Kalyanam Subramanyam Vi, M.D.
NPI 1164493870ActiveIndividual· Internal Medicine, Gastroenterology· Webster, TX
Internal Medicine, Gastroenterology (M.D.) in Webster, Texas, licensed in TX, with an NPI issued in January 2006. Their prescriptions cost Medicare Part D more than their services did: $320,131 for 1,449 claims, against $55,605 paid for services in 2024. Abbvie Inc. was the largest of 9 companies reporting payments in 2025, $580.26 in all, mostly food and beverage.
Overview
| NPI | 1164493870 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 30, 2006 |
| Last updated in NPPES | Nov 26, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | F9035 | 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) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 256 |
|---|---|
| Services billed | 691 across 17 procedure codes |
| Paid by Medicare | $55,605 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,449 · 2,946 30-day fills |
|---|---|
| Patients | 559 |
| Total drug cost | $320,131 |
| Generic share | 86% of claims |
Industry payments (Open Payments)
- 2025$580.26 · 26 payments from 9 companies
- 2024$1,442 · 65 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $150.96 | 8 |
| Takeda Pharmaceuticals U.S.A., Inc. | $127.55 | 4 |
| Pfizer Inc. | $86.81 | 4 |
| Gilead Sciences, Inc. | $84.28 | 4 |
| Madrigal Pharmaceuticals | $34.80 | 1 |
What the 2025 payments were for
- Food and Beverage$580.26 · 26 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 16 gastroenterologists in Webster · All gastroenterologists in Texas