Walter John Nieri, M.D.
NPI 1265488258ActiveIndividual· Internal Medicine, Geriatric Medicine· Phoenix, AZ
Internal Medicine, Geriatric Medicine (M.D.) with Banner Hospital Based Physicians Arizona LLC, practicing in Phoenix, Arizona. Their prescriptions cost Medicare Part D more than their services did: $88,333 for 1,459 claims, against $7,318 paid for services in 2024. Lilly USA, LLC reported $35.54 in payments in 2024, mostly food and beverage. Lists Banner Boswell Medical Center as a hospital affiliation.
Overview
| NPI | 1265488258 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 25, 2006 |
| Last updated in NPPES | Feb 24, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Geriatric Medicine Primary | 207RG0300X | 6055 | 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 - Internal Medicine (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 24 |
|---|---|
| Services billed | 90 across 2 procedure codes |
| Paid by Medicare | $7,318 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,459 · 1,642 30-day fills |
|---|---|
| Patients | 106 |
| Total drug cost | $88,333 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 1968 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Geriatric Medicine |
Medical group
- Banner Hospital Based Physicians Arizona LLCGlendale, AZ · 637 clinicians
Hospital affiliation
- Banner Boswell Medical CenterSun City, AZ
Other facilities
- Hospice of the WestHospice · Phoenix, AZ
Industry payments (Open Payments)
- 2024$35.54 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $35.54 | 1 |
What the 2024 payments were for
- Food and Beverage$35.54 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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