OWEN S MAAT (MD) – Gastroenterology Physician, NPI 1295780609
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,498 GASTROENTEROLOGY in TX
Provider Addresses for OWEN S MAAT (MD)
305 Lorenaly Dr
Brownsville, TX 785264333
Phone: (956) 365-4400
Fax: (956) 365-4111
Type: Location
512 VICTORIA LN STE 2
HARLINGEN, TX 785503227
Phone: (956) 365-4400
Fax: (956) 365-4111
Type: Mailing
Bellaire Boulevard, Bellaire, Bossier City, Bossier Parish, Louisiana, 71112, United States
STE. 325
BELLAIRE, TX 774014526
Phone: (713) 668-9800
Fax: (713) 668-9819
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 51 Open Payments records for all available years, with a total value of $2,438.
Total Amount is formed as General ($2,438) + Research ($0) + Ownership ($0) = $2,438.
Last reported payment date: 2024-11-13 • Largest payer in this snapshot: Boston Scientific Corporation ($1,765).
Total Amount
$2,438
General + Research + Ownership
Payments
51
Total payment records
General Amount
$2,438
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-13
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Boston Scientific Corporation | $1,765 |
| ABBVIE INC. | $313 |
| Phathom Pharmaceuticals, Inc. | $125 |
| Regeneron Healthcare Solutions, Inc. | $67 |
| Merck Sharp & Dohme LLC | $64 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2004-10-06
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20041006000031 | I | Gastroenterology | TX | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 193 | 186 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 154 | 90 | $0 |
| 99231 | Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 99 | 66 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 78 | 68 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 74 | 73 | $0 |
Insurance plans in this area (ZIP 78526)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | TX | |
| Nurse Practitioner | TX | |
| G A S T R O E N T E R O L O G Y | TX | |
| Physician Assistant | TX | |
| Internal Medicine | TX | |
| Colorectal Surgery (Proctology), General Surgery | TX | |
| Gastroenterology, Internal Medicine | TX | |
| G A S T R O E N T E R O L O G Y | TX | |
| Nurse Practitioner | TX | |
| Nurse Practitioner | TX |
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