John Mark Irby, FNP
NPI 1962968040ActiveIndividual· Nurse Practitioner, Family· McComb, MS
Nurse Practitioner, Family (FNP) in McComb, Mississippi, licensed in MS, with an NPI issued in February 2019. 104 Medicare patients in 2024, $4,719 paid; nearly all of their 338 Part D prescriptions were generic (95%). Purdue Pharma L.P. was the largest of 2 companies reporting payments in 2025, $80.47 in all, mostly food and beverage.
Overview
| NPI | 1962968040 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | FNP |
| Sole proprietor | No |
| NPI issued | Feb 14, 2019 |
| Last updated in NPPES | Jan 22, 2020 |
| Certified by provider | Jan 22, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 903116 | MS |
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 (MS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 104 |
|---|---|
| Services billed | 116 across 5 procedure codes |
| Paid by Medicare | $4,719 |
Part D prescriptions in 2024
| Prescriptions (claims) | 338 · 346 30-day fills |
|---|---|
| Patients | 206 |
| Total drug cost | $3,550 |
| Generic share | 95% of claims |
Industry payments (Open Payments)
- 2025$80.47 · 4 payments from 2 companies
- 2024$57.13 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Purdue Pharma L.P. | $41.91 | 2 |
| Vertex Pharmaceuticals Incorporated | $38.56 | 2 |
What the 2025 payments were for
- Food and Beverage$80.47 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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