Ryan Bernard Mitacek, MD
Pediatric Rheumatology Physician · Chicago, IL
Ryan Bernard Mitacek, MD is a pediatric rheumatology physician with a practice address in Chicago, Illinois, and NPI 1639674211, issued on Mar 27, 2018. Check the license (Illinois 036.155959, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Ryan Bernard Mitacek
- Credential
- MD
- Primary taxonomy
- Pediatric Rheumatology Physician 2080P0216X
- License numbers
- 036.155959 IL
4301511663 MI
Self-reported in NPPES; status is on the state search - Practice location
- 5841 S Maryland Ave # MC5044, Chicago, IL 60637
- Phone
- (773) 702-1000
- Enumerated
- Mar 27, 2018
- Record last updated
- Apr 12, 2024
- Medicare enrollment
- Enrolled (PECOS I20240806000202); accepts Medicare assignment
- Entity
- Type 1 · individual
Verify Ryan Bernard Mitacek 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 036.155959Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- University PediatriciansDetroit, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Pediatric Rheumatology Physician providers in Illinois
There are 14 pediatric rheumatology physician records in Illinois.
Other pediatric rheumatology physician records in Illinois
- Angela ChunChicago, IL1609317056
- Deirdre De Ranieri, MDChicago, IL1417104274
- Cuoghi Edens, MDChicago, IL1114247087
- Apoorva Iyengar, MDChicago, IL1841932795
- Marisa Klein-Gitelman, MD MPHChicago, IL1336104348
- Michael Miller, MDChicago, IL1578576724
- Taha Moussa, MDChicago, IL1124549993
- Brian Nolan, MDChicago, IL1912342452
- Pooja Patel, D.O.Chicago, IL1477966323
- Rotem Semo Oz, MDChicago, IL1780194423
Common questions
What is Ryan Bernard Mitacek, MD's NPI number?
Ryan Bernard Mitacek, MD's National Provider Identifier (NPI) is 1639674211, issued on Mar 27, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Ryan Bernard Mitacek, MD located?
The NPPES record lists a practice address at 5841 S Maryland Ave # MC5044, Chicago, IL, 60637. Phone: (773) 702-1000. Providers update this record themselves, so call before visiting.
How can I verify Ryan Bernard Mitacek, MD's license?
NPPES lists Illinois license number 036.155959, 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.
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.