William Jhonghoon Yoon, M.D.
Vascular Surgery Physician · Skokie, IL
William Jhonghoon Yoon, M.D. is a vascular surgery physician with a practice address in Skokie, Illinois, and NPI 1720368657, issued on Aug 23, 2011. Check the license (Illinois 036139697, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- William Jhonghoon Yoon
- Credential
- M.D.
- Primary taxonomy
- Vascular Surgery Physician 2086S0129X
- License numbers
- 036139697 IL
A157256 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9650 Gross Point RD Ste 4900, Skokie, IL 60076
- Phone
- (847) 663-8050
- Enumerated
- Aug 23, 2011
- Record last updated
- Apr 27, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (224) 251-4407
- Medicare enrollment
- Enrolled (PECOS I20260114001537); accepts Medicare assignment
- Medical or professional school
- Virginia Commonwealth University, School Of Medicine, 2011
- Entity
- Type 1 · individual
8 nearest vascular surgery physician records → All 197 in Illinois → Look up another NPI →
Also registered at 9650 Gross Point RD Ste 4900
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Edwina Abloh, APN-CNPNurse Practitioner1689314098
- Bruce Bergelson, MDCardiovascular Disease Physician1780795724
- Maunil Bhatt, MDVascular Surgery Physician1710321989
- Jennifer Bonnke, APN-CNPNurse Practitioner1932952355
- Abed Dehnee, MDInterventional Cardiology Physician1285778472
- Rym El Khoury, MDVascular Surgery Physician1497142129
Verify William Jhonghoon Yoon 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 036139697Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average vascular surgery physician in 2024
61 Medicare Part D claims for 19 beneficiaries, against an average of 201 among the 3,936 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium24 claims
- Clopidogrel24 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 79.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $4,508.78
39 payments; by number, the most common kind was food and beverage; the largest payer was W. L. Gore & Associates, Inc. The 4,059 providers of this specialty with any payment received $6,178.00 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 2 group practices
- Medstar Medical Group II LLCWashington, DC
- University Hospitals Medical Group IncCleveland, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Jhonghoon Yoon among 197 vascular surgery physician records in Illinois
William Jhonghoon Yoon, M.D. is one of 197 vascular surgery physician records with a practice address in Illinois. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 59% of them.
- NPI issued2011 · 59% of these records are older, 38% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2011 · median 2005 among the 132 with a school on file
- Record last updated2021 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086S0129X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Vascular Surgery Physician providers in Illinois
There are 197 vascular surgery physician records in Illinois.
All 197 in Illinois → Every provider in Skokie → Vascular Surgery Physician nationwide →
The 8 vascular surgery physician records with the nearest ZIP codes
- Maunil Bhatt, MDSkokie, IL 600761710321989
- Rym El Khoury, MDSkokie, IL 600761497142129
- Cheong Lee, M.D.Skokie, IL 600761699851915
- Benjamin Lind, M.D.Skokie, IL 600761649431776
- Nancy Schindler, MDSkokie, IL 600771043318223
- Atif Baqai, M.D.Park Ridge, IL 600681508066192
- Chad Jacobs, MDPark Ridge, IL 600681801909213
- Biraaj Mahajan, MDPark Ridge, IL 600681063049807
Common questions
What is William Jhonghoon Yoon, M.D.'s NPI number?
William Jhonghoon Yoon, M.D.'s National Provider Identifier (NPI) is 1720368657, issued on Aug 23, 2011. An NPI identifies a provider in billing; it is not a license.
Where is William Jhonghoon Yoon, M.D. located?
The NPPES record lists a practice address at 9650 Gross Point RD Ste 4900, Skokie, IL, 60076. Phone: (847) 663-8050. Providers update this record themselves, so call before visiting.
How can I verify William Jhonghoon Yoon, M.D.'s license?
NPPES lists Illinois license number 036139697, 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 William Jhonghoon Yoon, M.D. prescribe under Medicare Part D?
In 2024, William Jhonghoon Yoon, M.D. had 61 Medicare Part D claims for 19 beneficiaries; the average among vascular surgery physician prescribers was 201. Part D covers Medicare prescriptions only.
What is William Jhonghoon Yoon, M.D.'s MIPS final score?
The 2023 MIPS final score is 79.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.