Dr. John Junhaeng Lee, MD
- Medicare services, 2019
- 206
- Part D claims, 2024
- 920
- Hospital affiliations
- 2
- Industry payments
- $2,202
- Medical groups
- 3
- Practice address
- 751 N Rutledge St, Grandview, IL 62702
- Practice phone
- Call (217) 545-6523
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
SIU Center for Family Medicine Springfield - Grandview
FQHC - Main Site · Grandview, Illinois
Find Dr. Lee's professional email, personal email and mobile number
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Dr. John Junhaeng Lee is an internist in Springfield, Illinois
Dr. Lee practices at SIU Center for Family Medicine Springfield - Grandview in Grandview, Illinois.
Dr. Lee's NPI, 1336374297, was assigned on May 21, 2009. Dr. Lee holds Illinois license 036.1481119.
- NPI
- 1336374297NPI Registry (opens in a new tab)
- NPI enumeration date
- May 21, 2009
- NPI status
- Active
- Practice phone
- (217) 545-6523
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. John Junhaeng Lee practices at SIU Center for Family Medicine Springfield - Grandview in Grandview, Illinois
Dr. Lee's primary practice is SIU Center for Family Medicine Springfield - Grandview, at 751 N Rutledge St, Grandview, IL 62702. The practice phone is (217) 545-6523.
- SIU Center for Family Medicine Springfield - Grandview751 N Rutledge St, Grandview, IL 62702Phone(217) 545-6523
Source: Dmand AI Affiliation Data
Dr. John Junhaeng Lee is affiliated with 3 sites of care and 3 medical groups
Dr. Lee's primary practice is SIU Center for Family Medicine Springfield - Grandview in Grandview, Illinois. Dr. Lee is also affiliated with Springfield Memorial Hospital. The medical group on file is SIU Center for Family Medicine. Dmand AI also links Dr. Lee to 1 more hospital and 2 medical groups, each named with a free account. Dr. Lee's employer is on file too: a community health center (fqhc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Junhaeng Lee's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lee practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| SIU Center for Family Medicine Springfield - Grandview | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Junhaeng Lee is one of 5,652 internists in Illinois
Internal medicine is Dr. Lee's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Lee's licenses on file in 3 states: Illinois, Indiana and Virginia.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
- Hospitalist, Indiana
- Virginia license
Internists near Dr. Lee
Counts of internists 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. John Junhaeng Lee billed Medicare for 206 services in 2019
CMS data shows 206 Medicare services from Dr. Lee across 3 procedure codes in 2019. Medicare paid $26,229 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Lee compared with the Illinois median for internists, 2019
- Dr. Lee
- Illinois median
- Medicare services
- 206vs 56664% below
- Part D claims
- 462vs 28463% above
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. Lee's most billed Medicare procedure codes, 2019
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Lee?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Lee and other internists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Junhaeng Lee's patients have a median age of 69
Across all payers, Dmand AI patient panel data puts Dr. Lee's median patient age at 69, with 51% women.
Dr. Lee's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women51%
- Men49%
Source: Dmand AI Patient Panel Data
Dr. John Junhaeng Lee wrote 920 Medicare Part D claims in 2024
In 2024, Dr. Lee wrote 920 Medicare Part D claims for 278 patients. 90% of them were for generic drugs. CMS names the drug for 462 of them, across 22 drugs with 11 or more claims each, at $6,297 in total drug cost. In 2021, CMS named 121 claims across 8 drugs.
Dr. Lee's Part D claims by kind of drug, 2024
- Generic824 claims90%
- Brand-name96 claims10%
Dr. Lee'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. Lee's Part D claims, 2024
- Opioids10%95 of 920 claims
- Antibiotics2%20 of 920 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, 2021 to 2024
- 2021
- 2024
- Claims for drugs CMS names
- 2021: 1212024: 462282%
Drugs named by CMS: 22 in 2024, 8 in 2021.
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
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Dr. John Junhaeng Lee received $2,202 in industry payments from 2016 to 2025
CMS Open Payments shows 35 general payments to Dr. Lee from 8 drug and device companies from 2016 to 2025. Travel and lodging make up the largest share, 59% of the total. Merck Sharp & Dohme Corporation paid the most, $757.
General payments to Dr. Lee by program year, 2016 to 2025
General payments to Dr. Lee by kind, 2016 to 2025
- Travel and lodging$1,29159%
- Food and beverage$91141%
Companies that paid Dr. Lee 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. John Junhaeng Lee'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 Data |
| 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) |
| 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. John Junhaeng Lee
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. John Junhaeng Lee's NPI number?
Dr. John Junhaeng Lee's NPI number is 1336374297. It was assigned on May 21, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. John Junhaeng Lee?
Dr. John Junhaeng Lee is an internist in Springfield, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. John Junhaeng Lee practice?
Dr. Lee practices at 751 N Rutledge St, Grandview, IL 62702. Dr. Lee's primary practice is SIU Center for Family Medicine Springfield - Grandview in Grandview, Illinois. Dmand AI also links Dr. Lee to 1 hospital and 2 medical groups.
What is Dr. John Junhaeng Lee's office phone number?
The practice phone on file for Dr. Lee is (217) 545-6523.
What is Dr. John Junhaeng Lee's medical license number?
Dr. Lee holds Illinois license 036.1481119, one of the licenses on file in 3 states.
Which states has Dr. John Junhaeng Lee been licensed in?
Dmand AI has state licenses on file for Dr. Lee in Illinois, Indiana and Virginia.
Which hospitals is Dr. John Junhaeng Lee affiliated with?
Dr. Lee is affiliated with Springfield Memorial Hospital. Dmand AI links Dr. Lee to 1 more hospital.
What medical group is Dr. John Junhaeng Lee part of?
Dr. Lee is linked to SIU Center for Family Medicine. Dmand AI links Dr. Lee to 2 more medical groups.
Does Dr. John Junhaeng Lee accept Medicare?
Yes. CMS data shows Dr. Lee billed Medicare for 206 services in 2019.
What services does Dr. John Junhaeng Lee bill to Medicare?
In 2019, Dr. Lee's most billed Medicare services were hospital inpatient care (99222), hospital inpatient care (99223) and medical service (99219).
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What drugs does Dr. John Junhaeng Lee prescribe most?
In 2024 Medicare Part D data, Dr. Lee's most prescribed drugs by claims were Atorvastatin Calcium, Omeprazole and Hydrocodone-Acetaminophen.
Has Dr. John Junhaeng Lee received payments from drug or device companies?
CMS Open Payments shows $2,202 in general payments to Dr. Lee from 8 companies from 2016 to 2025. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. John Junhaeng Lee been practicing?
Dr. Lee graduated from medical school in 2009, 17 years ago.
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