Dr. Jack C. Leong, MD
- Medicare services, 2024
- 167
- Medicare patients, 2024
- 43
- Part D claims, 2024
- 1,381
- Hospital affiliations
- 2
- Industry payments
- $4,477
- Practice address
- 3000 N Cicero Ave, Chicago, IL 60641-5106
- Practice phone
- Call (773) 282-3115
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
EPIC Health - Chicago Center
Physician office · Chicago, Illinois
Find Dr. Leong'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.
Dr. Jack C. Leong is a pediatrician in Chicago, Illinois
Dr. Leong practices at EPIC Health - Chicago Center in Chicago, Illinois.
Dr. Leong's NPI, 1174506513, was assigned on November 21, 2005. Dr. Leong holds Illinois license 036070436.
- NPI
- 1174506513NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2062416381
- NPI enumeration date
- November 21, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (773) 282-3115
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jack C. Leong practices at EPIC Health - Chicago Center in Chicago, Illinois
Dr. Leong's primary practice is EPIC Health - Chicago Center, at 3000 N Cicero Ave, Chicago, IL 60641-5106. The practice phone is (773) 282-3115.
- EPIC Health - Chicago Center3000 N Cicero Ave, Chicago, IL 60641-5106Phone(773) 282-3115
Source: Dmand AI Affiliation Data
Dr. Jack C. Leong is affiliated with 4 sites of care and 1 medical group
Dr. Leong's primary practice is EPIC Health - Chicago Center in Chicago, Illinois. Dr. Leong is also affiliated with Humboldt Park Health. The medical group on file is EPIC Health. Dmand AI also links Dr. Leong to 1 more hospital and 1 group practice or clinic, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Jack C. Leong's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leong practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| EPIC Health - Chicago Center | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jack C. Leong is one of 2,423 pediatricians in Illinois
Pediatrics is Dr. Leong's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Leong is licensed in Illinois.
Specialties and state licenses
- Pediatrics, IllinoisPrimary
Pediatricians near Dr. Leong
Counts of pediatricians 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. Jack C. Leong billed Medicare for 167 services in 2024
CMS data shows 167 Medicare services from Dr. Leong across 2 procedure codes in 2024, all of them office visits, for 43 Medicare patients. Medicare paid $12,738 for them. Every service was in an office.
Dr. Leong's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1802024: 1677%
Dr. Leong compared with the Illinois median for pediatricians, 2024
- Dr. Leong
- Illinois median
- Medicare services
- 167vs 160Close to median
- Medicare patients
- 43vs 8248% below
- Part D claims
- 998vs 2245.4 times
Medians across 297 pediatricians in Illinois with Dmand AI profiles that report each measure.
Dr. Leong'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Leong and other pediatricians in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jack C. Leong treated 43 Medicare patients in 2024, average age 70
CMS counts 43 Medicare patients who saw Dr. Leong in 2024. The largest group is 65 to 74, with 18 patients. 60% of them have high blood pressure, and 58% have diabetes. 58% are also on Medicaid. Their average risk score is 1.05, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Leong's median patient age at 33, with 43% women.
Dr. Leong's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Leong's Medicare patients by sex, 2024
- Women1637%
- Men2763%
Chronic conditions among Dr. Leong's Medicare patients, 2024
- High blood pressure60%
- Diabetes58%
- High cholesterol53%
Share of Medicare patients with each condition. A patient can have several.
Dr. Leong's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 33
Patient panel by sex, all payers
- Women43%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jack C. Leong wrote 1,381 Medicare Part D claims in 2024
In 2024, Dr. Leong wrote 1,381 Medicare Part D claims for 103 patients. 80% of them were for generic drugs. CMS names the drug for 998 of them, across 36 drugs with 11 or more claims each, at $113,625 in total drug cost. In 2023, CMS named 813 claims across 30 drugs.
Dr. Leong's Part D claims by kind of drug, 2024
- Generic1,100 claims80%
- Brand-name250 claims18%
- Other31 claims2%
Dr. Leong'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. Leong's Part D claims, 2024
- Antibiotics3%37 of 1,381 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: 8132024: 99823%
Drugs named by CMS: 36 in 2024, 30 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. Jack C. Leong takes part in Medicare
Dr. Leong 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. Jack C. Leong received $4,477 in industry payments from 2016 to 2025
CMS Open Payments shows 93 general payments to Dr. Leong from 15 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Novartis Pharmaceuticals Corporation paid the most, $916.
General payments to Dr. Leong by program year, 2016 to 2025
General payments to Dr. Leong by kind, 2016 to 2025
- Food and beverage$4,470100%
- Travel and lodging$70%
Companies that paid Dr. Leong the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Jack C. Leong'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 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) |
| 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. Jack C. Leong
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. Jack C. Leong's NPI number?
Dr. Jack C. Leong's NPI number is 1174506513. It was assigned on November 21, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Jack C. Leong?
Dr. Jack C. Leong is a pediatrician in Chicago, Illinois. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. Jack C. Leong practice?
Dr. Leong practices at 3000 N Cicero Ave, Chicago, IL 60641-5106. Dr. Leong's primary practice is EPIC Health - Chicago Center in Chicago, Illinois. Dmand AI also links Dr. Leong to 1 hospital and 1 group practice or clinic.
What is Dr. Jack C. Leong's office phone number?
The practice phone on file for Dr. Leong is (773) 282-3115.
What is Dr. Jack C. Leong's medical license number?
Dr. Leong holds Illinois license 036070436.
Which hospitals is Dr. Jack C. Leong affiliated with?
Dr. Leong is affiliated with Humboldt Park Health. Dmand AI links Dr. Leong to 1 more hospital.
What medical group is Dr. Jack C. Leong part of?
Dr. Leong is linked to EPIC Health.
Does Dr. Jack C. Leong accept Medicare?
Yes. CMS data shows Dr. Leong billed Medicare for 167 services in 2024, and Dr. Leong accepts Medicare assignment.
How many Medicare patients does Dr. Jack C. Leong see?
CMS counts 43 Medicare patients who saw Dr. Leong in 2024, with an average age of 70.
What services does Dr. Jack C. Leong bill to Medicare?
In 2024, Dr. Leong's most billed Medicare services were office visit, established patient (99214) and office visit, established patient (99213).
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What drugs does Dr. Jack C. Leong prescribe most?
In 2024 Medicare Part D data, Dr. Leong's most prescribed drugs by claims were Simvastatin, Lisinopril and Metformin HCl.
Has Dr. Jack C. Leong received payments from drug or device companies?
CMS Open Payments shows $4,477 in general payments to Dr. Leong from 15 companies from 2016 to 2025. The largest total came from Novartis Pharmaceuticals Corporation.
How long has Dr. Jack C. Leong been practicing?
Dr. Leong graduated from medical school in 1982, 44 years ago.
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