Kenneth Richard Hassler, DO
NPI 1659783348ActiveIndividual· Thoracic Surgery (Cardiothoracic Vascular Surgery)· Ann Arbor, MI
Thoracic Surgery (Cardiothoracic Vascular Surgery) (DO) in Ann Arbor, Michigan, trained at New York University School of Medicine (class of 2024). Medicare paid $31,397 for services to 61 patients in 2024. Edwards Lifesciences Corporation was the largest of 6 companies reporting payments in 2025, $17,144 in all, mostly consulting fees.
Overview
| NPI | 1659783348 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | May 29, 2014 |
| Last updated in NPPES | Apr 23, 2024 |
| Certified by provider | Apr 23, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Thoracic Surgery (Cardiothoracic Vascular Surgery) Primary | 208G00000X | 5101027406 | MI |
| Thoracic Surgery (Cardiothoracic Vascular Surgery) | 208G00000X | 66795 | MN |
| Thoracic Surgery (Cardiothoracic Vascular Surgery) | 208G00000X | 77273 | CT |
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) | Enrolled Practitioner - Thoracic Surgery (CT); Practitioner - Thoracic Surgery (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 61 |
|---|---|
| Services billed | 109 across 38 procedure codes |
| Paid by Medicare | $31,397 |
Education and affiliations
| Medical school | New York University School of Medicine |
|---|---|
| Graduation year | 2024 |
| Medicare specialty | Thoracic Surgery |
Medical group
- Nuvance Health Medical Practice CT IncDanbury, CT · 747 clinicians
Hospital affiliations
- Danbury HospitalDanbury, CT
- Norwalk HospitalNorwalk, CT
Other facilities
- Western Connecticut Home Care IncHome health agency · Danbury, CT
Industry payments (Open Payments)
- 2025$17,144 · 46 payments from 6 companies
- 2024$10,712 · 44 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Edwards Lifesciences Corporation | $13,715 | 27 |
| Artivion, Inc. | $2,915 | 12 |
| Bolton Medical Inc | $402.67 | 4 |
| Medtronic, Inc. | $47.49 | 1 |
| Abiomed | $34.05 | 1 |
What the 2025 payments were for
- Consulting Fee$9,500 · 1 payment
- Travel and Lodging$5,674 · 11 payments
- Food and Beverage$1,969 · 34 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 48 cardiothoracic surgeons in Ann Arbor · All cardiothoracic surgeons in Michigan