John Demask, D.O.
NPI 1174501134ActiveIndividual· Family Medicine· Minooka, IL
Family Medicine (D.O.) in Minooka, Illinois, trained at Chicago College of Osteopathy (class of 1993). Their prescriptions cost Medicare Part D more than their services did: $141,030 for 4,293 claims, against $64,965 paid for services in 2024.
Overview
| NPI | 1174501134 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Jan 9, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 036094869 | 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 - Family Practice (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 245 |
|---|---|
| Services billed | 1,107 across 12 procedure codes |
| Paid by Medicare | $64,965 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,293 · 7,529 30-day fills |
|---|---|
| Patients | 303 |
| Total drug cost | $141,030 |
| Generic share | 95% of claims |
Education and affiliations
| Medical school | Chicago College of Osteopathy |
|---|---|
| Graduation year | 1993 |
| Medicare specialty | Family Practice |
Hospital affiliations
- Morris Hospital & Healthcare CentersMorris, IL
- Saint Joseph Medical CenterJoliet, IL
Other facilities
- At Home Quality Care - MorrisHome health agency · Morris, IL
- Newsome Home Health Care & Purpose Care of Illinois - JolietHome health agency · Joliet, IL
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other family medicine physicians in Minooka
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