NPPES file of Aug 9, 2026

Justin Lantz, M.D.

Internal Medicine Physician · Deer Park, TX

Justin Lantz, M.D. is an internal medicine physician with a practice address in Deer Park, Texas, and NPI 1740690866, issued on Apr 28, 2014. Check the license (Texas R6431, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1740690866
Name
Justin Lantz
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
R6431 TX
Self-reported in NPPES; status is on the state search
Practice location
3430 Center St, Deer Park, TX 77536
Phone
(832) 548-5000
Enumerated
Apr 28, 2014
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 3430 Center St

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

  1. Tywanna Chisley, M.D.Pediatrics Physician1699736397
  2. John Dunnington, MDObstetrics & Gynecology Physician1316295116
  3. Natalia Ivanova, DOFamily Medicine Physician1942640123
  4. Neelima Kale, MDFamily Medicine Physician1487693818
  5. Marissa Mireles, LCSWClinical Social Worker1144942657
  6. Annette Mouton, FNP-CFamily Nurse Practitioner1447764923

Verify Justin Lantz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license R6431    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.

74% fewer Medicare Part D claims than the average internal medicine physician in 2024

817 Medicare Part D claims for 64 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 13 claims were for opioids.

  1. Justin Lantz817
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium78 claims
  2. Amlodipine Besylate39 claims
  3. Losartan Potassium38 claims
  4. Hydrochlorothiazide37 claims
  5. Lisinopril32 claims
  6. Omeprazole30 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.

Bills Medicare through one group practice

  1. Legacy Community Health Services, IncDeer Park, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

2 internal medicine physician records list a practice address in Deer Park

They are 2 of the 195 NPPES records with a practice address in Deer Park, and 9,175 internal medicine physician records in Texas.

All 2 in Deer Park → All 9,175 in Texas → Every provider in Deer Park →

Other internal medicine physician records in Texas

  1. Muhammad A. Sattar, MDDallas, TX1760465553
  2. Gayatri Aaluri, MDGalveston, TX1821928508
  3. Anunaya AashishDenton, TX1134246374
  4. Queenie Ann Abad, M.D.San Antonio, TX1174979785
  5. Fuad Abaleka, M.DLubbock, TX1861925596
  6. Carol Abalihi, M.D.El Paso, TX1326136243
  7. Oliverio Abarca Guzman, MDHarlingen, TX1346972940
  8. Obinna Abaribe, M.DMansfield, TX1457704355
  9. Enyinnaya Abarikwu, MDTyler, TX1174788178
  10. Sulaiman Abawi, D.O.Frisco, TX1780845255

Common questions

What is Justin Lantz, M.D.'s NPI number?

Justin Lantz, M.D.'s National Provider Identifier (NPI) is 1740690866, issued on Apr 28, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Justin Lantz, M.D. located?

The NPPES record lists a practice address at 3430 Center St, Deer Park, TX, 77536. Phone: (832) 548-5000. Providers update this record themselves, so call before visiting.

How can I verify Justin Lantz, M.D.'s license?

NPPES lists Texas license number R6431, 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 Justin Lantz, M.D. prescribe under Medicare Part D?

In 2024, Justin Lantz, M.D. had 817 Medicare Part D claims for 64 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), loaded Aug 27, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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) 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 27, 2026.