Ashis Kumar Chakrabarti, M.D.
NPI 1912953001ActiveIndividual· Internal Medicine, Hematology & Oncology· Terre Haute, IN
Internal Medicine, Hematology & Oncology (M.D.) with Union Associated Physicians Clinic, LLC, practicing in Terre Haute, Indiana. Their prescriptions cost Medicare Part D more than their services did: $1,786,714 for 1,158 claims, against $110,167 paid for services in 2024. Seagen Inc. was the largest of 36 companies reporting payments in 2025, $2,551 in all, mostly food and beverage. Lists Greene County General Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1912953001 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 26, 2006 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 01054036A | 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 - Internal Medicine (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 355 |
|---|---|
| Services billed | 4,043 across 20 procedure codes |
| Paid by Medicare | $110,167 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,158 · 1,696 30-day fills |
|---|---|
| Patients | 174 |
| Total drug cost | $1,786,714 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 1987 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Hematology, Medical Oncology |
Medical group
- Union Associated Physicians Clinic, LLCTerre Haute, IN · 230 clinicians
Hospital affiliations
- Greene County General HospitalLinton, IN
- Sullivan County Community HospitalSullivan, IN
- Terre Haute Regional HospitalTerre Haute, IN
- Union Hospital ClintonClinton, IN
- Union Hospital IncTerre Haute, IN
Industry payments (Open Payments)
- 2025$2,551 · 128 payments from 36 companies
- 2024$3,152 · 163 payments from 34 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Seagen Inc. | $291.94 | 3 |
| Merck Sharp & Dohme LLC | $275.91 | 15 |
| Pfizer Inc. | $206.05 | 16 |
| Incyte Corporation | $197.30 | 7 |
| Janssen Biotech, Inc. | $167.75 | 11 |
What the 2025 payments were for
- Food and Beverage$2,151 · 123 payments
- Education$400.92 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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