Harshinie Chamindika Amaratunge, M.D
NPI 1265696504ActiveIndividual· Internal Medicine, Gastroenterology· Houston, TX
Internal Medicine, Gastroenterology (M.D) in Houston, Texas, trained at University of Texas Medical Branch at Galveston (class of 2005). Their prescriptions cost Medicare Part D more than their services did: $637,061 for 1,042 claims, against $167,737 paid for services in 2024. Abbvie Inc. was the largest of 15 companies reporting payments in 2025, $2,534 in all, mostly food and beverage.
Overview
| NPI | 1265696504 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D |
| Sole proprietor | No |
| NPI issued | Jul 16, 2008 |
| Last updated in NPPES | Apr 12, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | M8490 | 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 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 - Gastroenterology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 360 |
|---|---|
| Services billed | 6,187 across 37 procedure codes |
| Paid by Medicare | $167,737 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,042 · 1,973 30-day fills |
|---|---|
| Patients | 333 |
| Total drug cost | $637,061 |
| Generic share | 71% of claims |
Education and affiliations
| Medical school | University of Texas Medical Branch at Galveston |
|---|---|
| Graduation year | 2005 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Texas Digestive Disease Consultants, PLLCFlower Mound, TX · 608 clinicians
Hospital affiliations
- Baylor St Lukes Medical CenterHouston, TX
- Houston Methodist Baytown HospitalBaytown, TX
- Houston Methodist Clear Lake HospitalNassau Bay, TX
- Houston Methodist HospitalHouston, TX
- Houston Methodist Sugarland HospitalSugar Land, TX
Industry payments (Open Payments)
- 2025$2,534 · 108 payments from 15 companies
- 2024$2,199 · 96 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $918.05 | 47 |
| Takeda Pharmaceuticals U.S.A., Inc. | $369.93 | 15 |
| Qol Medical, LLC | $322.60 | 10 |
| Janssen Biotech, Inc. | $191.48 | 8 |
| Neuraxis, Inc. | $164.70 | 1 |
What the 2025 payments were for
- Food and Beverage$2,534 · 108 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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