NPPES file of Aug 9, 2026

Tu-Lan Dinh Nguyen, MD

Psychiatry Physician · Houston, TX

Tu-Lan Dinh Nguyen, MD is a psychiatry physician with a practice address in Houston, Texas, and NPI 1639319205, issued on Feb 23, 2009. Check the license (Texas N1403, 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
1639319205
Name
Tu-Lan Dinh Nguyen
Credential
MD
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
N1403 TX
Self-reported in NPPES; status is on the state search
Practice location
1300 Moursund St, Houston, TX 77030
Phone
(713) 500-2700
Enumerated
Feb 23, 2009
Record last updated
Feb 23, 2009 (not updated in 17 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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Also registered at 1300 Moursund St

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

  1. Jeffrey Barr, M.D.Psychiatry Physician1548598402
  2. Patricia Butler, M.D.Psychiatry Physician1174557185
  3. Jary Lesser, M.D.Geriatric Psychiatry Physician1093733214
  4. Camille Lloyd, PH.D.Clinical Psychologist1386678399
  5. Katherine Loveland, PH.D.Clinical Neuropsychologist1982622106
  6. Carol Maxwell, LCSWClinical Social Worker1467470716

Verify Tu-Lan Dinh Nguyen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license N1403
    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

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59% fewer Medicare Part D claims than the average psychiatry physician in 2024

407 Medicare Part D claims for 42 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.

  1. Tu-Lan Nguyen407
  2. Specialty average1,000

Most prescribed

  1. Quetiapine Fumarate36 claims
  2. Alprazolam32 claims
  3. Duloxetine Hcl29 claims
  4. Escitalopram Oxalate22 claims
  5. Risperidone20 claims
  6. Lorazepam18 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: $1,396.00

70 payments; by number, the most common kind was food and beverage; the largest payer was Neurocrine Biosciences, Inc. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Tu-Lan Nguyen$1,396.00
  2. Specialty average$4,954.93

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Tu-Lan Dinh Nguyen among 3,318 psychiatry physician records in Texas

Tu-Lan Dinh Nguyen, MD is one of 3,318 psychiatry physician records with a practice address in Texas. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 54% of them.

  • NPI issued2009 · 54% of these records are older, 44% newer
  • In a Medicare fileYes · 72% of these records are
  • In the CMS Doctors and Clinicians fileNo · 45% of these records are
  • Record last updated2009 · 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 2084P0800X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Psychiatry Physician providers in Texas

There are 3,318 psychiatry physician records in Texas.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Patricia Butler, M.D.Houston, TX 770301174557185
  2. Emilio Cardona, M.D.Houston, TX 770301467456897
  3. Reeba Chacko, M.D.Houston, TX 770301881650786
  4. Inna D'Empaire, MDHouston, TX 770301710904511
  5. Elizabeth David, M.D.Houston, TX 770301184642423
  6. Herbert Dorfan, M.D.Houston, TX 770301346245636
  7. Laura Marsh, M.D.Houston, TX 770301619903770
  8. Anu Matorin, M.D.Houston, TX 770301780618710

Common questions

What is Tu-Lan Dinh Nguyen, MD's NPI number?

Tu-Lan Dinh Nguyen, MD's National Provider Identifier (NPI) is 1639319205, issued on Feb 23, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Tu-Lan Dinh Nguyen, MD located?

The NPPES record lists a practice address at 1300 Moursund St, Houston, TX, 77030. Phone: (713) 500-2700. Providers update this record themselves, so call before visiting.

How can I verify Tu-Lan Dinh Nguyen, MD's license?

NPPES lists Texas license number N1403, 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 Tu-Lan Dinh Nguyen, MD prescribe under Medicare Part D?

In 2024, Tu-Lan Dinh Nguyen, MD had 407 Medicare Part D claims for 42 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.