Gary Richard Fahrenbach, M.D.
Rheumatology Physician · Niles, IL
Gary Richard Fahrenbach, M.D. is a rheumatology physician with a practice address in Niles, Illinois, and NPI 1043303803, issued on Oct 2, 2006. Check the license (Illinois 03657385, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Gary Richard Fahrenbach
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 03657385 IL
Self-reported in NPPES; status is on the state search - Practice location
- 7411 N Milwaukee Ave, Niles, IL 60714
- Phone
- (773) 763-1818
- Enumerated
- Oct 2, 2006
- Record last updated
- Aug 26, 2024
- Fax
- (773) 763-9381
- Medicare enrollment
- Enrolled (PECOS I20100130000354); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 1977
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 340 in Illinois → Look up another NPI →
Also registered at 7411 N Milwaukee Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Megan BonisGerontology Nurse Practitioner1922776186
- Elizabeth Fahrenbach, M.D.Dermatology Physician1609003557
- Katherine Janezic, NPDermatology Physician1114551983
- Joanna Jaros, MDDermatology Physician1447712492
- Caryn Olshansky, PA-CPhysician Assistant1033644992
Verify Gary Richard Fahrenbach 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 03657385Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% fewer Medicare Part D claims than the average rheumatology physician in 2024
1,598 Medicare Part D claims for 209 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 186 claims were for opioids.
Most prescribed
- Prednisone339 claims
- Methotrexate261 claims
- Leflunomide144 claims
- Tramadol Hcl105 claims
- Acetaminophen-Codeine69 claims
- Hydroxychloroquine Sulfate65 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.
Industry payments in 2024: $93.37
4 payments; by number, the most common kind was food and beverage; the largest payer was Regeneron Healthcare Solutions, Inc. The 4,486 providers of this specialty with any payment received $8,538.33 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Gary Richard Fahrenbach among 340 rheumatology physician records in Illinois
Gary Richard Fahrenbach, 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
- Graduated1977 · median 2003 among the 244 with a school on file
- Record last updated2024 · 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 Niles → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Elly Mak, M.D.Lincolnwood, IL 607121750461281
- Siddharth Tambar, MDChicago, IL 606611477655488
- Osman Bhatty, MDChicago, IL 606571124401500
- Yongsuk Lertratanakul, MDChicago, IL 606571215935663
- David Mael, M.D.Chicago, IL 606571134152739
- Abdul Mohammed, MBBS, MDChicago, IL 606571790102804
- Romesa SajjadChicago, IL 606571609371616
- Laarni Quimson, D.O.Chicago, IL 606431245671320
Common questions
What is Gary Richard Fahrenbach, M.D.'s NPI number?
Gary Richard Fahrenbach, M.D.'s National Provider Identifier (NPI) is 1043303803, issued on Oct 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gary Richard Fahrenbach, M.D. located?
The NPPES record lists a practice address at 7411 N Milwaukee Ave, Niles, IL, 60714. Phone: (773) 763-1818. Providers update this record themselves, so call before visiting.
How can I verify Gary Richard Fahrenbach, M.D.'s license?
NPPES lists Illinois license number 03657385, 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 Gary Richard Fahrenbach, M.D. prescribe under Medicare Part D?
In 2024, Gary Richard Fahrenbach, M.D. had 1,598 Medicare Part D claims for 209 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.