William J. Duggan, M.D.
NPI 1255310488ActiveIndividual· Anesthesiology· East Hartford, CT
Anesthesiology (M.D.) in East Hartford, Connecticut, trained at University of Connecticut School of Medicine (class of 1987). Medicare paid $18,523 for services to 126 patients in 2024. Merck Sharp & Dohme LLC reported $42.17 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1255310488 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jan 16, 2006 |
| Last updated in NPPES | Mar 5, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Anesthesiology Primary | 207L00000X | 031333 | 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 - Anesthesiology (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 126 |
|---|---|
| Services billed | 133 across 29 procedure codes |
| Paid by Medicare | $18,523 |
Education and affiliations
| Medical school | University of Connecticut School of Medicine |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | Anesthesiology |
Medical group
- Integrated Anesthesia Associates LLCHartford, CT · 409 clinicians
Hospital affiliation
- Hartford HospitalHartford, CT
Industry payments (Open Payments)
- 2025$42.17 · 2 payments from 1 company
- 2024$28.64 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $42.17 | 2 |
What the 2025 payments were for
- Food and Beverage$42.17 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 65 anesthesiologists in East Hartford · All anesthesiologists in Connecticut