Sheldon Chaffer II, M.D.
NPI 1598727844ActiveIndividual· Internal Medicine, Nephrology· Gatesville, TX
Internal Medicine, Nephrology (M.D.) in Gatesville, Texas, trained at University of Texas Medical School at Houston (class of 2000). Part D covered 1,545 prescriptions written in 2024, 85% of them generic. Exact Sciences Corporation was the largest of 6 companies reporting payments in 2025, $114.17 in all, mostly food and beverage.
Overview
| NPI | 1598727844 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 3, 2006 |
| Last updated in NPPES | Apr 17, 2023 |
| Certified by provider | Apr 17, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | L3937 | TX |
| Internal Medicine | 207R00000X | L3937 | 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 - Nephrology (TX) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 1,545 · 2,745 30-day fills |
|---|---|
| Patients | 182 |
| Total drug cost | $160,067 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at Houston |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Nephrology |
Medical groups
- Ch Specialty Services Tx PLLCCollege Sta, TX · 110 clinicians
- Coryell County Memorial Hospital AuthorityGatesville, TX · 38 clinicians
Hospital affiliations
- Coryell Memorial HospitalGatesville, TX
- Goodall Witcher HospitalClifton, TX
Industry payments (Open Payments)
- 2025$114.17 · 7 payments from 6 companies
- 2024$153.40 · 4 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Exact Sciences Corporation | $31.70 | 2 |
| Astrazeneca Pharmaceuticals LP | $19.10 | 1 |
| Novo Nordisk Inc | $18.23 | 1 |
| Lilly USA, LLC | $15.93 | 1 |
| Inspire Medical Systems, Inc. | $14.82 | 1 |
What the 2025 payments were for
- Food and Beverage$114.17 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records