NPPES file of Aug 9, 2026

Tung Dinh Mai, DO

Internal Medicine Physician · Houston, TX

Tung Dinh Mai, DO is an internal medicine physician with a practice address in Houston, Texas, and NPI 1659797348, issued on Mar 5, 2014. Check the license (Texas S5977, as entered in NPPES) on the Texas Medical Board; 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
1659797348
Name
Tung Dinh Mai
Credential
DO
Primary taxonomy
Internal Medicine Physician 207R00000X
License numbers
S5977 TX
2017010608 MO
Self-reported in NPPES; status is on the state search
Practice location
8278 Bellaire Blvd Ste A, Houston, TX 77036
Phone
(713) 272-8858
Enumerated
Mar 5, 2014
Record last updated
Dec 14, 2023
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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Also registered at 8278 Bellaire Blvd Ste A

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

  1. Thanh Do, M.D.Internal Medicine Physician1083663033
  2. Jacqueline Le-Guevara, M.D.Family Medicine Physician1417242637
  3. Darwin Nguyen, DOInternal Medicine Physician1356044895
  4. Thanh-Thao Truong, M.D.Family Medicine Physician1609225572

Verify Tung Dinh Mai in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license S5977
    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 Texas 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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97% fewer Medicare Part D claims than the average internal medicine physician in 2024

87 Medicare Part D claims for 15 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.

  1. Tung Mai87
  2. Specialty average3,176

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.

Tung Dinh Mai among 9,175 internal medicine physician records in Texas

Tung Dinh Mai, DO is one of 9,175 internal medicine physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 69% of them.

  • NPI issued2014 · 69% of these records are older, 29% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileNo · 66% of these records are
  • Record last updated2023 · 49% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

1,488 internal medicine physician records list a practice address in Houston

They are 1,488 of the 61,221 NPPES records with a practice address in Houston, and 9,175 internal medicine physician records in Texas.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Samuel Chen, MD, PH.D.Houston, TX 770361396803474
  2. Thanh Do, M.D.Houston, TX 770361083663033
  3. Donald Gibson, M.D.Houston, TX 770361235174210
  4. Giao Hoang, M.D.Houston, TX 770361801825286
  5. Thomas Le, M.D.Houston, TX 770361508877259
  6. Min Liang, M.D.Houston, TX 770361295053684
  7. Ashutosh Niraj, MDHouston, TX 770361407032634
  8. Kalu Ogbonnaya, M.D., P.A.Houston, TX 770361396737730

Common questions

What is Tung Dinh Mai, DO's NPI number?

Tung Dinh Mai, DO's National Provider Identifier (NPI) is 1659797348, issued on Mar 5, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Tung Dinh Mai, DO located?

The NPPES record lists a practice address at 8278 Bellaire Blvd Ste A, Houston, TX, 77036. Phone: (713) 272-8858. Providers update this record themselves, so call before visiting.

How can I verify Tung Dinh Mai, DO's license?

NPPES lists Texas license number S5977, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Tung Dinh Mai, DO prescribe under Medicare Part D?

In 2024, Tung Dinh Mai, DO had 87 Medicare Part D claims for 15 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.