Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Darin O'Connor Harnisch, MD

Individual provider Specialist · NPI 1710910880

Dr. Darin O'Connor Harnisch, MD is an Infectious Disease in Niles, Illinois. Graduated from Loyola University of Chicago, Stritch School of Medicine in 1998, 28 years ago. Practices with Northwest Infectious Disease Consultants, SC, a 6-clinician group. Licensed in Illinois.

Years since qualifying
28
Trained at
Loyola University of Chicago, Stritch School of Medicine
Licensed in
IL
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

7900 N Milwaukee Ave Ste 231
Niles, IL 60714-3159
Phone: (847) 663-9400
Fax: (847) 663-9827
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Specialist (primary) Taxonomy 174400000X · Licence 036-106895 (IL)

Record details

NPI number1710910880
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 9, 2006
Last updated in NPPESDecember 20, 2021
Certification dateDecember 20, 2021

Medicare enrollment

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

Medicare specialtyINFECTIOUS DISEASE
Medical schoolLOYOLA UNIVERSITY OF CHICAGO, STRITCH SCHOOL OF MEDICINE
Graduated 1998 (28 years in practice)
Group practice Northwest Infectious Disease Consultants, S.C. — 6 clinicians
Accepts Medicare assignment Not indicated

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