Dr. Charles Woo, MD

  • Chandler, AZ
  • Radiation oncologist
NPI1811961543PAC ID4385686211
Medicare services, 2024
6,168
Medicare patients, 2024
380
Part D claims, 2024
227
Industry payments
$12,568
Affiliated sites
3
Practice address
695 S Dobson Rd, Chandler, AZ 85224
Practice phone
Call (480) 821-2838
Professional email
Get professional email
Personal email
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Mobile number
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Social profiles

Primary practice

Ironwood Cancer & Research Centers

Chandler, Arizona

See all 7 affiliations

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Dr. Charles Woo is a radiation oncologist in Chandler, Arizona

Dr. Woo practices at Ironwood Cancer & Research Centers in Chandler, Arizona.

Dr. Woo's NPI, 1811961543, was assigned on February 17, 2006. Dr. Woo graduated from Northwestern University Feinberg Medical School in 1992. Dr. Woo holds Arizona license 21992.

NPI and contact details
Medicare PAC ID
4385686211
NPI enumeration date
February 17, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(480) 821-2838
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Male
Estimated age
60
Medical school graduation
1992

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Charles Woo practices at Ironwood Cancer & Research Centers in Chandler, Arizona

Dr. Woo's primary practice is Ironwood Cancer & Research Centers, at 695 S Dobson Rd, Chandler, AZ 85224 in Maricopa County. The practice phone is (480) 821-2838.

  • Ironwood Cancer & Research Centers
    695 S Dobson Rd, Chandler, AZ 85224 · Maricopa CountyPhone(480) 821-2838

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Charles Woo is affiliated with 4 sites of care and 3 medical groups

Dr. Woo's primary practice is Ironwood Cancer & Research Centers in Chandler, Arizona. The medical group on file is Ironwood Cancer & Research Centers. Dmand AI also links Dr. Woo to 3 more group practices and clinics and 2 medical groups, each named with a free account.

See all 7 affiliations for Dr. Woo

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Charles Woo's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Woo practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Ironwood Cancer & Research CentersAvailable with a free account
+3 more sites and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Charles Woo is one of 141 radiation oncologists in Arizona

Radiation oncology is Dr. Woo's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Woo is licensed in Arizona.

Specialties and state licenses

  • Radiation oncology, ArizonaPrimaryLicense 21992 · taxonomy 2085R0001X

Radiation oncologists near Dr. Woo

Counts of radiation oncologists with a Dmand AI profile, by place and practice. Each opens the list.

141radiation oncologists in Arizona
2radiation oncologists in Chandler

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Charles Woo billed Medicare for 6,168 services in 2024

CMS data shows 6,168 Medicare services from Dr. Woo across 23 procedure codes in 2024, for 380 Medicare patients. Medicare paid $1,134,064 for them. Every service was in an office.

Medicare services, 20246,168
Medicare patients380
Paid by Medicare$1.1M
Procedure codes23

Dr. Woo's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Imaging
2023: 4,6412024: 3,53824%
Other services
2023: 2,7972024: 2,30218%
Office and hospital visits
2023: 4212024: 32822%

Dr. Woo compared with the Arizona median for radiation oncologists, 2024

  • Dr. Woo
  • Arizona median
Medicare services
6,168vs 2,0723.0 times
Medicare patients
380vs 22867% above
Part D claims
137vs 443.1 times

Medians across 141 radiation oncologists in Arizona with Dmand AI profiles that report each measure.

Dr. Woo's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Charles Woo treated 380 Medicare patients in 2024, average age 76

CMS counts 380 Medicare patients who saw Dr. Woo in 2024. The largest group is 75 to 84, with 178 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.47, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Woo's median patient age at 72, with 46% women.

Medicare patients, 2024380
Average age76
Average risk score1.47

Dr. Woo's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Woo's Medicare patients by sex, 2024

  • Women18749%
  • Men19351%

Chronic conditions among Dr. Woo's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Cancer72%
  4. Arthritis43%
  5. Ischemic heart disease32%
  6. Chronic kidney disease31%
  7. Diabetes28%
  8. Anxiety19%

Share of Medicare patients with each condition. A patient can have several.

Dr. Woo's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 72

Patient panel by sex, all payers

  • Women46%
  • Men53%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Charles Woo wrote 227 Medicare Part D claims in 2024

In 2024, Dr. Woo wrote 227 Medicare Part D claims for 94 patients. 100% of them were for generic drugs. CMS names the drug for 137 of them, across 4 drugs with 11 or more claims each, at $2,596 in total drug cost. In 2023, CMS named 145 claims across 5 drugs.

Part D claims, 2024227
Drugs named by CMS4
Total drug cost$2,596
Part D patients94

Dr. Woo's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Woo's Part D claims, 2024

  • Opioids16%37 of 227 claims
  • Antibiotics14%31 of 227 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 1452024: 1376%

Drugs named by CMS: 4 in 2024, 5 in 2023.

See all prescribing by Dr. Woo

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

How Dr. Charles Woo takes part in Medicare

Dr. Woo accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Charles Woo received $12,568 in industry payments from 2016 to 2025

CMS Open Payments shows 654 general payments to Dr. Woo from 77 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Novartis Pharmaceuticals Corporation paid the most, $1,535.

General payments to Dr. Woo by program year, 2016 to 2025

General payments to Dr. Woo by kind, 2016 to 2025

$12.6Kin total
  • Food and beverage$12,27498%
  • Travel and lodging$2942%

Companies that paid Dr. Woo the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Woo

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Charles Woo graduated from Northwestern University Feinberg Medical School

Dr. Woo graduated from Northwestern University Feinberg Medical School in 1992.

  1. Medical schoolNorthwestern University Feinberg Medical School

Source: Dmand AI Professional Profile Data

Sources for Dr. Charles Woo's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Charles Woo

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Charles Woo's NPI number?

Dr. Charles Woo's NPI number is 1811961543. It was assigned on February 17, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Charles Woo?

Dr. Charles Woo is a radiation oncologist in Chandler, Arizona. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).

Where does Dr. Charles Woo practice?

Dr. Woo practices at 695 S Dobson Rd, Chandler, AZ 85224. Dr. Woo's primary practice is Ironwood Cancer & Research Centers in Chandler, Arizona. Dmand AI also links Dr. Woo to 3 group practices and clinics and 2 medical groups.

What is Dr. Charles Woo's office phone number?

The practice phone on file for Dr. Woo is (480) 821-2838.

What is Dr. Charles Woo's medical license number?

Dr. Woo holds Arizona license 21992.

What medical group is Dr. Charles Woo part of?

Dr. Woo is linked to Ironwood Cancer & Research Centers. Dmand AI links Dr. Woo to 2 more medical groups.

Does Dr. Charles Woo accept Medicare?

Yes. CMS data shows Dr. Woo billed Medicare for 6,168 services in 2024, and Dr. Woo accepts Medicare assignment.

How many Medicare patients does Dr. Charles Woo see?

CMS counts 380 Medicare patients who saw Dr. Woo in 2024, with an average age of 76.

What services does Dr. Charles Woo bill to Medicare?

In 2024, Dr. Woo's most billed Medicare services were radiation oncology (77014), medicare service (G6015) and medicare service (G6012).

Where did Dr. Charles Woo go to medical school?

Dr. Woo graduated from Northwestern University Feinberg Medical School in 1992.

Show 3 more questionsShow fewer questions

What drugs does Dr. Charles Woo prescribe most?

In 2024 Medicare Part D data, Dr. Woo's most prescribed drugs by claims were Tamsulosin HCl, Pentoxifylline and Lidocaine HCl Viscous.

Has Dr. Charles Woo received payments from drug or device companies?

CMS Open Payments shows $12,568 in general payments to Dr. Woo from 77 companies from 2016 to 2025. The largest total came from Novartis Pharmaceuticals Corporation.

How long has Dr. Charles Woo been practicing?

Dr. Woo graduated from medical school in 1992, 34 years ago.

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