Mark Halger Christensen, D.O.
NPI 1942314257ActiveIndividual· Family Medicine· New Lenox, IL
Family Medicine (D.O.) in New Lenox, Illinois, trained at Chicago College of Osteopathy (class of 1990). Their prescriptions cost Medicare Part D more than their services did: $450,930 for 8,146 claims, against $136,148 paid for services in 2024. Novo Nordisk Inc reported $18.50 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1942314257 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Aug 17, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | — | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 454 |
|---|---|
| Services billed | 3,859 across 37 procedure codes |
| Paid by Medicare | $136,148 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,146 · 18,891 30-day fills |
|---|---|
| Patients | 776 |
| Total drug cost | $450,930 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | Chicago College of Osteopathy |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Family Practice |
Medical group
- Health Service Systems, IncNew Lenox, IL · 68 clinicians
Hospital affiliations
- Saint Joseph Medical CenterJoliet, IL
- Silver Cross Hospital and Medical CentersNew Lenox, IL
Other facilities
- Newsome Home Health Care & Purpose Care of Illinois - JolietHome health agency · Joliet, IL
- Silver Cross Home HealthHome health agency · New Lenox, IL
- Lightways Hospice and Serious Illness CareHospice · Joliet, IL
Industry payments (Open Payments)
- 2025$18.50 · 1 payment from 1 company
- 2024$169.20 · 9 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $18.50 | 1 |
What the 2025 payments were for
- Food and Beverage$18.50 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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