Denise Yvette O'Neil
NPI 1184164865ActiveIndividual· Nurse Practitioner, Psych/Mental Health· Chattanooga, TN
Nurse Practitioner, Psych/Mental Health with En LLC, practicing in Chattanooga, Tennessee. Their prescriptions cost Medicare Part D more than their services did: $7,700 for 245 claims, against $2,985 paid for services in 2024. Collegium Pharmaceutical, Inc. was the largest of 10 companies reporting payments in 2025, $1,324 in all, mostly food and beverage.
Overview
| NPI | 1184164865 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Mar 1, 2017 |
| Last updated in NPPES | Oct 20, 2025 |
| Certified by provider | Oct 20, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Psych/Mental Health Primary | 363LP0808X | 22141 | TN |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 31 |
|---|---|
| Services billed | 142 across 23 procedure codes |
| Paid by Medicare | $2,985 |
Part D prescriptions in 2024
| Prescriptions (claims) | 245 · 290 30-day fills |
|---|---|
| Patients | 65 |
| Total drug cost | $7,700 |
| Generic share | 93% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- En LLCChattanooga, TN · 16 clinicians
Industry payments (Open Payments)
- 2025$1,324 · 33 payments from 10 companies
- 2024$524.79 · 23 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Collegium Pharmaceutical, Inc. | $262.50 | 10 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $174.50 | 4 |
| Corium, LLC | $164.49 | 7 |
| Otsuka America Pharmaceutical, Inc. | $139.79 | 2 |
| Vanda Pharmaceuticals Inc. | $125.00 | 1 |
What the 2025 payments were for
- Food and Beverage$1,324 · 33 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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