Justin Brian Gan, M.D.
Rheumatology Physician · Skokie, IL
Justin Brian Gan, M.D. is a rheumatology physician with a practice address in Skokie, Illinois, and NPI 1851549067, issued on Aug 29, 2008. Check the license (Illinois 036125595, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Justin Brian Gan
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License numbers
- 036125595 IL
076047 IL
Self-reported in NPPES; status is on the state search - Practice location
- 9650 Gross Point RD Ste 3900, Skokie, IL 60076
- Phone
- (847) 570-2503
- Enumerated
- Aug 29, 2008
- Record last updated
- Jul 29, 2026
- Fax
- (847) 568-1696
- Medicare enrollment
- Enrolled (PECOS I20100827000884); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 2007
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 340 in Illinois → Look up another NPI →
Also registered at 9650 Gross Point RD Ste 3900
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Cynthia Brincat, M.D.Urogynecology and Reconstructive Pelvic Surgery (Urology) Physician1497871792
- Michelle Buscemi, APN-CNMAdvanced Practice Midwife1508398397
- Tanya Chirayil, FNP-BCNurse Practitioner1124443031
- Crystal Cooper, PA-CSurgical Physician Assistant1740610856
Verify Justin Brian Gan 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 036125595Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% more Medicare Part D claims than the average rheumatology physician in 2024
3,353 Medicare Part D claims for 474 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 220 claims were for opioids.
Most prescribed
- Prednisone462 claims
- Hydroxychloroquine Sulfate295 claims
- Methotrexate221 claims
- Alendronate Sodium162 claims
- Gabapentin161 claims
- Tizanidine Hcl150 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): 93.1 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
- Endeavor Health Medical GroupGlenview, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Justin Brian Gan among 340 rheumatology physician records in Illinois
Justin Brian Gan, M.D. is one of 340 rheumatology physician records with a practice address in Illinois. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 59% of them.
- NPI issued2008 · 59% of these records are older, 35% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2007 · median 2003 among the 244 with a school on file
- Record last updated2026 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Illinois
There are 340 rheumatology physician records in Illinois.
All 340 in Illinois → Every provider in Skokie → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Erin Arnold, MDSkokie, IL 600761093767733
- William Arnold, MDSkokie, IL 600761457305823
- John Berry, D.O.Skokie, IL 600761417319690
- Ximena Chavez, M.D.Skokie, IL 600761912196502
- Robert Hozman, M.D.Skokie, IL 600761659308237
- Allan Pilloff, M.D.Skokie, IL 600761245278142
- Sydney Brandwein, M.D.Park Ridge, IL 600681053357590
- Sana JafferyPark Ridge, IL 600681922569201
Common questions
What is Justin Brian Gan, M.D.'s NPI number?
Justin Brian Gan, M.D.'s National Provider Identifier (NPI) is 1851549067, issued on Aug 29, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Justin Brian Gan, M.D. located?
The NPPES record lists a practice address at 9650 Gross Point RD Ste 3900, Skokie, IL, 60076. Phone: (847) 570-2503. Providers update this record themselves, so call before visiting.
How can I verify Justin Brian Gan, M.D.'s license?
NPPES lists Illinois license number 036125595, 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 Justin Brian Gan, M.D. prescribe under Medicare Part D?
In 2024, Justin Brian Gan, M.D. had 3,353 Medicare Part D claims for 474 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Justin Brian Gan, M.D.'s MIPS final score?
The 2023 MIPS final score is 93.1 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.