Stephen W. Coates, MD
NPI 1487635066ActiveIndividual· Internal Medicine, Gastroenterology· San Angelo, TX
Internal Medicine, Gastroenterology (MD) in San Angelo, Texas, trained at University of Texas Southwestern Medical School at Dallas (class of 1998). Their prescriptions cost Medicare Part D more than their services did: $1,592,288 for 3,412 claims, against $144,929 paid for services in 2024. Abbvie Inc. was the largest of 10 companies reporting payments in 2025, $1,315 in all, mostly food and beverage.
Overview
| NPI | 1487635066 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 9, 2005 |
| Last updated in NPPES | Sep 25, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | K8887 | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 829 |
|---|---|
| Services billed | 1,499 across 44 procedure codes |
| Paid by Medicare | $144,929 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,412 · 6,543 30-day fills |
|---|---|
| Patients | 1,140 |
| Total drug cost | $1,592,288 |
| Generic share | 77% of claims |
Education and affiliations
| Medical school | University of Texas Southwestern Medical School at Dallas |
|---|---|
| Graduation year | 1998 |
| Medicare specialty | Gastroenterology |
Medical group
- Shannon ClinicSan Angelo, TX · 559 clinicians
Hospital affiliations
- Heart of Texas Memorial HospitalBrady, TX
- Lillian M Hudspeth Memorial HospitalSonora, TX
- Shannon Medical CenterSan Angelo, TX
Industry payments (Open Payments)
- 2025$1,315 · 67 payments from 10 companies
- 2024$1,343 · 81 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $678.99 | 42 |
| Phathom Pharmaceuticals, Inc. | $147.05 | 3 |
| Madrigal Pharmaceuticals | $140.59 | 6 |
| Takeda Pharmaceuticals U.S.A., Inc. | $131.08 | 5 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $75.41 | 4 |
What the 2025 payments were for
- Food and Beverage$1,315 · 67 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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- 1477510295