Dr. Dennis Pai Chan, MD
- Medicare services, 2024
- 2,321
- Medicare patients, 2024
- 270
- Part D claims, 2024
- 112
- Hospital affiliations
- 2
- Industry payments
- $564
- Practice address
- 800 W Central Road, Arlington Heights, IL 60005
- Practice phone
- Call (847) 618-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chan's professional email, personal email and mobile number
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Dr. Dennis Pai Chan is a radiation oncologist in Arlington Heights, Illinois
Dr. Chan practices at Northwest Community Hospital in Arlington Heights, Illinois, part of Endeavor Health.
Dr. Chan's NPI, 1679005243, was assigned on April 1, 2017. Dr. Chan graduated from Rush Medical College of Rush University in 2017. Dr. Chan holds Illinois license 125.071442.
- NPI
- 1679005243NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0345510020
- NPI enumeration date
- April 1, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (847) 618-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Dennis Pai Chan practices at Northwest Community Hospital in Arlington Heights, Illinois
Dr. Chan's primary practice is Northwest Community Hospital, at 800 W Central Road, Arlington Heights, IL 60005 in Cook County. The practice phone is (847) 618-1000.
- Northwest Community Hospital800 W Central Road, Arlington Heights, IL 60005 · Cook CountyPhone(847) 618-1000
Source: Dmand AI Affiliation Data
Dr. Dennis Pai Chan is affiliated with 3 sites of care and 1 medical group
Dr. Chan's primary practice is Northwest Community Hospital in Arlington Heights, Illinois, part of Endeavor Health. Dr. Chan is also affiliated with Swedish Hospital. The medical group on file is Radiation Oncology Associates. Dmand AI also links Dr. Chan to 1 more hospital outpatient department, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Dennis Pai Chan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chan practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwest Community Hospital | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Dennis Pai Chan is one of 243 radiation oncologists in Illinois
Radiation oncology is Dr. Chan's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dmand AI has Dr. Chan's licenses on file in 2 states: Illinois and Michigan.
Specialties and state licenses
- Radiation oncology, IllinoisPrimary
- Michigan license
Radiation oncologists near Dr. Chan
Counts of radiation oncologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Dennis Pai Chan billed Medicare for 2,321 services in 2024
CMS data shows 2,321 Medicare services from Dr. Chan across 20 procedure codes in 2024, for 270 Medicare patients. Medicare paid $174,267 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 2,2182024: 2,0657%
- Office and hospital visits
- 2023: 2102024: 25622%
Dr. Chan compared with the Illinois median for radiation oncologists, 2024
- Dr. Chan
- Illinois median
- Medicare services
- 2,321vs 1,45959% above
- Medicare patients
- 270vs 17653% above
- Part D claims
- 40vs 3418% above
Medians across 231 radiation oncologists in Illinois with Dmand AI profiles that report each measure.
Dr. Chan'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. Dennis Pai Chan treated 270 Medicare patients in 2024, average age 76
CMS counts 270 Medicare patients who saw Dr. Chan in 2024. The largest group is 65 to 74, with 122 patients. 75% of them have cancer, and 75% have high blood pressure. 8% are also on Medicaid. Their average risk score is 1.70, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Chan's median patient age at 72, with 66% women.
Dr. Chan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chan's Medicare patients by sex, 2024
- Women15557%
- Men11543%
Chronic conditions among Dr. Chan's Medicare patients, 2024
- Cancer75%
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Ischemic heart disease30%
- Diabetes27%
- COPD26%
- Anxiety25%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chan'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
- Women66%
- Men34%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Dennis Pai Chan wrote 112 Medicare Part D claims in 2024
In 2024, Dr. Chan wrote 112 Medicare Part D claims for 55 patients. 79% of them were for generic drugs. CMS names the drug for 40 of them, across 3 drugs with 11 or more claims each, at $454 in total drug cost. In 2023, CMS named 11 claims across 1 drug.
Dr. Chan's Part D claims by kind of drug, 2024
- Generic88 claims79%
- Brand-name24 claims21%
Dr. Chan'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. Chan's Part D claims, 2024
- Opioids16%18 of 112 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: 112024: 40264%
Drugs named by CMS: 3 in 2024, 1 in 2023.
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. Dennis Pai Chan takes part in Medicare
Dr. Chan 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. Dennis Pai Chan received $564 in industry payments from 2017 to 2025
CMS Open Payments shows 14 general payments to Dr. Chan from 9 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Siemens Medical Solutions USA, Inc. paid the most, $148.
General payments to Dr. Chan by program year, 2017 to 2025
Companies that paid Dr. Chan the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Dennis Pai Chan graduated from Rush Medical College of Rush University
Dr. Chan graduated from Rush Medical College of Rush University in 2017.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Dennis Pai Chan's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Dennis Pai Chan
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. Dennis Pai Chan's NPI number?
Dr. Dennis Pai Chan's NPI number is 1679005243. It was assigned on April 1, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Dennis Pai Chan?
Dr. Dennis Pai Chan is a radiation oncologist in Arlington Heights, Illinois. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).
Where does Dr. Dennis Pai Chan practice?
Dr. Chan practices at 800 W Central Road, Arlington Heights, IL 60005. Dr. Chan's primary practice is Northwest Community Hospital in Arlington Heights, Illinois, part of Endeavor Health. Dmand AI also links Dr. Chan to 1 hospital outpatient department.
What is Dr. Dennis Pai Chan's office phone number?
The practice phone on file for Dr. Chan is (847) 618-1000.
What is Dr. Dennis Pai Chan's medical license number?
Dr. Chan holds Illinois license 125.071442, one of the licenses on file in 2 states.
Which states has Dr. Dennis Pai Chan been licensed in?
Dmand AI has state licenses on file for Dr. Chan in Illinois and Michigan.
Which hospitals is Dr. Dennis Pai Chan affiliated with?
Dr. Chan practices at Northwest Community Hospital in Arlington Heights, Illinois. Dr. Chan is also affiliated with Swedish Hospital.
What medical group is Dr. Dennis Pai Chan part of?
Dr. Chan is linked to Radiation Oncology Associates.
Does Dr. Dennis Pai Chan accept Medicare?
Yes. CMS data shows Dr. Chan billed Medicare for 2,321 services in 2024, and Dr. Chan accepts Medicare assignment.
How many Medicare patients does Dr. Dennis Pai Chan see?
CMS counts 270 Medicare patients who saw Dr. Chan in 2024, with an average age of 76.
Show 5 more questionsShow fewer questions
What services does Dr. Dennis Pai Chan bill to Medicare?
In 2024, Dr. Chan's most billed Medicare services were radiation oncology (77014), radiation oncology (77300) and radiation oncology (77334).
Where did Dr. Dennis Pai Chan go to medical school?
Dr. Chan graduated from Rush Medical College of Rush University in 2017.
What drugs does Dr. Dennis Pai Chan prescribe most?
In 2024 Medicare Part D data, Dr. Chan's most prescribed drugs by claims were Pantoprazole Sodium, Ssd and Gabapentin.
Has Dr. Dennis Pai Chan received payments from drug or device companies?
CMS Open Payments shows $564 in general payments to Dr. Chan from 9 companies from 2017 to 2025. The largest total came from Siemens Medical Solutions USA, Inc.
How long has Dr. Dennis Pai Chan been practicing?
Dr. Chan graduated from medical school in 2017, 9 years ago.
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