Onissa Sharan Mitchell-Fisher, MSN, APRN, FNP-C
NPI 1255752432ActiveIndividual· Nurse Practitioner· Tyler, TX
Nurse Practitioner (MSN, APRN, FNP-C) with Phynet, Inc., practicing in Tyler, Texas. Their prescriptions cost Medicare Part D more than their services did: $13,578 for 276 claims, against $3,642 paid for services in 2024. Exact Sciences Corporation reported $31.40 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1255752432 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MSN, APRN, FNP-C |
| Sole proprietor | No |
| NPI issued | Dec 14, 2013 |
| Last updated in NPPES | Mar 3, 2021 |
| Certified by provider | Mar 3, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | AP124869 | TX |
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 (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 31 |
|---|---|
| Services billed | 78 across 15 procedure codes |
| Paid by Medicare | $3,642 |
Part D prescriptions in 2024
| Prescriptions (claims) | 276 · 577 30-day fills |
|---|---|
| Patients | 103 |
| Total drug cost | $13,578 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 2013 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Phynet, Inc.Gladewater, TX · 15 clinicians
Industry payments (Open Payments)
- 2025$31.40 · 2 payments from 1 company
- 2024$21.96 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Exact Sciences Corporation | $31.40 | 2 |
What the 2025 payments were for
- Food and Beverage$31.40 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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