Joshua B. Dein, MD
Internal Medicine Physician · Chicago, IL
Joshua B. Dein, MD is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1396484382, issued on May 31, 2022. Check the license (Illinois 125.079675, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Joshua B. Dein
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 125.079675 IL
036174372 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1620 W Harrison St, Chicago, IL 60612
- Phone
- (312) 942-5000
- Enumerated
- May 31, 2022
- Record last updated
- Apr 16, 2025
- Medicare enrollment
- Enrolled (PECOS I20250501001828); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 2022
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 1620 W Harrison St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joshua B. Dein 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 125.079675Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average internal medicine physician in 2024
178 Medicare Part D claims for 55 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Furosemide12 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 one group practice
- Northwestern Medical Faculty FoundationChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joshua B. Dein among 7,238 internal medicine physician records in Illinois
Joshua B. Dein, 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 2022, is newer than 78% of them.
- NPI issued2022 · 78% of these records are older, 18% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2022 · 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).
2,867 internal medicine physician records list a practice address in Chicago
They are 2,867 of the 63,379 NPPES records with a practice address in Chicago, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Chicago → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Keith Boyd, M.D.Chicago, IL 606121174591978
- Lewis Coulson, M.D.Chicago, IL 606121619944931
- Henry Danko, M.D.Chicago, IL 606121780659524
- Denis Evans, M.D.Chicago, IL 606121952385841
- Tabassum Faruqi, M.D.Chicago, IL 606121013968536
- David Goldberg, MDChicago, IL 606121275588444
- Ionut Ilie, M.D.Chicago, IL 606121619926383
- Padma Kudaravalli, M.D.Chicago, IL 606121427004514
Common questions
What is Joshua B. Dein, MD's NPI number?
Joshua B. Dein, MD's National Provider Identifier (NPI) is 1396484382, issued on May 31, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Joshua B. Dein, MD located?
The NPPES record lists a practice address at 1620 W Harrison St, Chicago, IL, 60612. Phone: (312) 942-5000. Providers update this record themselves, so call before visiting.
How can I verify Joshua B. Dein, MD's license?
NPPES lists Illinois license number 125.079675, 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 Joshua B. Dein, MD prescribe under Medicare Part D?
In 2024, Joshua B. Dein, MD had 178 Medicare Part D claims for 55 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.