Trung Hieu Nguyen, MD
Internal Medicine Physician · Marshall, TX
Trung Hieu Nguyen, MD is an internal medicine physician with a practice address in Marshall, Texas, and NPI 1932307766, issued on Jul 3, 2007. Check the license (Texas N6537, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Trung Hieu Nguyen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- N6537 TX
9406784 KS
Self-reported in NPPES; status is on the state search - Practice location
- 811 S Washington Ave, Marshall, TX 75670
- Phone
- (903) 315-1488
- Enumerated
- Jul 3, 2007
- Record last updated
- Jan 2, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (903) 315-1656
- Medicare enrollment
- Enrolled (PECOS I20200514000069); accepts Medicare assignment
- Medical or professional school
- Brody School Of Medicine At East Carolina University, 2007
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 811 S Washington Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Salima Abdul Waheed, MDInternal Medicine Physician1073700126
- Mark Adams, CRNACertified Registered Nurse Anesthetist1730171158
- Donna Alzaga, M.D.Internal Medicine Physician1609069251
- Kendall Chambellan, PAPhysician Assistant1861498768
- Tiffany Egbe, MDInternal Medicine Physician1205914231
- Richard Johnson, CRNACertified Registered Nurse Anesthetist1811945926
Verify Trung Hieu Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license N6537Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average internal medicine physician in 2024
597 Medicare Part D claims for 167 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 68 claims were for opioids.
Most prescribed
- Atorvastatin Calcium46 claims
- Hydrocodone-Acetaminophen42 claims
- Gabapentin25 claims
- Losartan Potassium22 claims
- Metoprolol Tartrate22 claims
- Amlodipine Besylate18 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: $73.38
4 payments; by number, the most common kind was food and beverage; the largest payer was Bayer Healthcare Pharmaceuticals Inc. 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 one group practice
- North Texas Physician Services, PLLCLongview, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Trung Hieu Nguyen among 9,175 internal medicine physician records in Texas
Trung Hieu 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 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 50% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2007 · median 2004 among the 6,088 with a school on file
- Record last updated2014 · 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).
14 internal medicine physician records list a practice address in Marshall
They are 14 of the 253 NPPES records with a practice address in Marshall, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in Marshall → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Salima Abdul Waheed, MDMarshall, TX 756701073700126
- Valarie Allman, M.D.Marshall, TX 756701689675753
- Donna Alzaga, M.D.Marshall, TX 756701609069251
- Kimberly Barbolla, DOMarshall, TX 756701437132081
- Steven Crayton, MDMarshall, TX 756701083693097
- Tiffany Egbe, MDMarshall, TX 756701205914231
- James Facello, D.O.Marshall, TX 756701508867680
- Michael Leath, MDMarshall, TX 756701831197524
Common questions
What is Trung Hieu Nguyen, MD's NPI number?
Trung Hieu Nguyen, MD's National Provider Identifier (NPI) is 1932307766, issued on Jul 3, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Trung Hieu Nguyen, MD located?
The NPPES record lists a practice address at 811 S Washington Ave, Marshall, TX, 75670. Phone: (903) 315-1488. Providers update this record themselves, so call before visiting.
How can I verify Trung Hieu Nguyen, MD's license?
NPPES lists Texas license number N6537, 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 Trung Hieu Nguyen, MD prescribe under Medicare Part D?
In 2024, Trung Hieu Nguyen, MD had 597 Medicare Part D claims for 167 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.