David Youngsik Jun, MD
Internal Medicine Physician · Park Ridge, IL
David Youngsik Jun, MD is an internal medicine physician with a practice address in Park Ridge, Illinois, and NPI 1093735144, issued on Jul 20, 2006. Check the license (Illinois 036078305, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- David Youngsik Jun
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036078305 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2604 Dempster St, Park Ridge, IL 60068
- Phone
- (847) 627-5206
- Enumerated
- Jul 20, 2006
- Record last updated
- Dec 9, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (847) 627-5207
- Medicaid ID
- 036078305 IL
- Medicare enrollment
- Enrolled (PECOS I20031209000579); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 2604 Dempster St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify David Youngsik Jun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036078305Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.0 times the Medicare Part D claims of the average internal medicine physician in 2024
9,562 Medicare Part D claims for 782 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 23 claims were for opioids.
Most prescribed
- Atorvastatin Calcium952 claims
- Metformin Hcl610 claims
- Losartan-Hydrochlorothiazide549 claims
- Losartan Potassium543 claims
- Amlodipine Besylate501 claims
- Tamsulosin Hcl364 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $17.29
1 payment: food and beverage; the largest payer was Amgen Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Metropolitan Healthcare Partners PLLCChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Youngsik Jun among 7,238 internal medicine physician records in Illinois
David Youngsik Jun, MD is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 61% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1978 · median 2003 among the 3,580 with a school on file
- Record last updated2021 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
163 internal medicine physician records list a practice address in Park Ridge
They are 163 of the 2,577 NPPES records with a practice address in Park Ridge, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Park Ridge → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Voula Asimacopoulos, MDPark Ridge, IL 600681114920824
- Howard Becker, MDPark Ridge, IL 600681245269794
- Mark Conley, D.O.Park Ridge, IL 600681366471856
- Maribeth December, M.D.Park Ridge, IL 600681245275635
- Michael Greising, MDPark Ridge, IL 600681629071329
- Thomas Holmes, M.D.Park Ridge, IL 600681689603110
- Jaroslaw Leszczak, MDPark Ridge, IL 600681588606222
- Andrey Lev-Weissberg, MDPark Ridge, IL 600681245206655
Common questions
What is David Youngsik Jun, MD's NPI number?
David Youngsik Jun, MD's National Provider Identifier (NPI) is 1093735144, issued on Jul 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David Youngsik Jun, MD located?
The NPPES record lists a practice address at 2604 Dempster St, Park Ridge, IL, 60068. Phone: (847) 627-5206. Providers update this record themselves, so call before visiting.
How can I verify David Youngsik Jun, MD's license?
NPPES lists Illinois license number 036078305, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does David Youngsik Jun, MD prescribe under Medicare Part D?
In 2024, David Youngsik Jun, MD had 9,562 Medicare Part D claims for 782 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.