Gregory James Haack, MD
NPI 1235125261ActiveIndividual· Internal Medicine· Wright Patterson Afb, OH
Internal Medicine (MD) in Wright Patterson Afb, Ohio, trained at University of Cincinnati College of Medicine (class of 2000). 94 Medicare patients in 2024, $18,014 paid; nearly all of their 409 Part D prescriptions were generic (91%). Abbvie Inc. reported $29.71 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1235125261 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 26, 2005 |
| Last updated in NPPES | Apr 24, 2024 |
| Certified by provider | Apr 24, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 35.146219 | OH |
| Internal Medicine | 207R00000X | 01056726A | IN |
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 (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 94 |
|---|---|
| Services billed | 256 across 20 procedure codes |
| Paid by Medicare | $18,014 |
Part D prescriptions in 2024
| Prescriptions (claims) | 409 · 720 30-day fills |
|---|---|
| Patients | 32 |
| Total drug cost | $22,031 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | University of Cincinnati College of Medicine |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Internal Medicine |
Medical groups
- Alliance Physicians IncWest Carrollton, OH · 324 clinicians
- South Dayton Acute Care Consultants, IncDayton, OH · 119 clinicians
Hospital affiliations
- Kettering Health DaytonDayton, OH
- Kettering Health Main CampusKettering, OH
- Kettering Health MiamisburgMiamisburg, OH
- Soin Medical CenterBeaver Creek, OH
Other facilities
- Kettering HomecareHome health agency · Kettering, OH
Industry payments (Open Payments)
- 2025$29.71 · 2 payments from 1 company
- 2024$95.18 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $29.71 | 2 |
What the 2025 payments were for
- Food and Beverage$29.71 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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