Tonia Anne Isotalo, DNP, PMHNP-BC
NPI 1821611948ActiveIndividual· Nurse Practitioner, Psych/Mental Health· Marana, AZ
Nurse Practitioner, Psych/Mental Health (DNP, PMHNP-BC) with Marana Health Center Inc, practicing in Marana, Arizona. Their prescriptions cost Medicare Part D more than their services did: $49,365 for 877 claims, against $3,244 paid for services in 2024. Abbvie Inc. was the largest of 4 companies reporting payments in 2025, $648.82 in all, mostly food and beverage.
Overview
| NPI | 1821611948 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DNP, PMHNP-BC |
| Sole proprietor | Yes |
| NPI issued | May 22, 2020 |
| Last updated in NPPES | Jul 20, 2021 |
| Certified by provider | Jul 20, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Psych/Mental Health Primary | 363LP0808X | 241435 | AZ |
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 (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 29 |
|---|---|
| Services billed | 65 across 9 procedure codes |
| Paid by Medicare | $3,244 |
Part D prescriptions in 2024
| Prescriptions (claims) | 877 · 1,752 30-day fills |
|---|---|
| Patients | 78 |
| Total drug cost | $49,365 |
| Generic share | 98% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Marana Health Center IncMarana, AZ · 113 clinicians
Industry payments (Open Payments)
- 2025$648.82 · 17 payments from 4 companies
- 2024$514.72 · 7 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $227.25 | 12 |
| E.R. Squibb & Sons, L.L.C. | $215.16 | 3 |
| Otsuka America Pharmaceutical, Inc. | $124.99 | 1 |
| Teva Pharmaceuticals USA, Inc. | $81.42 | 1 |
What the 2025 payments were for
- Food and Beverage$539.74 · 16 payments
- Education$109.08 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 20 psychiatric nurse practitioners in Marana · All psychiatric nurse practitioners in Arizona