Vishwanath Pattan, MD
NPI 1770902330ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Evansville, IN
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) with St Marys Medical Group LLC, practicing in Evansville, Indiana. Their prescriptions cost Medicare Part D more than their services did: $1,845,444 for 3,048 claims, against $120,801 paid for services in 2024. Tandem Diabetes Care, Inc. was the largest of 12 companies reporting payments in 2025, $511.14 in all, mostly food and beverage. Lists Ascension St Vincent Evansville and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1770902330 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 10, 2014 |
| Last updated in NPPES | Aug 20, 2025 |
| Certified by provider | Aug 20, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 01088993A | IN |
| Internal Medicine, Endocrinology, Diabetes & Metabolism | 207RE0101X | 10513A | WY |
| Student in an Organized Health Care Education/Training Program | 390200000X | 129650 | CA |
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 - Endocrinology (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 281 |
|---|---|
| Services billed | 6,526 across 60 procedure codes |
| Paid by Medicare | $120,801 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,048 · 7,003 30-day fills |
|---|---|
| Patients | 479 |
| Total drug cost | $1,845,444 |
| Generic share | 38% of claims |
Education and affiliations
| Graduation year | 2006 |
|---|---|
| Medicare specialty | Endocrinology |
Medical group
- St Marys Medical Group LLCEvansville, IN · 228 clinicians
Hospital affiliations
- Ascension St Vincent EvansvilleEvansville, IN
- Ascension St Vincent WarrickBoonville, IN
- Deaconess Hospital IncEvansville, IN
- Memorial Hospital and Health Care CenterJasper, IN
Industry payments (Open Payments)
- 2025$511.14 · 29 payments from 12 companies
- 2024$918.49 · 41 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Tandem Diabetes Care, Inc. | $172.43 | 12 |
| Medtronic, Inc. | $65.61 | 3 |
| Amgen Inc. | $45.85 | 2 |
| Novo Nordisk Inc | $36.20 | 2 |
| Xeris Pharmaceuticals, Inc. | $31.83 | 2 |
What the 2025 payments were for
- Food and Beverage$511.14 · 29 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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