Susan M. Duffy, M.D.
NPI 1851509749ActiveIndividual· Psychiatry & Neurology, Neurology· Iowa City, IA
Psychiatry & Neurology, Neurology (M.D.) in Iowa City, Iowa, trained at University of Iowa, Rj & L Carver College of Medicine (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $24,954 for 205 claims, against $14,742 paid for services in 2024. Janssen Biotech, Inc. reported $44.34 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1851509749 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 21, 2007 |
| Last updated in NPPES | Jun 23, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | MD-37729 | IA |
| Psychiatry & Neurology, Psychiatry | 2084P0800X | 4301095404 | MI |
| Psychiatry & Neurology, Geriatric Psychiatry | 2084P0805X | 4301095404 | MI |
| Psychiatry & Neurology, Geriatric Psychiatry | 2084P0805X | MD-37729 | IA |
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 - Psychiatry (IA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 159 |
|---|---|
| Services billed | 212 across 7 procedure codes |
| Paid by Medicare | $14,742 |
Part D prescriptions in 2024
| Prescriptions (claims) | 205 · 259 30-day fills |
|---|---|
| Patients | 42 |
| Total drug cost | $24,954 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | University of Iowa, Rj & L Carver College of Medicine |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Medical group
- State University of IowaCoralville, IA · 1,897 clinicians
Hospital affiliations
- University of Iowa Hospital & ClinicsIowa City, IA
- Van Buren County HospitalKeosauqua, IA
Industry payments (Open Payments)
- 2025$44.34 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $44.34 | 2 |
What the 2025 payments were for
- Food and Beverage$44.34 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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