Thottathil Viswanathan Gopan, MD
NPI 1023148939ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Munster, IN
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) with Franciscan Physician Network, practicing in Munster, Indiana. Their prescriptions cost Medicare Part D more than their services did: $1,975,283 for 5,190 claims, against $106,347 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 12 companies reporting payments in 2025, $1,556 in all, mostly food and beverage. Lists Community Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1023148939 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 7, 2007 |
| Last updated in NPPES | Jul 31, 2023 |
| Certified by provider | Jul 31, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 01063174 | IN |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 424 |
|---|---|
| Services billed | 2,160 across 20 procedure codes |
| Paid by Medicare | $106,347 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,190 · 10,662 30-day fills |
|---|---|
| Patients | 539 |
| Total drug cost | $1,975,283 |
| Generic share | 40% of claims |
Education and affiliations
| Graduation year | 1998 |
|---|---|
| Medicare specialty | Endocrinology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Franciscan Physician NetworkShelbyville, IN · 1,170 clinicians
Hospital affiliations
- Community HospitalMunster, IN
- Franciscan Health Crown PointCrown Point, IN
- Franciscan Health DyerDyer, IN
- Franciscan Health Michigan CityMichigan City, IN
- Franciscan Health MunsterMunster, IN
Industry payments (Open Payments)
- 2025$1,556 · 14 payments from 12 companies
- 2024$1,297 · 13 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $239.29 | 2 |
| Astrazeneca Pharmaceuticals LP | $199.53 | 2 |
| Medtronic, Inc. | $144.03 | 1 |
| Insulet Corporation | $143.34 | 1 |
| Beta Bionics, Inc. | $136.07 | 1 |
What the 2025 payments were for
- Food and Beverage$1,556 · 14 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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