Patrick Michael Mackey, M.D.
NPI 1316151848ActiveIndividual· Internal Medicine· Wheaton, IL
Internal Medicine (M.D.) in Wheaton, Illinois, trained at Rush Medical College of Rush University (class of 2005). Their prescriptions cost Medicare Part D more than their services did: $242,464 for 5,387 claims, against $148,203 paid for services in 2024. Exact Sciences Corporation was the largest of 2 companies reporting payments in 2025, $97.79 in all, mostly food and beverage.
Overview
| NPI | 1316151848 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 10, 2007 |
| Last updated in NPPES | Aug 29, 2023 |
| Certified by provider | Aug 29, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036123918 | IL |
| Pediatrics | 208000000X | 036123918 | 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 | 391 |
|---|---|
| Services billed | 3,850 across 86 procedure codes |
| Paid by Medicare | $148,203 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,387 · 13,918 30-day fills |
|---|---|
| Patients | 555 |
| Total drug cost | $242,464 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | Rush Medical College of Rush University |
|---|---|
| Graduation year | 2005 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Pediatric Medicine |
| Telehealth | Offers telehealth |
Medical group
- Dupage Medical Group LtdWinfield, IL · 1,322 clinicians
Hospital affiliation
- Northwestern Medicine Central Dupage HospitalWinfield, IL
Other facilities
- Astra Health WestHome health agency · Elgin, IL
- Residential Home HealthHome health agency · Lisle, IL
- Resilience Home Health, LLCHome health agency · Aurora, IL
- Lighthouse Hospice Care LLCHospice · Naperville, IL
Industry payments (Open Payments)
- 2025$97.79 · 4 payments from 2 companies
- 2024$30.66 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Exact Sciences Corporation | $74.59 | 3 |
| Pfizer Inc. | $23.20 | 1 |
What the 2025 payments were for
- Food and Beverage$97.79 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 23 internal medicine physicians in Wheaton · All internal medicine physicians in Illinois