Nathalie K. Diethrich, PMHNP
NPI 1104374727ActiveIndividual· Nurse Practitioner, Psych/Mental Health· Decatur, IL
Nurse Practitioner, Psych/Mental Health (PMHNP) with Heritage Behavioral Health Center, Inc., practicing in Decatur, Illinois. Their prescriptions cost Medicare Part D more than their services did: $1,240,344 for 3,384 claims, against $4,045 paid for services in 2024. Abbvie Inc. was the largest of 2 companies reporting payments in 2025, $72.54 in all, mostly food and beverage.
Overview
| NPI | 1104374727 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PMHNP |
| Sole proprietor | No |
| NPI issued | Sep 12, 2016 |
| Last updated in NPPES | Sep 30, 2025 |
| Certified by provider | Sep 30, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Psych/Mental Health Primary | 363LP0808X | 277001744 | IL |
| Nurse Practitioner, Psych/Mental Health | 363LP0808X | 377001689 | IL |
| Nurse Practitioner, Psych/Mental Health | 363LP0808X | 209.014716 | IL |
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 (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 54 |
|---|---|
| Services billed | 102 across 4 procedure codes |
| Paid by Medicare | $4,045 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,384 · 3,707 30-day fills |
|---|---|
| Patients | 142 |
| Total drug cost | $1,240,344 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2006 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Heritage Behavioral Health Center, Inc.Decatur, IL · 20 clinicians
Industry payments (Open Payments)
- 2025$72.54 · 3 payments from 2 companies
- 2024$8,534 · 35 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $50.95 | 2 |
| Indivior Inc. | $21.59 | 1 |
What the 2025 payments were for
- Food and Beverage$72.54 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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