Toan D. Nguyen, MD
Internal Medicine Physician · Houston, TX
Toan D. Nguyen, MD is an internal medicine physician with a practice address in Houston, Texas, and NPI 1295118776, issued on Jul 2, 2015. Check the license (Texas S1472, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Toan D. Nguyen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- S1472 TX
,D-45359 IA
30725 NE
7453 NE
Self-reported in NPPES; status is on the state search - Practice location
- 6550 Fannin St, Houston, TX 77030
- Phone
- (281) 726-8656
- Enumerated
- Jul 2, 2015
- Record last updated
- May 1, 2025
- Fax
- (713) 793-7064
- Medicare enrollment
- Enrolled (PECOS I20190906000372); accepts Medicare assignment
- Medical or professional school
- Texas A & M University System, Hsc, College Of Medicine, 2015
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 6550 Fannin St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bincy Abraham, MDGastroenterology Physician1578767166
- Horacio Adrogue, MDNephrology Physician1508958000
- Talha Akram, MDStudent in an Organized Health Care Education/Training Program1346180577
- Mahmoud Al Rifai, M.D.Cardiovascular Disease Physician1922456219
- Jaden Aland, MDStudent in an Organized Health Care Education/Training Program1114868213
- James Albright, MDPediatric Otolaryngology Physician1548255805
Verify Toan D. Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license S1472Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average internal medicine physician in 2024
359 Medicare Part D claims for 153 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 18 claims were for opioids.
Most prescribed
- Furosemide17 claims
- Prednisone17 claims
- Eliquis15 claims
- Hydrocodone-Acetaminophen12 claims
- Metoprolol Succinate12 claims
- Torsemide12 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: $44.80
1 payment: food and beverage; the largest payer was Ethicon US, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Houston Methodist Specialty PhysiciansHouston, TX
- Tmh Physician Associates PLLCSugar Land, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Toan D. Nguyen among 9,175 internal medicine physician records in Texas
Toan D. Nguyen, MD 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 2015, is newer than 71% of them.
- NPI issued2015 · 71% of these records are older, 26% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2015 · median 2004 among the 6,088 with a school on file
- Record last updated2025 · 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.
All 9,175 in Texas → Every provider in Houston → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ketti Awad, MDHouston, TX 770301740284710
- Parikshet Babber, MDHouston, TX 770301114915816
- James Baker, MDHouston, TX 770301477549566
- Ana Blackmon, M.D.Houston, TX 770301962402446
- Maria Cruz-Carreras, MDHouston, TX 770301376533893
- Marina George, MDHouston, TX 770301780680009
- Barry Goodfriend, MDHouston, TX 770301588666218
- Betty Halpern, MDHouston, TX 770301942292685
Common questions
What is Toan D. Nguyen, MD's NPI number?
Toan D. Nguyen, MD's National Provider Identifier (NPI) is 1295118776, issued on Jul 2, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Toan D. Nguyen, MD located?
The NPPES record lists a practice address at 6550 Fannin St, Houston, TX, 77030. Phone: (281) 726-8656. Providers update this record themselves, so call before visiting.
How can I verify Toan D. Nguyen, MD's license?
NPPES lists Texas license number S1472, 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 Toan D. Nguyen, MD prescribe under Medicare Part D?
In 2024, Toan D. Nguyen, MD had 359 Medicare Part D claims for 153 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.