Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Aaron Michael Farber, DO

Individual provider Emergency Medicine Physician · NPI 1871795443

Aaron Michael Farber, DO practises Emergency Medicine in McHenry, Illinois. Graduated from Midwestern University, Chicago College of Osteopathic Med in 2006, 20 years ago. Practices with Northwestern Medical Faculty Foundation, a 4,394-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
20
Trained at
Midwestern University, Chicago College of Osteopathic Med
Licensed in
IL
In the registry since
2007
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

4201 W Medical Center Dr
McHenry, IL 60050-8409
Phone: (815) 338-6600
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 2000 Ogden Ave, Aurora, IL 60504-7222 — (847) 697-8868

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 036121493 (IL)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 125051035 (IL)

Record details

NPI number1871795443
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 5, 2007
Last updated in NPPESJuly 21, 2022
Certification dateMay 3, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolMIDWESTERN UNIVERSITY, CHICAGO COLLEGE OF OSTEOPATHIC MED
Graduated 2006 (20 years in practice)
Group practice Northwestern Medical Faculty Foundation — 4394 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients499
Services billed 526 a service is one billed item, such as a visit, a test or a procedure
Average patient age78

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Northwestern Medicine McHenry Hospital · McHenry, IL

Colleagues at Northwestern Medical Faculty Foundation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 4394 clinicians in the practice; 12 are shown here.

Other providers in McHenry