Leslie Klein, M.D.
NPI 1619101771ActiveIndividual· Internal Medicine, Hematology & Oncology· Scottsdale, AZ
Internal Medicine, Hematology & Oncology (M.D.) with Ironwood Physicians PC, practicing in Scottsdale, Arizona. Their prescriptions cost Medicare Part D more than their services did: $4,481,500 for 1,376 claims, against $2,555,124 paid for services in 2024. Abbvie Inc. was the largest of 35 companies reporting payments in 2025, $2,564 in all, mostly food and beverage. Lists Honor Health John C. Lincoln Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1619101771 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 5, 2009 |
| Last updated in NPPES | Nov 15, 2022 |
| Certified by provider | Nov 15, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 50658 | 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 - Hematology/Oncology (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 803 |
|---|---|
| Services billed | 173,269 across 132 procedure codes |
| Paid by Medicare | $2,555,124 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,376 · 2,304 30-day fills |
|---|---|
| Patients | 220 |
| Total drug cost | $4,481,500 |
| Generic share | 74% of claims |
Education and affiliations
| Graduation year | 2009 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- Ironwood Physicians PCChandler, AZ · 116 clinicians
Hospital affiliations
- Honor Health John C. Lincoln Medical CenterPhoenix, AZ
- Honorhealth Scottsdale Osborn Medical CenterScottsdale, AZ
- Honorhealth Scottsdale Shea Medical CenterScottsdale, AZ
- Honorhealth Scottsdale Thompson Peak Med CtrScottsdale, AZ
- Honorhealth Sonoran Crossing Medical CenterPhoenix, AZ
Industry payments (Open Payments)
- 2025$2,564 · 112 payments from 35 companies
- 2024$2,271 · 113 payments from 32 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $218.22 | 11 |
| Astrazeneca Pharmaceuticals LP | $193.40 | 9 |
| Merck Sharp & Dohme LLC | $168.31 | 6 |
| Pfizer Inc. | $162.65 | 7 |
| Array Biopharma Inc | $160.67 | 9 |
What the 2025 payments were for
- Food and Beverage$2,505 · 109 payments
- Education$59.27 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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