Mary Ann Giannini, CNP
NPI 1659641223ActiveIndividual· Nurse Practitioner, Adult Health· Maumee, OH
Nurse Practitioner, Adult Health (CNP) with Preferred Physician Services of Ohio LLC and 1 other group, practicing in Maumee, Ohio. 17 Medicare patients in 2024, $3,789 paid; nearly all of their 51 Part D prescriptions were generic (92%). Otsuka America Pharmaceutical, Inc. reported $19.27 in payments in 2025, mostly food and beverage. Lists University of Toledo Medical Center as a hospital affiliation.
Overview
| NPI | 1659641223 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | CNP |
| Sole proprietor | No |
| NPI issued | Jan 12, 2012 |
| Last updated in NPPES | May 25, 2026 |
| Certified by provider | May 25, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Adult Health Primary | 363LA2200X | 12819-NP | OH |
| Technician, Personal Care Attendant | 3747P1801X | — | OH |
| Private Vehicle | 347C00000X | — | OH |
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 (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 17 |
|---|---|
| Services billed | 53 across 9 procedure codes |
| Paid by Medicare | $3,789 |
Part D prescriptions in 2024
| Prescriptions (claims) | 51 · 55 30-day fills |
|---|---|
| Patients | 21 |
| Total drug cost | $4,168 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical groups
- Preferred Physician Services of Ohio LLCWesterville, OH · 69 clinicians
- Curana Health of OhioCincinnati, OH · 54 clinicians
Hospital affiliation
- University of Toledo Medical CenterToledo, OH
Other facilities
- Ohio Living Home Health Greater ToledoHome health agency · Toledo, OH
Industry payments (Open Payments)
- 2025$19.27 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Otsuka America Pharmaceutical, Inc. | $19.27 | 1 |
What the 2025 payments were for
- Food and Beverage$19.27 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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