Mark Obermyer, MD
NPI 1669634820ActiveIndividual· Internal Medicine· Brookfield, WI
Internal Medicine (MD) in Brookfield, Wisconsin, trained at Medical College of Wisconsin (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $310,240 for 4,636 claims, against $42,012 paid for services in 2024.
Overview
| NPI | 1669634820 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 30, 2008 |
| Last updated in NPPES | Jul 10, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 51868 | WI |
| Internal Medicine | 207R00000X | 036118405 | IL |
| Pediatrics | 208000000X | 036118405 | IL |
| Pediatrics | 208000000X | 51868 | WI |
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 - Pediatric Medicine (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 173 |
|---|---|
| Services billed | 563 across 32 procedure codes |
| Paid by Medicare | $42,012 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,636 · 12,250 30-day fills |
|---|---|
| Patients | 450 |
| Total drug cost | $310,240 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Medical College of Wisconsin |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Pediatric Medicine |
| Telehealth | Offers telehealth |
Medical group
- Froedtert Andthe Medical College of Wisconsin Community Physicians IncWauwatosa, WI · 1,285 clinicians
Hospital affiliations
- Community Memorial HospitalMenomonee Falls, WI
- Froedtert Memorial Lutheran HospitalMilwaukee, WI
- Waukesha Memorial HospitalWaukesha, WI
Other facilities
- Horizon Home Care and HospiceHome health agency · Milwaukee, WI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Brookfield
- 1073790804
- 1104893577
- 1164434023
- 1326010026
- 1386657450
- 1427023902
- 1538274022
- 1609819382
- 1609843663
- 1720051550
- 1730239393
- 1730444282
All 48 internal medicine physicians in Brookfield · All internal medicine physicians in Wisconsin