Fred J. Halloran, MD
NPI 1568434942ActiveIndividual· Internal Medicine· Huntley, IL
Internal Medicine (MD) in Huntley, Illinois, trained at Northwestern University Feinberg Medical School (class of 1988). Their prescriptions cost Medicare Part D more than their services did: $153,667 for 1,977 claims, against $42,663 paid for services in 2024. Pfizer Inc. was the largest of 2 companies reporting payments in 2025, $220.26 in all, mostly food and beverage.
Overview
| NPI | 1568434942 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Feb 1, 2006 |
| Last updated in NPPES | Jan 17, 2024 |
| Certified by provider | Jan 17, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036081972 | IL |
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 - Internal Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 162 |
|---|---|
| Services billed | 515 across 11 procedure codes |
| Paid by Medicare | $42,663 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,977 · 5,147 30-day fills |
|---|---|
| Patients | 191 |
| Total drug cost | $153,667 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Northwestern University Feinberg Medical School |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Internal Medicine |
Hospital affiliations
- Advocate Sherman HospitalElgin, IL
- Northwest Community Hospital 1Arlington Heights, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
- Northwestern Medicine McHenryMcHenry, IL
- St Alexius Medical CenterHoffman Estates, IL
Other facilities
- Residential Home HealthHome health agency · Schaumburg, IL
Industry payments (Open Payments)
- 2025$220.26 · 8 payments from 2 companies
- 2024$288.77 · 11 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $163.82 | 6 |
| Eisai Inc. | $56.44 | 2 |
What the 2025 payments were for
- Food and Beverage$220.26 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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