Sean J. Callahan
NPI 1336402940ActiveIndividual· Internal Medicine, Pulmonary Disease· Ann Arbor, MI
Internal Medicine, Pulmonary Disease in Ann Arbor, Michigan, trained at University of Virginia School of Medicine (class of 2012). Their prescriptions cost Medicare Part D more than their services did: $779,334 for 486 claims, against $24,946 paid for services in 2024. Boehringer Ingelheim Pharmaceuticals, Inc. was the largest of 3 companies reporting payments in 2025, $4,015 in all, mostly consulting fees.
Overview
| NPI | 1336402940 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | Yes |
| NPI issued | Jun 19, 2012 |
| Last updated in NPPES | Mar 22, 2025 |
| Certified by provider | Mar 22, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 10830570-1205 | UT |
| Student in an Organized Health Care Education/Training Program | 390200000X | 4301100938 | MI |
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 (NC); Practitioner - Pulmonary Disease (UT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 129 |
|---|---|
| Services billed | 275 across 26 procedure codes |
| Paid by Medicare | $24,946 |
Part D prescriptions in 2024
| Prescriptions (claims) | 486 · 657 30-day fills |
|---|---|
| Patients | 83 |
| Total drug cost | $779,334 |
| Generic share | 37% of claims |
Education and affiliations
| Medical school | University of Virginia School of Medicine |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Pulmonary Disease |
| Telehealth | Offers telehealth |
Medical groups
- University of North Carolina at Chapel HillChapel Hill, NC · 2,052 clinicians
- Chatham Hospital IncSiler City, NC · 64 clinicians
Hospital affiliations
- Chatham Hospital IncSiler City, NC
- Unc HospitalsChapel Hill, NC
Industry payments (Open Payments)
- 2025$4,015 · 6 payments from 3 companies
- 2024$591.86 · 6 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, Inc. | $3,850 | 3 |
| Ethicon Inc. | $128.91 | 2 |
| United Therapeutics Corporation | $35.47 | 1 |
What the 2025 payments were for
- Consulting Fee$3,575 · 1 payment
- Food and Beverage$439.58 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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