Douglas Marx, D.O.
NPI 1326011321ActiveIndividual· Family Medicine· Germantown, WI
Family Medicine (D.O.) in Germantown, Wisconsin, trained at Midwestern University, Chicago College of Osteopathic Med (class of 1997). Their prescriptions cost Medicare Part D more than their services did: $283,929 for 4,421 claims, against $105,545 paid for services in 2024.
Overview
| NPI | 1326011321 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Feb 9, 2006 |
| Last updated in NPPES | Feb 3, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 40581 | WI |
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 (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 704 |
|---|---|
| Services billed | 2,272 across 47 procedure codes |
| Paid by Medicare | $105,545 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,421 · 10,653 30-day fills |
|---|---|
| Patients | 737 |
| Total drug cost | $283,929 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | Midwestern University, Chicago College of Osteopathic Med |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Prohealth Medical Group IncMukwonago, WI · 479 clinicians
Hospital affiliation
- Waukesha Memorial HospitalWaukesha, WI
Other facilities
- Prohealth Home CareHome health agency · Waukesha, WI
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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