Mary J. Johnson Barton, PMHNP-BC
NPI 1821543463ActiveIndividual· Nurse Practitioner, Psych/Mental Health· Greeneville, TN
Nurse Practitioner, Psych/Mental Health (PMHNP-BC) with Frontier Health, practicing in Greeneville, Tennessee. Their prescriptions cost Medicare Part D more than their services did: $241,389 for 2,019 claims, against $1,958 paid for services in 2024.
Overview
| NPI | 1821543463 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PMHNP-BC |
| Sole proprietor | Yes |
| NPI issued | Aug 24, 2016 |
| Last updated in NPPES | Feb 13, 2025 |
| Certified by provider | Feb 13, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Psych/Mental Health Primary | 363LP0808X | APN0000021324 | TN |
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 (TN); Practitioner - Nurse Practitioner (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 53 |
|---|---|
| Services billed | 61 across 2 procedure codes |
| Paid by Medicare | $1,958 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,019 · 2,348 30-day fills |
|---|---|
| Patients | 416 |
| Total drug cost | $241,389 |
| Generic share | 93% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Frontier HealthWeber City, VA · 69 clinicians
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 16 psychiatric nurse practitioners in Greeneville · All psychiatric nurse practitioners in Tennessee