John George Sanidas, M.D.
NPI 1356388359ActiveIndividual· Internal Medicine· Mequon, WI
Internal Medicine (M.D.) in Mequon, Wisconsin, trained at Medical College of Wisconsin (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $1,033,139 for 16,167 claims, against $135,638 paid for services in 2024.
Overview
| NPI | 1356388359 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 31, 2006 |
| Last updated in NPPES | Nov 9, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 38112 | 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 - Internal Medicine (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 527 |
|---|---|
| Services billed | 3,232 across 39 procedure codes |
| Paid by Medicare | $135,638 |
Part D prescriptions in 2024
| Prescriptions (claims) | 16,167 · 30,753 30-day fills |
|---|---|
| Patients | 919 |
| Total drug cost | $1,033,139 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | Medical College of Wisconsin |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Internal Medicine |
Medical group
- Madison Medical Affiliates IncMilwaukee, WI · 86 clinicians
Hospital affiliations
- Ascension Columbia St Marys Hospital MilwaukeeMilwaukee, WI
- Ascension Se Wisconsin HospitalMilwaukee, WI
- Aurora Medical CenterGrafton, WI
- Orthopaedic Hospital of WisconsinGlendale, WI
- Waukesha Memorial HospitalWaukesha, WI
Other facilities
- Ascension at HomeHome health agency · Milwaukee, WI
- Aurora at HomeHome health agency · Milwaukee, WI
- Brighton Hospice WisconsinHospice · Brookfield, WI
- Legacy HospiceHospice · Elm Grove, WI
- North Shore at HomeHospice · Glendale, WI
- Cedarburg Health ServicesNursing home · Cedarburg, WI
- Lasata Care CenterNursing home · Cedarburg, WI
- Newcastle PlaceNursing home · Mequon, WI
- Saint Johns on the LakeNursing home · Milwaukee, 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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All 27 internal medicine physicians in Mequon · All internal medicine physicians in Wisconsin