Daniel Katselnik, MD
NPI 1861674855ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Shavano Park, TX
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) in Shavano Park, Texas, trained at University of Texas Medical School at San Antonio (class of 2005). Their prescriptions cost Medicare Part D more than their services did: $1,316,854 for 2,550 claims, against $298,886 paid for services in 2024. Sanofi-Aventis U.S. LLC was the largest of 37 companies reporting payments in 2025, $79,873 in all, mostly speaking and faculty fees.
Overview
| NPI | 1861674855 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 30, 2007 |
| Last updated in NPPES | Mar 21, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | N1705 | TX |
| Internal Medicine | 207R00000X | N1705 | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Endocrinology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 504 |
|---|---|
| Services billed | 5,034 across 30 procedure codes |
| Paid by Medicare | $298,886 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,550 · 5,785 30-day fills |
|---|---|
| Patients | 424 |
| Total drug cost | $1,316,854 |
| Generic share | 45% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at San Antonio |
|---|---|
| Graduation year | 2005 |
| Medicare specialty | Endocrinology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Diabetes and Metabolism SpecialistsShavano Park, TX · 9 clinicians
Industry payments (Open Payments)
- 2025$79,873 · 233 payments from 37 companies
- 2024$55,527 · 233 payments from 26 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sanofi-Aventis U.S. LLC | $36,471 | 40 |
| Dexcom, Inc. | $12,856 | 16 |
| Novo Nordisk Inc | $11,795 | 25 |
| Siemens Medical Solutions USA, Inc. | $6,455 | 5 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $6,368 | 13 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$50,763 · 20 payments
- Compensation for serving as faculty or as a speaker for a medical education program$11,107 · 3 payments
- Travel and Lodging$7,191 · 22 payments
- Food and Beverage$5,596 · 185 payments
- Consulting Fee$5,200 · 2 payments
- Education$16.27 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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