Angelica Kathleen Gierut, M.D.
Rheumatology Physician · Warrenville, IL
Angelica Kathleen Gierut, M.D. is a rheumatology physician with a practice address in Warrenville, Illinois, and NPI 1518115252, issued on Sep 6, 2008. Check the license (Illinois 036.120917, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Angelica Kathleen Gierut
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 036.120917 IL
Self-reported in NPPES; status is on the state search - Practice location
- 27650 Ferry RD Ste 210, Warrenville, IL 60555
- Phone
- (630) 933-7400
- Enumerated
- Sep 6, 2008
- Record last updated
- Apr 25, 2022
- Fax
- (630) 315-8979
- Medicare enrollment
- Enrolled (PECOS I20110616000128); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 2005
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 340 in Illinois → Look up another NPI →
Also registered at 27650 Ferry RD Ste 210
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Abrahim Syed, M.D.Rheumatology Physician1932546249
Verify Angelica Kathleen Gierut 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 036.120917Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% more Medicare Part D claims than the average rheumatology physician in 2024
2,702 Medicare Part D claims for 441 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 116 claims were for opioids.
Most prescribed
- Hydroxychloroquine Sulfate493 claims
- Methotrexate355 claims
- Prednisone232 claims
- Leflunomide159 claims
- Methylprednisolone145 claims
- Gabapentin79 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
- Central Dupage Physician GroupWinfield, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Angelica Kathleen Gierut among 340 rheumatology physician records in Illinois
Angelica Kathleen Gierut, 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
- Graduated2005 · median 2003 among the 244 with a school on file
- Record last updated2022 · 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 Warrenville → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Abrahim Syed, M.D.Warrenville, IL 605551932546249
- Corinna Weckerle, M.D.Warrenville, IL 605551083771711
- Carmelita Colbert, MDWestmont, IL 605591720206790
- Lee Graham, M.D.Westmont, IL 605591619932027
- Albert Iammartino, M.D.Westmont, IL 605591699730184
- Darcy Majka, MDWestmont, IL 605591831206580
- Mahum Mirza, DOWestmont, IL 605591992333686
- Nicole Richman, M.D.Westmont, IL 605591841451747
Common questions
What is Angelica Kathleen Gierut, M.D.'s NPI number?
Angelica Kathleen Gierut, M.D.'s National Provider Identifier (NPI) is 1518115252, issued on Sep 6, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Angelica Kathleen Gierut, M.D. located?
The NPPES record lists a practice address at 27650 Ferry RD Ste 210, Warrenville, IL, 60555. Phone: (630) 933-7400. Providers update this record themselves, so call before visiting.
How can I verify Angelica Kathleen Gierut, M.D.'s license?
NPPES lists Illinois license number 036.120917, 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 Angelica Kathleen Gierut, M.D. prescribe under Medicare Part D?
In 2024, Angelica Kathleen Gierut, M.D. had 2,702 Medicare Part D claims for 441 beneficiaries; the average among rheumatology physician prescribers was 1,978. 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.