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

Dr. Patrick Onkka, MD

Individual provider Internal Medicine Physician · NPI 1407235518

Dr. Patrick Onkka, MD practises Rheumatology in Lake Forest, Illinois. Graduated from Indiana University School of Medicine in 2015, 11 years ago. Practices with Northwestern Medical Faculty Foundation, a 4,394-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
11
Trained at
Indiana University School of Medicine
Licensed in
IL
In the registry since
2015
Specialties on file
2
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

800 N Westmoreland Rd Ste 201
Lake Forest, IL 60045-1687
Phone: (847) 535-7647
Fax: (224) 271-3310
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 5841 S Maryland Ave Ste 930, Chicago, IL 60637 — (773) 702-6119

Specialties & licences

Rheumatology Physician (primary) Taxonomy 207RR0500X · Licence 036-145886 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 125066334 (IL)

Record details

NPI number1407235518
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 21, 2015
Last updated in NPPESSeptember 24, 2020
Certification dateSeptember 24, 2020

Medicare enrollment

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

Medicare specialtyRHEUMATOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolINDIANA UNIVERSITY SCHOOL OF MEDICINE
Graduated 2015 (11 years in practice)
Group practice Northwestern Medical Faculty Foundation — 4394 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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 patients691
Average patient age75

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. Those with a page here are linked.

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 Lake Forest