John Pierre Case, M.D.
Rheumatology Physician · Chicago, IL
John Pierre Case, M.D. is a rheumatology physician with a practice address in Chicago, Illinois, and NPI 1104840123, issued on Jul 26, 2006. Check the license (Illinois 036-073570, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- John Pierre Case
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 036-073570 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1901 W Harrison St, Chicago, IL 60612
- Phone
- (312) 864-7268
- Enumerated
- Jul 26, 2006
- Record last updated
- Apr 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (312) 864-9494
- Medicare enrollment
- Enrolled (PECOS I20110223000243); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 1985
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 340 in Illinois → Look up another NPI →
Also registered at 1901 W Harrison St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Annette Abraham, MDInfectious Disease Physician1083195093
- Fidel Abrego, MDObstetrics & Gynecology Physician1245351824
- Bryan Acevedo, MDInternal Medicine Physician1598459612
Verify John Pierre Case 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 036-073570Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
42% fewer Medicare Part D claims than the average rheumatology physician in 2024
1,151 Medicare Part D claims for 158 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 126 claims were for opioids.
Most prescribed
- Prednisone124 claims
- Tramadol Hcl124 claims
- Humira Pen74 claims
- Leflunomide62 claims
- Hydroxychloroquine Sulfate58 claims
- Methotrexate48 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): 84.6 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
- Cook CountyChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Pierre Case among 340 rheumatology physician records in Illinois
John Pierre Case, 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 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 52% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1985 · median 2003 among the 244 with a school on file
- Record last updated2021 · 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 Chicago → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Shiva AramiChicago, IL 606121629173968
- Sanford Baim, M.D.Chicago, IL 606121841227311
- Joel Block, M.D.Chicago, IL 606121285659771
- Huan ChangChicago, IL 606121336244870
- Sarah Everakes, M.D.Chicago, IL 606121487687299
- Paul Glickman, M.D.Chicago, IL 606121801829510
- Meenakshi Jolly, M.D.Chicago, IL 606121316970015
- Lawrence Layfer, M.D.Chicago, IL 606121235162835
Common questions
What is John Pierre Case, M.D.'s NPI number?
John Pierre Case, M.D.'s National Provider Identifier (NPI) is 1104840123, issued on Jul 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Pierre Case, M.D. located?
The NPPES record lists a practice address at 1901 W Harrison St, Chicago, IL, 60612. Phone: (312) 864-7268. Providers update this record themselves, so call before visiting.
How can I verify John Pierre Case, M.D.'s license?
NPPES lists Illinois license number 036-073570, 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 John Pierre Case, M.D. prescribe under Medicare Part D?
In 2024, John Pierre Case, M.D. had 1,151 Medicare Part D claims for 158 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is John Pierre Case, M.D.'s MIPS final score?
The 2023 MIPS final score is 84.6 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.