician with a practice address in Torrance, California, and NPI 1245855949, issued on Jun 9, 2020. Check the license (California 20A20727, 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
1245855949
Name
Thien Phu Nguyen
Credential
DO
Primary taxonomy
Sleep Medicine (Family Medicine) Physician 207QS1201X
License number
20A20727 CA
Self-reported in NPPES; status is on the state search
Practice location
3701 Skypark Dr Ste 200, Torrance, CA 90505
Phone
(310) 378-8900
Enumerated
Jun 9, 2020
Record last updated
Aug 5, 2024
Fax
(310) 791-0789
Medicare enrollment
Enrolled (PECOS I20240618003104); accepts Medicare assignment
Medical or professional school
Lake Erie Col Of Osteo Med At Seton Hill Univ, 2020
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 3701 Skypark Dr Ste 200

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

  1. Daniel Ho, MDInfectious Disease Physician1245867613
  2. Nikita JambulingamSleep Medicine (Internal Medicine) Physician1942797121
  3. Nour Khouzam, MDInfectious Disease Physician1427309285
  4. Aditya Kotecha, M.D.Pulmonary Disease Physician1811375371
  5. Yana Kryvokhyzha, DOAllergy & Immunology Physician1548753312
  6. Cole Liberator, M. D.Pulmonary Disease Physician1912261736

Verify Thien Phu 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 20A20727
    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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83% fewer Medicare Part D claims than the average sleep medicine (family medicine) physician in 2024

125 Medicare Part D claims for 19 beneficiaries, against an average of 718 among the 211 providers of this specialty who prescribed in Part D.

  1. Thien Nguyen125
  2. Specialty average718

Most prescribed

  1. Tamsulosin Hcl15 claims
  2. Potassium Chloride13 claims
  3. Finasteride12 claims
  4. Fluoxetine Hcl12 claims
  5. Benztropine Mesylate11 claims
  6. Lisinopril11 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: $567.26

2 payments; by number, the most common kind was food and beverage; the largest payer was Inspire Medical Systems, Inc. The 171 providers of this specialty with any payment received $4,214.24 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Thien Nguyen$567.26
  2. Specialty average$4,214.24

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. The Regents OF The University OF CaliforniaLos Angeles, CA

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

Thien Phu Nguyen among 35 sleep medicine (family medicine) physician records in California

Thien Phu Nguyen, DO is one of 35 sleep medicine (family medicine) physician records with a practice address in California. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 83% of them.

  • NPI issued2020 · 83% of these records are older, 14% newer
  • In a Medicare fileYes · 86% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated2020 · median 2013 among the 24 with a school on file
  • Record last updated2024 · 17% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QS1201X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Sleep Medicine (Family Medicine) Physician providers in California

There are 35 sleep medicine (family medicine) physician records in California.

The 8 sleep medicine (family medicine) physician records with the nearest ZIP codes

  1. Patrick SamonesSanta Monica, CA 904041922701788
  2. Tue Thi Duc Te, M.D.Los Angeles, CA 900951821524133
  3. Joshua Roland, M.D.Los Angeles, CA 900171922411453
  4. Kevin Nguyen, MDWoodland Hills, CA 913671932548310
  5. Harrison Hasanuddin, D.O.Monterey Park, CA 917541790165785
  6. Kinjal Madhav, M.D.Carlsbad, CA 920111124385182
  7. Christina Finch, MDSan Diego, CA 921031598255325
  8. Andrew Gamache, DDSSan Diego, CA 921031043317720

Common questions

What is Thien Phu Nguyen, DO's NPI number?

Thien Phu Nguyen, DO's National Provider Identifier (NPI) is 1245855949, issued on Jun 9, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Thien Phu Nguyen, DO located?

The NPPES record lists a practice address at 3701 Skypark Dr Ste 200, Torrance, CA, 90505. Phone: (310) 378-8900. Providers update this record themselves, so call before visiting.

How can I verify Thien Phu Nguyen, DO's license?

NPPES lists California license number 20A20727, 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 Thien Phu Nguyen, DO prescribe under Medicare Part D?

In 2024, Thien Phu Nguyen, DO had 125 Medicare Part D claims for 19 beneficiaries; the average among sleep medicine (family medicine) physician prescribers was 718. 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.