Christopher M. Kellogg, MD
NPI 1740254457ActiveIndividual· Internal Medicine, Hematology & Oncology· Chandler, AZ
Internal Medicine, Hematology & Oncology (MD) in Chandler, Arizona, trained at Wayne State University School of Medicine (class of 1986). In 2024 Medicare paid $2,145,836 for 527 patients, and Part D covered 1,302 of their prescriptions, 78% of them generic. Janssen Biotech, Inc. was the largest of 9 companies reporting payments in 2025, $642.50 in all, mostly food and beverage.
Overview
| NPI | 1740254457 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 17, 2006 |
| 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 | 23612 | AZ |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 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 | 527 |
|---|---|
| Services billed | 112,649 across 94 procedure codes |
| Paid by Medicare | $2,145,836 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,302 · 2,107 30-day fills |
|---|---|
| Patients | 195 |
| Total drug cost | $3,041,504 |
| Generic share | 78% of claims |
Education and affiliations
| Medical school | Wayne State University School of Medicine |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- Ironwood Physicians PCChandler, AZ · 116 clinicians
Hospital affiliations
- Chandler Regional Medical CenterChandler, AZ
- Mercy Gilbert Medical CenterGilbert, AZ
Industry payments (Open Payments)
- 2025$642.50 · 30 payments from 9 companies
- 2024$703.09 · 40 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $139.63 | 6 |
| Novartis Pharmaceuticals Corporation | $132.04 | 6 |
| Celgene Corporation | $92.72 | 5 |
| Array Biopharma Inc | $79.00 | 4 |
| Abbvie Inc. | $62.75 | 3 |
What the 2025 payments were for
- Food and Beverage$543.50 · 29 payments
- Education$99.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Hematology & Oncology providers in Chandler
- 1447473376
- 1609187418
- 1063892297
- 1740269299
- 1114900479
- 1265846513
- 1215270947
- 1508973447
- 1053385765
- 1487871786
- 1508829094
- 1912168535
All Internal Medicine, Hematology & Oncology providers in Arizona →