Charles Woo, MD
NPI 1811961543 · Radiation Oncology Physician · Chandler, AZ
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Woo, MD is a Radiation Oncology Physician provider in Chandler, AZ (NPI 1811961543).
Provider details
- NPI number
- 1811961543
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 21992 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
6,168 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 1,594 | $116 |
| Intensity Modulated Treatment Delivery, Single Or Multiple Fields/Arcs,via Narrow Spatially and Temporally Modulated Beams, Binary, Dynamic Mlc, Per Treatment SessionG6015 | 1,540 | $335 |
| Radiation Treatment Delivery,3 Or More Separate Treatment Areas, Custom Blocking, Tangential Ports, Wedges, Rotational Beam, Compensators, Electron Beam; 6-10 MevG6012 | 622 | $221 |
| Continuing Radiation Therapy Consultation Per Week77336 | 451 | $85 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 399 | $185 |
| Calculation of Radiation Therapy Dose77300 | 304 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 64 | 22 |
| Pentoxifylline | 27 | — |
| Lidocaine Hclbrand: Lidocaine Hcl Viscous | 26 | 18 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 20 | 16 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,381 across 65 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-17
- Last updated
- 2022-11-15
- Certified
- 2022-11-15
Frequently asked questions
- What is Charles Woo's NPI number?
- Charles Woo's National Provider Identifier (NPI) is 1811961543, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Woo's specialty?
- Charles Woo is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Woo located?
- Charles Woo's practice location on file with NPPES is 695 S Dobson Rd, Chandler, AZ 85224-5665.
- What is Charles Woo's phone number?
- The practice phone number listed in the NPPES registry for Charles Woo is (480) 821-2838.
- Does Charles Woo accept Medicare?
- Charles Woo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Woo's NPI active?
- Yes — Charles Woo's NPI (1811961543) is active in the NPPES registry as of the last update on 2022-11-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.