Darcy Sittig Majka, MD
Rheumatology Physician · Westmont, IL
Darcy Sittig Majka, MD is a rheumatology physician with a practice address in Westmont, Illinois, and NPI 1831206580, issued on Aug 25, 2006. Check the license (Illinois 036109116, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Darcy Sittig Majka
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 036109116 IL
Self-reported in NPPES; status is on the state search - Practice location
- 801 N Cass Ave Ste 300, Westmont, IL 60559
- Phone
- (630) 268-0200
- Enumerated
- Aug 25, 2006
- Record last updated
- Jan 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (630) 963-6579
- Medicare enrollment
- Enrolled (PECOS I20031215000840); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 340 in Illinois → Look up another NPI →
Also registered at 801 N Cass Ave Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Craig Anderson, M.D.Family Medicine Physician1326025347
- Therese Bell, MSN, APRN, FNP-CNurse Practitioner1881239549
- Maria Douros, DOFamily Medicine Physician1700873106
- Gina Drugas, MDFamily Medicine Physician1760457253
- Brett Hampson, M.D.Family Medicine Physician1619922705
- Emily Heuermann, DPTPhysical Therapist1922669589
Verify Darcy Sittig Majka 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 036109116Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17% fewer Medicare Part D claims than the average rheumatology physician in 2024
1,647 Medicare Part D claims for 303 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D.
Most prescribed
- Hydroxychloroquine Sulfate496 claims
- Methotrexate351 claims
- Prednisone192 claims
- Sulfasalazine Dr105 claims
- Alendronate Sodium94 claims
- Allopurinol77 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
- Dupage Medical Group LtdWestmont, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Darcy Sittig Majka among 340 rheumatology physician records in Illinois
Darcy Sittig Majka, MD 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
- Graduated1997 · 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 Westmont → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Carmelita Colbert, MDWestmont, IL 605591720206790
- Lee Graham, M.D.Westmont, IL 605591619932027
- Albert Iammartino, M.D.Westmont, IL 605591699730184
- Mahum Mirza, DOWestmont, IL 605591992333686
- Nicole Richman, M.D.Westmont, IL 605591841451747
- Anna Stanislaus, M.D.Westmont, IL 605591699921353
- Angelica Gierut, M.D.Warrenville, IL 605551518115252
- Brinda Joshi, DONaperville, IL 605631134390750
Common questions
What is Darcy Sittig Majka, MD's NPI number?
Darcy Sittig Majka, MD's National Provider Identifier (NPI) is 1831206580, issued on Aug 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Darcy Sittig Majka, MD located?
The NPPES record lists a practice address at 801 N Cass Ave Ste 300, Westmont, IL, 60559. Phone: (630) 268-0200. Providers update this record themselves, so call before visiting.
How can I verify Darcy Sittig Majka, MD's license?
NPPES lists Illinois license number 036109116, 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 Darcy Sittig Majka, MD prescribe under Medicare Part D?
In 2024, Darcy Sittig Majka, MD had 1,647 Medicare Part D claims for 303 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.