Kristi Kay Grutzmacher, APNP
NPI 1669887246ActiveIndividual· Nurse Practitioner, Family· Waukesha, WI
Nurse Practitioner, Family (APNP) with Oak Medical SC, practicing in Waukesha, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $191,754 for 4,782 claims, against $64,968 paid for services in 2024. Otsuka America Pharmaceutical, Inc. reported $50.26 in payments in 2024, mostly food and beverage.
Overview
| NPI | 1669887246 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APNP |
| Sole proprietor | Yes |
| NPI issued | Jun 23, 2014 |
| Last updated in NPPES | Jan 13, 2025 |
| Certified by provider | Jan 13, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 5824-33 | WI |
| Family Medicine | 207Q00000X | 5824 | 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 - Nurse Practitioner (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 195 |
|---|---|
| Services billed | 757 across 12 procedure codes |
| Paid by Medicare | $64,968 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,782 · 4,825 30-day fills |
|---|---|
| Patients | 168 |
| Total drug cost | $191,754 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 2013 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Oak Medical SCLodi, WI · 123 clinicians
Industry payments (Open Payments)
- 2024$50.26 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Otsuka America Pharmaceutical, Inc. | $50.26 | 1 |
What the 2024 payments were for
- Food and Beverage$50.26 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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