Dennis Andrew Buck, DO
NPI 1114157195ActiveIndividual· Internal Medicine, Hematology & Oncology· Show Low, AZ
Internal Medicine, Hematology & Oncology (DO) in Show Low, Arizona, trained at Touro Un College of Osteopathic Medicine, Vallejo (class of 2009). Their prescriptions cost Medicare Part D more than their services did: $1,427,191 for 312 claims, against $13,043 paid for services in 2024. Abbvie Inc. was the largest of 2 companies reporting payments in 2024, $170.70 in all, mostly food and beverage.
Overview
| NPI | 1114157195 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Jul 23, 2009 |
| Last updated in NPPES | Oct 8, 2025 |
| Certified by provider | Oct 8, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 011954 | AZ |
| Internal Medicine, Medical Oncology | 207RX0202X | 5355 | OK |
| Internal Medicine | 207R00000X | SL0646 | NV |
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); Practitioner - Hematology/Oncology (MN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 87 |
|---|---|
| Services billed | 145 across 6 procedure codes |
| Paid by Medicare | $13,043 |
Part D prescriptions in 2024
| Prescriptions (claims) | 312 · 493 30-day fills |
|---|---|
| Patients | 73 |
| Total drug cost | $1,427,191 |
| Generic share | 66% of claims |
Education and affiliations
| Medical school | Touro Un College of Osteopathic Medicine, Vallejo |
|---|---|
| Graduation year | 2009 |
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical groups
- Summit Healthcare AssociationShow Low, AZ · 77 clinicians
- Ccm HealthMontevideo, MN · 69 clinicians
- Carris Health LLCWillmar, MN · 38 clinicians
Hospital affiliations
- Centracare- Rice Memorial HospitalWillmar, MN
- Chippewa County HospitalMontevideo, MN
- Madison HospitalMadison, MN
- Meeker Memorial HospitalLitchfield, MN
- Summit Healthcare Regional Medical CenterShow Low, AZ
Industry payments (Open Payments)
- 2024$170.70 · 3 payments from 2 companies
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $152.04 | 2 |
| Janssen Biotech, Inc. | $18.66 | 1 |
What the 2024 payments were for
- Food and Beverage$170.70 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other hematologist-oncologists in Show Low
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