Owen S. Maat, MD
Gastroenterology Physician · Harlingen, TX
Owen S. Maat, MD is a gastroenterology physician with a practice address in Harlingen, Texas, and NPI 1295780609, issued on May 23, 2006. Check the license (Texas J5609, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Owen S. Maat
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- J5609 TX
Self-reported in NPPES; status is on the state search - Practice location
- 512 Victoria LN Ste 2, Harlingen, TX 78550
- Phone
- (956) 365-4400
- Enumerated
- May 23, 2006
- Record last updated
- Nov 14, 2023
- Fax
- (956) 365-4111
- Medicare enrollment
- Enrolled (PECOS I20041006000031); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical Branch At Galveston, 1992
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,478 in Texas → Look up another NPI →
Also registered at 512 Victoria LN Ste 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ana Aguayo, PAMedical Physician Assistant1952980690
- Oscar Alvarez, MDGastroenterology Physician1376565838
- Lisa Briones, PAMedical Physician Assistant1477296960
- Alyssa Dawson, CRNACertified Registered Nurse Anesthetist1154803039
- Miriam De Leon, PA-CMedical Physician Assistant1396206983
- Tania Garcia, NPFamily Nurse Practitioner1265547251
Verify Owen S. Maat in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license J5609Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% fewer Medicare Part D claims than the average gastroenterology physician in 2024
434 Medicare Part D claims for 221 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Pantoprazole Sodium112 claims
- Omeprazole77 claims
- Esomeprazole Magnesium53 claims
- Sucralfate19 claims
- Linzess16 claims
- Dicyclomine Hcl14 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: $184.65
4 payments; by number, the most common kind was food and beverage; the largest payer was Phathom Pharmaceuticals, Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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
- Gastroenterology Consultants OF South Texas, PLLCHarlingen, TX
- Hood Medical GroupGranbury, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Owen S. Maat among 1,478 gastroenterology physician records in Texas
Owen S. Maat, MD is one of 1,478 gastroenterology physician records with a practice address in Texas. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 51% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated1992 · median 2003 among the 1,175 with a school on file
- Record last updated2023 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Texas
There are 1,478 gastroenterology physician records in Texas.
All 1,478 in Texas → Every provider in Harlingen → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Oscar Alvarez, MDHarlingen, TX 785501376565838
- Wayne Green, M.D.Harlingen, TX 785501114906278
- Nicole Grigg Gutierrez, MDHarlingen, TX 785501750516035
- Oral James, M.D.Harlingen, TX 785501235178799
- Nghia Nguyen, DOHarlingen, TX 785501538725890
- Nolan Perez, MDHarlingen, TX 785501184726986
- Jason Phillips, M.D.Harlingen, TX 785501760442685
- Sandeep Samuel, MDHarlingen, TX 785501174822647
Common questions
What is Owen S. Maat, MD's NPI number?
Owen S. Maat, MD's National Provider Identifier (NPI) is 1295780609, issued on May 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Owen S. Maat, MD located?
The NPPES record lists a practice address at 512 Victoria LN Ste 2, Harlingen, TX, 78550. Phone: (956) 365-4400. Providers update this record themselves, so call before visiting.
How can I verify Owen S. Maat, MD's license?
NPPES lists Texas license number J5609, 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 Owen S. Maat, MD prescribe under Medicare Part D?
In 2024, Owen S. Maat, MD had 434 Medicare Part D claims for 221 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.