Chae Han - Chang, MD
Internal Medicine Physician · Gurnee, IL
Chae Han - Chang, MD is an internal medicine physician with a practice address in Gurnee, Illinois, and NPI 1588777122, issued on Aug 17, 2006. Check the license (Illinois 036096132, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Chae Han - Chang
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036096132 IL
Self-reported in NPPES; status is on the state search - Practice location
- 731 S Illinois Route 21, Gurnee, IL 60031
- Phone
- (847) 566-3337
- Enumerated
- Aug 17, 2006
- Record last updated
- Aug 7, 2025
- Fax
- (847) 816-3166
- Medicaid ID
- 036096132 IL
- Medicare enrollment
- Enrolled (PECOS I20040615000122); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 731 S Illinois Route 21
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Pamela Fennewald, MDGeriatric Medicine (Internal Medicine) Physician1912911991
- Gerald Gamalski, MDInternal Medicine Physician1679617716
Verify Chae Han - Chang 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 036096132Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,273 Medicare Part D claims for 207 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Atorvastatin Calcium107 claims
- Amlodipine Besylate99 claims
- Levothyroxine Sodium91 claims
- Losartan Potassium71 claims
- Lisinopril64 claims
- Rosuvastatin Calcium64 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 MIPS final score for 2023 (Medicare payment program): 94.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Northwestern Medical Faculty FoundationDeerfield, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Chae Han - Chang among 7,238 internal medicine physician records in Illinois
Chae Han - Chang, MD is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 61% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1995 · median 2003 among the 3,580 with a school on file
- Record last updated2025 · 47% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
28 internal medicine physician records list a practice address in Gurnee
They are 28 of the 846 NPPES records with a practice address in Gurnee, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Gurnee → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Vivek Arora, M.D.Gurnee, IL 600311194712638
- Melissa Chen, M.D.Gurnee, IL 600311942261516
- Regan Christopoulos, MDGurnee, IL 600311740231596
- Efren Estrella, M.D.Gurnee, IL 600311053341172
- Mohammad Kagzi, MDGurnee, IL 600311659347409
- Jason Kramer, M.D.Gurnee, IL 600311093746927
- James Monahan, MDGurnee, IL 600311760478499
- Joseph Mun, MDGurnee, IL 600311588635940
Common questions
What is Chae Han - Chang, MD's NPI number?
Chae Han - Chang, MD's National Provider Identifier (NPI) is 1588777122, issued on Aug 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Chae Han - Chang, MD located?
The NPPES record lists a practice address at 731 S Illinois Route 21, Gurnee, IL, 60031. Phone: (847) 566-3337. Providers update this record themselves, so call before visiting.
How can I verify Chae Han - Chang, MD's license?
NPPES lists Illinois license number 036096132, 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 Chae Han - Chang, MD prescribe under Medicare Part D?
In 2024, Chae Han - Chang, MD had 1,273 Medicare Part D claims for 207 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Chae Han - Chang, MD's MIPS final score?
The 2023 MIPS final score is 94.1 of 100. 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.