Charles Woo, MD
NPI 1811961543ActiveIndividual· Radiology, Radiation Oncology· Chandler, AZ
Radiology, Radiation Oncology (MD) in Chandler, Arizona, trained at Northwestern University Feinberg Medical School (class of 1992). 380 Medicare patients in 2024, $1,141,891 paid; all of their 227 Part D prescriptions were generic. Abbott Laboratories was the largest of 33 companies reporting payments in 2025, $2,495 in all, mostly food and beverage.
Overview
| NPI | 1811961543 |
|---|---|
| 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 |
|---|---|---|---|
| Radiology, Radiation Oncology Primary | 2085R0001X | 21992 | 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 - Radiation Oncology (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 380 |
|---|---|
| Services billed | 6,571 across 39 procedure codes |
| Paid by Medicare | $1,141,891 |
Part D prescriptions in 2024
| Prescriptions (claims) | 227 · 342 30-day fills |
|---|---|
| Patients | 94 |
| Total drug cost | $4,484 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Northwestern University Feinberg Medical School |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Radiation Oncology |
Medical group
- Ironwood Physicians PCChandler, AZ · 116 clinicians
Industry payments (Open Payments)
- 2025$2,495 · 102 payments from 33 companies
- 2024$1,381 · 65 payments from 28 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $293.63 | 2 |
| Novartis Pharmaceuticals Corporation | $258.07 | 12 |
| Astrazeneca Pharmaceuticals LP | $235.55 | 8 |
| Janssen Biotech, Inc. | $182.98 | 10 |
| Daiichi Sankyo Inc. | $167.35 | 8 |
What the 2025 payments were for
- Food and Beverage$2,202 · 100 payments
- Travel and Lodging$293.63 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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