Cholog Yeon, M.D.
Family Medicine Physician · Rockford, IL
Cholog Yeon, M.D. is a family medicine physician with a practice address in Rockford, Illinois, and NPI 1215509716, issued on Jul 14, 2021. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Cholog Yeon
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- D0101519 MD
0101283273 VA
Self-reported in NPPES; status is on the state search - Practice location
- 1221 E. State St, Rockford, IL 61104
- Phone
- (815) 972-1037
- Enumerated
- Jul 14, 2021
- Record last updated
- Jan 28, 2026
- Fax
- (815) 972-1092
- Medicare enrollment
- Enrolled (PECOS I20241104002430); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Verify Cholog Yeon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average family medicine physician in 2024
334 Medicare Part D claims for 50 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Lisinopril33 claims
- Albuterol Sulfate Hfa24 claims
- Simvastatin21 claims
- Atorvastatin Calcium17 claims
- Metformin Hcl17 claims
- Amlodipine Besylate16 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.
Bills Medicare through 2 group practices
- Kaiser Foundation Health Plan OF The Mid Atlantic States, IncWashington, DC
- Martha Jefferson Medical Group LLCCharlottesville, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Cholog Yeon among 6,215 family medicine physician records in Illinois
Cholog Yeon, M.D. is one of 6,215 family medicine physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 84% of them.
- NPI issued2021 · 84% of these records are older, 13% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2019 · median 2006 among the 3,714 with a school on file
- Record last updated2026 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
145 family medicine physician records list a practice address in Rockford
They are 145 of the 3,893 NPPES records with a practice address in Rockford, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Rockford → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Carlos Aguero-Medina, MDRockford, IL 611041053364349
- Gerald Boyd, M.D.Rockford, IL 611041235111774
- Tammy Homman, M.D.Rockford, IL 611041558337956
- Mary Jo Ironside, MDRockford, IL 611041275579658
- Mitchell King, MDRockford, IL 611041225038276
- Martin Lipsky, MDRockford, IL 611041801870845
- Lucio Martinez, MDRockford, IL 611041154397354
- Anna Meenan, M.D.Rockford, IL 611041518958578
Common questions
What is Cholog Yeon, M.D.'s NPI number?
Cholog Yeon, M.D.'s National Provider Identifier (NPI) is 1215509716, issued on Jul 14, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Cholog Yeon, M.D. located?
The NPPES record lists a practice address at 1221 E. State St, Rockford, IL, 61104. Phone: (815) 972-1037. Providers update this record themselves, so call before visiting.
How can I verify Cholog Yeon, M.D.'s license?
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 Cholog Yeon, M.D. prescribe under Medicare Part D?
In 2024, Cholog Yeon, M.D. had 334 Medicare Part D claims for 50 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.