Derek Michael Littlejohn, PMHNP-BC
NPI 1912676669ActiveIndividual· Nurse Practitioner, Psych/Mental Health· Indianapolis, IN
Nurse Practitioner, Psych/Mental Health (PMHNP-BC) with Healthnet Inc, practicing in Indianapolis, Indiana. Part D covered 42 prescriptions written in 2024, 90% of them generic. Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) was the largest of 11 companies reporting payments in 2025, $682.73 in all, mostly food and beverage.
Overview
| NPI | 1912676669 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PMHNP-BC |
| Sole proprietor | Yes |
| NPI issued | Sep 7, 2021 |
| Last updated in NPPES | Jan 24, 2023 |
| Certified by provider | Jan 24, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Psych/Mental Health Primary | 363LP0808X | 71012926A | IN |
| Registered Nurse, Psych/Mental Health | 163WP0808X | 28220461A | IN |
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 (IN) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 42 · 54 30-day fills |
|---|---|
| Total drug cost | $5,882 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 2022 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Healthnet IncIndianapolis, IN · 81 clinicians
Industry payments (Open Payments)
- 2025$682.73 · 38 payments from 11 companies
- 2024$2,253 · 124 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $198.39 | 10 |
| Supernus Pharmaceuticals, Inc. | $153.63 | 13 |
| Indivior Inc. | $68.33 | 3 |
| Abbvie Inc. | $64.68 | 3 |
| Alkermes, Inc. | $51.96 | 2 |
What the 2025 payments were for
- Food and Beverage$682.73 · 38 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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