Ernest G. Chan
- Medicare patients, 2024
- 31
- Part D claims, 2017
- 12
- Hospital affiliations
- 1
- Industry payments
- $10,932
- Medical groups
- 3
- Practice address
- 5721 S Maryland Ave, Chicago, IL 60637
- Practice phone
- Call (773) 702-1530
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Comer Children's Hospital - Hyde Park
Chicago, Illinois
Find Ernest Chan's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Ernest G. Chan is a cardiothoracic surgeon in Chicago, Illinois
Ernest Chan practices at Comer Children's Hospital - Hyde Park in Chicago, Illinois.
Ernest Chan's NPI, 1467802371, was assigned on June 21, 2016. Ernest Chan holds Illinois license 036169977.
- NPI
- 1467802371NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7618415670
- NPI enumeration date
- June 21, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (773) 702-1530
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Ernest G. Chan practices at Comer Children's Hospital - Hyde Park in Chicago, Illinois
Ernest Chan's primary practice is Comer Children's Hospital - Hyde Park, at 5721 S Maryland Ave, Chicago, IL 60637 in Cook County. The practice phone is (773) 702-1530.
- Comer Children's Hospital - Hyde Park5721 S Maryland Ave, Chicago, IL 60637 · Cook CountyPhone(773) 702-1530
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Ernest G. Chan is affiliated with 2 sites of care and 3 medical groups
Ernest Chan's primary practice is Comer Children's Hospital - Hyde Park in Chicago, Illinois. Ernest Chan is also affiliated with University of Chicago Medical Center. The medical group on file is UChicago Medicine Physicians. Dmand AI also links Ernest Chan to 2 more medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Ernest G. Chan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Ernest Chan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Comer Children's Hospital - Hyde Park | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Ernest G. Chan is one of 208 cardiothoracic surgeons in Illinois
Thoracic surgery (cardiothoracic vascular surgery) is Ernest Chan's primary specialty in the NPI Registry, under taxonomy code 208G00000X. Ernest Chan is licensed in Illinois.
Specialties and state licenses
- Thoracic surgery (cardiothoracic vascular surgery), IllinoisPrimary
Cardiothoracic surgeons near Ernest Chan
Counts of cardiothoracic surgeons 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
Ernest G. Chan treated 31 Medicare patients in 2024, average age 70
CMS counts 31 Medicare patients who saw Ernest Chan in 2024. The largest group is 65 to 74, with 19 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 2.94, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Ernest Chan's median patient age at 70, with 52% women.
Ernest Chan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Ernest Chan's Medicare patients by sex, 2024
- Women1548%
- Men1652%
Chronic conditions among Ernest Chan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- COPD68%
- Ischemic heart disease61%
- Arthritis55%
- Chronic kidney disease52%
- Diabetes52%
- Heart failure45%
Share of Medicare patients with each condition. A patient can have several.
Ernest 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 70
Patient panel by sex, all payers
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Ernest G. Chan wrote 12 Medicare Part D claims in 2017
In 2017, Ernest Chan wrote 12 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $190 in total drug cost.
Ernest Chan's most prescribed drugs by claims, 2017
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Ernest G. Chan offers telehealth to Medicare patients
Ernest Chan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Ernest Chan as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Ernest G. Chan received $10,932 in industry payments from 2018 to 2025
CMS Open Payments shows 45 general payments to Ernest Chan from 12 drug and device companies from 2018 to 2025. Education make up the largest share, 51% of the total. Intuitive Surgical, Inc. paid the most, $6,970.
General payments to Ernest Chan by program year, 2018 to 2025
General payments to Ernest Chan by kind, 2018 to 2025
- Education$5,60851%
- Travel and lodging$2,17920%
- Food and beverage$1,91017%
- Grants$1,23511%
Companies that paid Ernest Chan the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Ernest G. 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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Ernest G. 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 Ernest G. Chan's NPI number?
Ernest G. Chan's NPI number is 1467802371. It was assigned on June 21, 2016, and it is active in the NPI Registry.
What does Ernest G. Chan specialize in?
Ernest G. Chan is a cardiothoracic surgeon in Chicago, Illinois. The primary specialty in the NPI Registry is Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (taxonomy code 208G00000X).
Where does Ernest G. Chan practice?
Ernest Chan practices at 5721 S Maryland Ave, Chicago, IL 60637. Ernest Chan's primary practice is Comer Children's Hospital - Hyde Park in Chicago, Illinois. Dmand AI also links Ernest Chan to 2 medical groups.
What is Ernest G. Chan's office phone number?
The practice phone on file for Ernest Chan is (773) 702-1530.
What is Ernest G. Chan's medical license number?
Ernest Chan holds Illinois license 036169977.
Which hospitals is Ernest G. Chan affiliated with?
Ernest Chan is affiliated with University of Chicago Medical Center.
What medical group is Ernest G. Chan part of?
Ernest Chan is linked to UChicago Medicine Physicians. Dmand AI links Ernest Chan to 2 more medical groups.
Does Ernest G. Chan accept Medicare?
Yes. CMS lists Ernest Chan as accepting Medicare assignment.
Does Ernest G. Chan offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Ernest Chan as offering telehealth services.
How many Medicare patients does Ernest G. Chan see?
CMS counts 31 Medicare patients who saw Ernest Chan in 2024, with an average age of 70.
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What drugs does Ernest G. Chan prescribe most?
In 2017 Medicare Part D data, Ernest Chan's most prescribed drugs by claims were Oxycodone HCl.
Has Ernest G. Chan received payments from drug or device companies?
CMS Open Payments shows $10,932 in general payments to Ernest Chan from 12 companies from 2018 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Ernest G. Chan been practicing?
Ernest Chan graduated from medical school in 2015, 11 years ago.
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