Unchu Ko, M.D.
Internal Medicine Physician · Milwaukee, WI
Unchu Ko, M.D. is an internal medicine physician with a practice address in Milwaukee, Wisconsin, and NPI 1063466886, issued on May 19, 2006. Check the license (Wisconsin 42064, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Unchu Ko
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 42064 WI
Self-reported in NPPES; status is on the state search - Practice location
- 788 N Jefferson St, Milwaukee, WI 53202
- Phone
- (414) 272-8950
- Enumerated
- May 19, 2006
- Record last updated
- Nov 9, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (414) 272-0859
- Medicaid ID
- 1063466886 WI
- Medicare enrollment
- Enrolled (PECOS I20100607000084); accepts Medicare assignment
- Medical or professional school
- University Of Virginia School Of Medicine, 1997
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at 788 N Jefferson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kathleen Baugrud, M.D.Internal Medicine Physician1184678914
- John Betz, M.D.Internal Medicine Physician1659399194
- Kevin Dinapoli, M.D.Internal Medicine Physician1942254420
- Vincents Dindzans, M.D.Gastroenterology Physician1437106606
- Patricia Dolhun, M.D.Gynecology Physician1457305005
- Elaine Drobny, M.D.Endocrinology, Diabetes & Metabolism Physician1265488365
Verify Unchu Ko in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 42064Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% more Medicare Part D claims than the average internal medicine physician in 2024
5,260 Medicare Part D claims for 402 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 17 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium510 claims
- Levothyroxine Sodium375 claims
- Losartan Potassium319 claims
- Atorvastatin Calcium257 claims
- Amlodipine Besylate208 claims
- Hydrochlorothiazide155 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): 81.5 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).
Bills Medicare through one group practice
- Madison Medical Affiliates IncMilwaukee, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Unchu Ko among 2,078 internal medicine physician records in Wisconsin
Unchu Ko, M.D. is one of 2,078 internal medicine physician records with a practice address in Wisconsin. 70% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 46% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1997 · median 2002 among the 1,098 with a school on file
- Record last updated2016 · 55% 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 Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
382 internal medicine physician records list a practice address in Milwaukee
They are 382 of the 18,389 NPPES records with a practice address in Milwaukee, and 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in Milwaukee → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Kathleen Baugrud, M.D.Milwaukee, WI 532021184678914
- John Betz, M.D.Milwaukee, WI 532021659399194
- Matthew Connolly, M.D.Milwaukee, WI 532021407801996
- Kevin Dinapoli, M.D.Milwaukee, WI 532021942254420
- Wayne Heidenreich, M.D.Milwaukee, WI 532021326308511
- Khalil Odeh, M.D.Milwaukee, WI 532021952832131
- Aleksandar Rosich, MDMilwaukee, WI 532021972606028
- Abraham Varghese, M.D.Milwaukee, WI 532021134234776
Common questions
What is Unchu Ko, M.D.'s NPI number?
Unchu Ko, M.D.'s National Provider Identifier (NPI) is 1063466886, issued on May 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Unchu Ko, M.D. located?
The NPPES record lists a practice address at 788 N Jefferson St, Milwaukee, WI, 53202. Phone: (414) 272-8950. Providers update this record themselves, so call before visiting.
How can I verify Unchu Ko, M.D.'s license?
NPPES lists Wisconsin license number 42064, 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 Unchu Ko, M.D. prescribe under Medicare Part D?
In 2024, Unchu Ko, M.D. had 5,260 Medicare Part D claims for 402 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Unchu Ko, M.D.'s MIPS final score?
The 2023 MIPS final score is 81.5 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.