WILLIAM JHONGHOON YOON M.D.
NPI 1720368657
Surgery - Vascular Surgery in Skokie, IL

Q: What is William Yoon's NPI number?

The NPI number for William Yoon is 1720368657. It was assigned to this individual provider in the NPPES registry on August 23, 2011.

Q: What is William Yoon's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Vascular Surgery, with taxonomy code 2086S0129X.

Q: When was this NPI record last updated?

The NPPES record for William Yoon was last updated on April 27, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since August 23, 2011PECOS EnrolledAccepts Medicare Assignment

79.48/100

CMS Quality Rating

9650 GROSS POINT RD STE 4900, SKOKIE, IL 60076(847) 663-8050(224) 251-4407 Get Directions Write a Review

NPPES record last updated: April 27, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 27, 2021, Sep 19, 2018, Jun 14, 2016 (3 updates tracked since 2016).

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About William Jhonghoon Yoon M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM JHONGHOON YOON M.D. (NPI 1720368657) is an individual vascular surgery provider in Skokie, Illinois, licensed in Illinois (036139697) and active in the NPI registry since August 2011. He is enrolled in Medicare PECOS, is affiliated with University Hospitals Samaritan Medical Center, and is a graduate of Virginia Commonwealth University, School Of Medicine (2011).

NPPES Registry Identity

NPI1720368657

Entity TypeIndividualMale

Primary Taxonomy2086S0129X

Provider Legal NameWILLIAM JHONGHOON YOONCredential: M.D.

Location Address9650 GROSS POINT RD STE 4900Skokie, IL 60076-5080

Mailing Address9650 Gross Point Rd Ste 4900Skokie, IL 60076-5080 · (847) 663-8050 · Fax (224) 251-4407

Phone(847) 663-8050

Fax(224) 251-4407

Sole ProprietorYes

Medical School CMSVirginia Commonwealth University, School Of MedicineGraduated 2011

Enumeration DateAugust 23, 2011

Last NPPES UpdateApril 27, 20213 updates tracked since enumeration

NPPES CertifiedApril 4, 2021

✔ NPI 1720368657 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgery · Vascular SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code2086S0129X

Licenses✔ Licensed in IL · 036139697✔ Licensed in CA · A157256

Definition

A surgeon with expertise in the management of surgical disorders of the blood vessels, excluding the intracranial vessels or the heart.

Also ListedSurgeryTaxonomy 208600000X · License A157256 (CA)

9650 GROSS POINT RD STE 4900, Skokie, IL 60076

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Antidote Health Plan of Ohio, Inc..Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

William Jhonghoon Yoon M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID547551715

PECOS Enrollment IDI20221007002191, I20260114001105, I20260114001537

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show William Yoon reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Endeavor Health Medical Group

2.8 mi

Allergy & Immunology

1000 CENTRAL ST
Evanston, IL 60201

Reassigned Medicare billing, Illinois enrollment
4,841 clinicians in this Medicare group

NPI 1497701882 (847) 570-5235

University Hospitals Medical Group Inc

319 mi

Multi-Specialty

11100 EUCLID AVE
Cleveland, OH 44106

Reassigned Medicare billing, Ohio enrollment
3,958 clinicians in this Medicare group

NPI 1669499414 (216) 844-1000

Medstar Medical Group II LLC

602 mi

Critical Care Medicine

3800 RESERVOIR RD NW
Washington, DC 20007

Reassigned Medicare billing, District of Columbia and Maryland enrollments
Also billed through NPI 1376887844 (Maryland)
3,530 clinicians in this Medicare group

NPI 1205562816 (703) 558-1403

Regents Of The Univ Of Ca

1,708 mi

Urogynecology and Reconstructive Pelvic Surgery

4860 Y ST
Sacramento, CA 95817

Reassigned Medicare billing, California enrollment
2,570 clinicians in this Medicare group

NPI 1285068783 (916) 734-6483

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 14

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Ultrasound of both sides of head and neck blood flow 93880

An ultrasound of the head and neck blood flow is a safe, non-invasive procedure that uses sound waves to create images of blood vessels. It helps detect abnormalities like blockages or clots, ensuring optimal blood flow.

87 services87 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

86 services64 patients

Ultrasound study of arm or leg veins with compression and maneuvers 93970

An ultrasound study of arm or leg veins with compression and maneuvers is a non-invasive procedure that uses sound waves to create images of your veins. This helps identify blood clots or other vein problems. During the procedure, pressure is applied to the veins and certain movements are performed to assess blood flow.

56 services56 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

51 services26 patients

Ultrasound study of one arm or leg veins with compression and maneuvers 93971

This is a non-invasive procedure using sound waves to visualize veins in an arm or leg. It involves applying gentle pressure and performing certain movements. It helps identify any abnormal blood flow or clots, ensuring vascular health.

48 services48 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

40 services40 patients

Ultrasound scan of abdominal aorta 76706

An ultrasound scan of the abdominal aorta is a non-invasive imaging test. It uses sound waves to create pictures of the main blood vessel in your abdomen, the aorta, to check its size and shape. This helps detect any abnormalities or issues early.

37 services37 patients

Ultrasound study of arm and leg arteries 93922

An ultrasound study of arm and leg arteries is a non-invasive procedure that uses sound waves to create images of your arteries. It helps in checking blood flow, identifying blockages, or detecting other abnormalities in your arteries.

37 services35 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

33 services32 patients

Complete ultrasound of aorta, vena cava, groin vessels or bypass grafts 93978

This procedure involves using sound waves to create images of your aorta, vena cava, groin vessels, or bypass grafts. It helps to detect abnormalities or blockages, ensuring your blood flows smoothly. It's painless and non-invasive.

31 services30 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

22 services20 patients

Complete ultrasound of abdomen and pelvis artery and vein blood flow 93975

This procedure uses sound waves to create images of your abdomen and pelvis, specifically focusing on the arteries and veins. It helps in assessing the blood flow and detecting any abnormalities, ensuring your overall well-being.

16 services16 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

14 services14 patients

Complete ultrasound study of arm and leg arteries 93923

This procedure involves using sound waves to produce images of your arm and leg arteries. It helps identify blockages or abnormalities that could lead to conditions like stroke or peripheral artery disease. It's non-invasive and painless.

13 services13 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

University Hospitals Samaritan Medical Center

Acute Care Hospitals · Ashland, OH

4/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number360002

Location1025 Center StAshland, OH 44805 · Ashland County

Parma Community General Hospital

Acute Care Hospitals · Parma, OH

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number360041

Location7007 Powers BoulevardParma, OH 44129 · Cuyahoga County

Uh Cleveland Medical Center

Acute Care Hospitals · Cleveland, OH

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number360137

Location11100 Euclid AvenueCleveland, OH 44106 · Cuyahoga County

Emergency services Birthing friendly

University Hospitals Ahuja Medical Center

Acute Care Hospitals · Beachwood, OH

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number360359

Location3999 Richmond RoadBeachwood, OH 44122 · Cuyahoga County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60076 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$94.06 typical visit price

range $60.08 – $183.39

Typical copayment $23.51 (range $15.02 – $45.84)

Most-billed visit code 99203

Established Patient

$74.80 typical visit price

range $18.97 – $148.12

Typical copayment $18.70 (range $4.74 – $37.03)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

79.48/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

68.51

Promoting Interoperability

100

Improvement Activities

Cost

63.09

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

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