Owen Maat, MD
NPI 1295780609 · Gastroenterology Physician · Harlingen, TX
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Owen Maat, MD is a Gastroenterology Physician provider in Harlingen, TX (NPI 1295780609).
Provider details
- NPI number
- 1295780609
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- J5609 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
584 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 117 | $74 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 99 | $86 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 75 | $160 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 65 | $83 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 65 | $121 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 112 | 57 |
| Omeprazole | 77 | 41 |
| Esomeprazole Magnesium | 53 | 36 |
| Sucralfate | 19 | 13 |
| Linaclotidebrand: Linzess | 16 | 11 |
| Metoclopramide Hcl | 14 | — |
| Dicyclomine Hcl | 14 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$185 across 4 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 305 Lorenaly DrBrownsville, TX 78526-4333Phone: (956) 365-4400Fax: (956) 365-4111
Registry dates
- Enumerated
- 2006-05-23
- Last updated
- 2023-11-14
- Certified
- 2023-11-14
Frequently asked questions
- What is Owen Maat's NPI number?
- Owen Maat's National Provider Identifier (NPI) is 1295780609, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Owen Maat's specialty?
- Owen Maat is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Owen Maat located?
- Owen Maat's practice location on file with NPPES is 512 Victoria Ln Ste 2, Harlingen, TX 78550-3227.
- What is Owen Maat's phone number?
- The practice phone number listed in the NPPES registry for Owen Maat is (956) 365-4400.
- Does Owen Maat accept Medicare?
- Owen Maat is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Owen Maat's NPI active?
- Yes — Owen Maat's NPI (1295780609) is active in the NPPES registry as of the last update on 2023-11-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.