Yoon Wook Chun, MD
Obstetrics & Gynecology Physician · Green Bay, WI
Yoon Wook Chun, MD is an obstetrics & gynecology physician with a practice address in Green Bay, Wisconsin, and NPI 1518046499, issued on Nov 3, 2006. Check the license (Wisconsin 43350020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Yoon Wook Chun
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- 43350020 WI
43350-20 WI
Self-reported in NPPES; status is on the state search - Practice location
- 720 S Vanburen St, Green Bay, WI 54301
- Phone
- (920) 433-3420
- Enumerated
- Nov 3, 2006
- Record last updated
- Aug 20, 2025
- Fax
- (920) 338-6859
- Medicaid ID
- 34089900 WI
- Medicare enrollment
- Enrolled (PECOS I20111031000133); accepts Medicare assignment
- Medical or professional school
- Wayne State University School Of Medicine, 1995
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 796 in Wisconsin → Look up another NPI →
Also registered at 720 S Vanburen St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carmen Anderson, APNPFamily Nurse Practitioner1255683850
- Cheryl Bailey, M.D.Obstetrics & Gynecology Physician1083682876
- Namratta Burmeister, DOObstetrics & Gynecology Physician1336634625
- Ferdinand Casis, MD,FACEEndocrinology, Diabetes & Metabolism Physician1841209806
- Nicholas Coorough, M.D.Surgery Physician1689010118
- Jennifer Cumicek, APNPFamily Nurse Practitioner1285181818
Verify Yoon Wook Chun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 43350020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9.8 times the Medicare Part D claims of the average obstetrics & gynecology physician in 2024
1,617 Medicare Part D claims for 447 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims. 119 claims were for opioids.
Most prescribed
- Estradiol363 claims
- Myrbetriq258 claims
- Solifenacin Succinate156 claims
- Tramadol Hcl107 claims
- Gemtesa94 claims
- Sulfamethoxazole-Trimethoprim92 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: $227.74
6 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, Inc. The 21,429 providers of this specialty with any payment received $1,030.61 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
- Bellin Memorial Hospital IncGreen Bay, WI
- Oconto Hospital And Medical Center IncMarinette, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Yoon Wook Chun among 796 obstetrics & gynecology physician records in Wisconsin
Yoon Wook Chun, MD is one of 796 obstetrics & gynecology physician records with a practice address in Wisconsin. 71% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 47% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1995 · median 2007 among the 478 with a school on file
- Record last updated2025 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Wisconsin
There are 796 obstetrics & gynecology physician records in Wisconsin.
All 796 in Wisconsin → Every provider in Green Bay → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Cheryl Bailey, M.D.Green Bay, WI 543011083682876
- Namratta Burmeister, DOGreen Bay, WI 543011336634625
- Kristin Clark, M.D.Green Bay, WI 543011710982756
- Robert Demott, MDGreen Bay, WI 543011861570996
- Deborah Fischer, MDGreen Bay, WI 543011861418725
- Meghan Freund, M.D.Green Bay, WI 543011811301831
- Ryan Kuefler, M.D.Green Bay, WI 543011902210925
- Erich Metzler, MDGreen Bay, WI 543011770516981
Common questions
What is Yoon Wook Chun, MD's NPI number?
Yoon Wook Chun, MD's National Provider Identifier (NPI) is 1518046499, issued on Nov 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Yoon Wook Chun, MD located?
The NPPES record lists a practice address at 720 S Vanburen St, Green Bay, WI, 54301. Phone: (920) 433-3420. Providers update this record themselves, so call before visiting.
How can I verify Yoon Wook Chun, MD's license?
NPPES lists Wisconsin license number 43350020, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Yoon Wook Chun, MD prescribe under Medicare Part D?
In 2024, Yoon Wook Chun, MD had 1,617 Medicare Part D claims for 447 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.