Mark L. Switzer, M.D.
NPI 1336181395ActiveIndividual· Hospitalist· Bolingbrook, IL
Hospitalist (M.D.) in Bolingbrook, Illinois, trained at University of Nebraska College of Medicine (class of 1996). 199 Medicare patients in 2024, $50,186 paid; nearly all of their 70 Part D prescriptions were generic (97%).
Overview
| NPI | 1336181395 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 12, 2006 |
| Last updated in NPPES | Mar 6, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | 036102478 | IL |
| Pediatrics | 208000000X | 036102478 | IL |
| Internal Medicine | 207R00000X | 036102478 | 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 | 199 |
|---|---|
| Services billed | 489 across 12 procedure codes |
| Paid by Medicare | $50,186 |
Part D prescriptions in 2024
| Prescriptions (claims) | 70 · 70 30-day fills |
|---|---|
| Patients | 27 |
| Total drug cost | $596.70 |
| Generic share | 97% of claims |
Education and affiliations
| Medical school | University of Nebraska College of Medicine |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Internal Medicine |
Medical groups
- Knd Development 59 LLCFort Lauderdale, FL · 177 clinicians
- Advance Inpatient Medicine LLCHinsdale, IL · 42 clinicians
Hospital affiliations
- Uchicago Medicine Adventhealth BolingbrookBolingbrook, IL
- Uchicago Medicine Adventhealth HinsdaleHinsdale, IL
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 19 hospitalists in Bolingbrook · All hospitalists in Illinois