Erin Ashley Christmas, NP
NPI 1003493487ActiveIndividual· Nurse Practitioner, Psych/Mental Health· Milwaukee, WI
Nurse Practitioner, Psych/Mental Health (NP) in Milwaukee, Wisconsin, trained at University of Wisconsin School of Medicine (class of 2020). Their prescriptions cost Medicare Part D more than their services did: $201,067 for 1,149 claims, against $5,369 paid for services in 2024. Corium, LLC was the largest of 8 companies reporting payments in 2025, $242.21 in all, mostly food and beverage.
Overview
| NPI | 1003493487 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | No |
| NPI issued | Mar 24, 2021 |
| Last updated in NPPES | Oct 22, 2026 |
| Certified by provider | Oct 22, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Psych/Mental Health Primary | 363LP0808X | 10823-33 | WI |
| Nurse Practitioner | 363L00000X | 246679 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 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 | 36 |
|---|---|
| Services billed | 96 across 6 procedure codes |
| Paid by Medicare | $5,369 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,149 · 1,478 30-day fills |
|---|---|
| Patients | 116 |
| Total drug cost | $201,067 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | University of Wisconsin School of Medicine |
|---|---|
| Graduation year | 2020 |
| Medicare specialty | Nurse Practitioner |
Hospital affiliation
- Ascension Columbia St Marys Hospital MilwaukeeMilwaukee, WI
Industry payments (Open Payments)
- 2025$242.21 · 15 payments from 8 companies
- 2024$260.28 · 6 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Corium, LLC | $54.88 | 6 |
| Teva Pharmaceuticals USA, Inc. | $40.06 | 2 |
| E.R. Squibb & Sons, L.L.C. | $34.38 | 2 |
| Sage Therapeutics, LLC | $30.96 | 1 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $29.23 | 1 |
What the 2025 payments were for
- Food and Beverage$242.21 · 15 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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