Grigory Horonenko Jr., DO
NPI 1356394035ActiveIndividual· Internal Medicine, Pulmonary Disease· Phoenix, AZ
Internal Medicine, Pulmonary Disease (DO) with Banner - University Physician Specialists LLC and 1 other group, practicing in Phoenix, Arizona. Their prescriptions cost Medicare Part D more than their services did: $1,213,244 for 1,496 claims, against $137,350 paid for services in 2024. United Therapeutics Corporation was the largest of 15 companies reporting payments in 2025, $735.12 in all, mostly food and beverage. Lists Banner - University Medical Center Phoenix and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1356394035 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | May 17, 2006 |
| Last updated in NPPES | Jul 21, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 3864 | 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 - Pulmonary Disease (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 421 |
|---|---|
| Services billed | 1,821 across 25 procedure codes |
| Paid by Medicare | $137,350 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,496 · 2,054 30-day fills |
|---|---|
| Patients | 277 |
| Total drug cost | $1,213,244 |
| Generic share | 53% of claims |
Education and affiliations
| Graduation year | 2000 |
|---|---|
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Critical Care (Intensivists), Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Banner - University Physician Specialists LLCPhoenix, AZ · 348 clinicians
- Banner - University Hospital Based Physicians LLCPhoenix, AZ · 339 clinicians
Hospital affiliations
- Banner - University Medical Center PhoenixPhoenix, AZ
- Banner Desert Medical CenterMesa, AZ
- Banner Payson Medical CenterPayson, AZ
- Honor Health John C. Lincoln Medical CenterPhoenix, AZ
- Yavapai Regional Medical CenterPrescott, AZ
Industry payments (Open Payments)
- 2025$735.12 · 39 payments from 15 companies
- 2024$1,619 · 63 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| United Therapeutics Corporation | $160.79 | 4 |
| Electromed, Inc. | $94.37 | 12 |
| Insmed, Inc. | $84.74 | 4 |
| Glaxosmithkline, LLC. | $78.81 | 4 |
| Baxter Healthcare | $61.75 | 3 |
What the 2025 payments were for
- Food and Beverage$735.12 · 39 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other pulmonologists in Phoenix
- 1053379263
- 1083740252
- 1104831890
- 1104879436
- 1164463667
- 1194780767
- 1215991617
- 1265496665
- 1265702856
- 1285626374
- 1316019532
- 1326015405
All 100 pulmonologists in Phoenix · All pulmonologists in Arizona