NPPES file of Aug 9, 2026

Thomas Thanh Bui, M.D.

Family Medicine Physician · Fountain Valley, CA

Thomas Thanh Bui, M.D. is a family medicine physician with a practice address in Fountain Valley, California, and NPI 1326361585, issued on Mar 2, 2010. Check the license (California A105271, 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
1326361585
Name
Thomas Thanh Bui
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A105271 CA
Self-reported in NPPES; status is on the state search
Practice location
17031 Ward St, Fountain Valley, CA 92708
Phone
(714) 586-7150
Enumerated
Mar 2, 2010
Record last updated
Dec 15, 2011 (not updated in 15 years: call before relying on the address or phone)
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 Thomas Thanh Bui in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A105271
    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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70% fewer Medicare Part D claims than the average family medicine physician in 2024

1,074 Medicare Part D claims for 122 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.

  1. Thomas Bui1,074
  2. Specialty average3,544

Most prescribed

  1. Levothyroxine Sodium71 claims
  2. Furosemide63 claims
  3. Amlodipine Besylate62 claims
  4. Potassium Chloride41 claims
  5. Tamsulosin Hcl32 claims
  6. Januvia29 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.

Thomas Thanh Bui among 17,133 family medicine physician records in California

Thomas Thanh Bui, 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 2010, is newer than 60% of them.

  • NPI issued2010 · 60% of these records are older, 37% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileNo · 62% of these records are
  • Record last updated2011 · 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).

51 family medicine physician records list a practice address in Fountain Valley

They are 51 of the 2,190 NPPES records with a practice address in Fountain Valley, and 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. Arfa Babaknia, M.D.Fountain Valley, CA 927081205826849
  2. Hung-Chuan Cheng, M.D.Fountain Valley, CA 927081053389023
  3. Brian Coyne, M.D.Fountain Valley, CA 927081457306334
  4. Nasrin Damoui, MDFountain Valley, CA 927081841295326
  5. Robert Devereaux, MDFountain Valley, CA 927081043264781
  6. David Dunckel, MDFountain Valley, CA 927081518957794
  7. Edgar Fernandez, DOFountain Valley, CA 927081033157235
  8. Jo Lieberman Pan, MDFountain Valley, CA 927081598756090

Common questions

What is Thomas Thanh Bui, M.D.'s NPI number?

Thomas Thanh Bui, M.D.'s National Provider Identifier (NPI) is 1326361585, issued on Mar 2, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Thomas Thanh Bui, M.D. located?

The NPPES record lists a practice address at 17031 Ward St, Fountain Valley, CA, 92708. Phone: (714) 586-7150. Providers update this record themselves, so call before visiting.

How can I verify Thomas Thanh Bui, M.D.'s license?

NPPES lists California license number A105271, 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 Thomas Thanh Bui, M.D. prescribe under Medicare Part D?

In 2024, Thomas Thanh Bui, M.D. had 1,074 Medicare Part D claims for 122 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.