Thinesh Dahanayake, MD
NPI 1639293186ActiveIndividual· Internal Medicine, Pulmonary Disease· Norwich, CT
Internal Medicine, Pulmonary Disease (MD) in Norwich, Connecticut, trained at Albany Medical College of Union University (class of 2003). Their prescriptions cost Medicare Part D more than their services did: $2,103,806 for 2,940 claims, against $153,990 paid for services in 2024. Genzyme Corporation was the largest of 24 companies reporting payments in 2025, $97,743 in all, mostly speaking and faculty fees.
Overview
| NPI | 1639293186 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Mar 19, 2007 |
| Last updated in NPPES | May 21, 2024 |
| Certified by provider | May 21, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 049691 | CT |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Pulmonary Disease (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 434 |
|---|---|
| Services billed | 2,293 across 38 procedure codes |
| Paid by Medicare | $153,990 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,940 · 5,912 30-day fills |
|---|---|
| Patients | 562 |
| Total drug cost | $2,103,806 |
Education and affiliations
| Medical school | Albany Medical College of Union University |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Pulmonary Physicians of Norwich PCWaterford, CT · 9 clinicians
Hospital affiliations
- Lawrence & Memorial HospitalNew London, CT
- William W Backus HospitalNorwich, CT
- Windham Community Memorial HospitalWillimantic, CT
Industry payments (Open Payments)
- 2025$97,743 · 168 payments from 24 companies
- 2024$52,533 · 137 payments from 21 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $83,493 | 58 |
| Regeneron Healthcare Solutions, Inc. | $11,791 | 14 |
| Astrazeneca Pharmaceuticals LP | $787.88 | 24 |
| Glaxosmithkline, LLC. | $392.50 | 24 |
| Mallinckrodt Hospital Products Inc. | $256.19 | 5 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$57,105 · 15 payments
- Consulting Fee$29,736 · 10 payments
- Travel and Lodging$6,630 · 19 payments
- Food and Beverage$4,183 · 123 payments
- Education$89.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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