Clinicians affiliated with Northwestern Medicine Mchenry

Acute Care Hospitals · Voluntary non-profit - Other · 4201 Medical Center Drive, Mchenry, IL 60050 · Chicago-Naperville-Elgin, IL-IN · CCN 140116

Affiliation snapshotNovember 2, 2026CMS Doctors and Clinicians Facility Affiliation file, current snapshot (no end-of-2024 archive), applied to 2024

Activity year2024Medicare Part B claims, Original Medicare fee-for-service

1,453 clinicians affiliated with Northwestern Medicine Mchenry are in the 2024 Medicare Part B data (1,558 listed in the affiliation file).

Each clinician's exact figures are in their Physician Report, from their page. View sample report · Already purchased? Open your report (earlier Local report and passes)

Affiliated clinicians by specialty, 2024

All specialties · Nurse Practitioner (183) · Internal Medicine (156) · Family Practice (115) · Physician Assistant (114) · Diagnostic Radiology (78) · Anesthesiology (57) · Cardiology (48) · Hematology-Oncology (48) · Orthopedic Surgery (45) · Hospitalist (44) · Neurology (44) · Emergency Medicine (40) · Gastroenterology (40) · Pathology (38) · Urology (33) · Pulmonary Disease (26) · Interventional Cardiology (23) · Obstetrics & Gynecology (23) · Otolaryngology (21) · Podiatry (21) · Rheumatology (20) · Clinical Cardiac Electrophysiology (19) · General Surgery (19) · Neurosurgery (19) · Physical Medicine and Rehabilitation (18) · Endocrinology (14) · Certified Registered Nurse Anesthetist (CRNA) (13) · Nephrology (13) · Critical Care (Intensivists) (11) · Neuropsychiatry (9) · Interventional Radiology (8) · Medical Oncology (8) · Psychiatry (7) · Radiation Oncology (7) · Thoracic Surgery (7) · Vascular Surgery (7) · Infectious Disease (6) · Sports Medicine (6) · Interventional Pain Management (5) · Ophthalmology (5) · Surgical Oncology (5) · Hand Surgery (4) · Pain Management (4) · Plastic and Reconstructive Surgery (4) · Gynecological Oncology (3) · Hematology (3) · Advanced Heart Failure and Transplant Cardiology (2) · Certified Clinical Nurse Specialist (2) · Colorectal Surgery (Proctology) (2) · Allergy/ Immunology (1) · General Practice (1) · Osteopathic Manipulative Medicine (1) · Pediatric Medicine (1) · Psychologist, Clinical (1) · Sleep Medicine (1)

Anesthesiology affiliated with Northwestern Medicine Mchenry, 2024

Alphabetical by last name; 57.

Name	City
Adewale Adeyooye, MD	Chicago, IL
Fiaz Ahmed, MD	Arlington Heights, IL
Nnamdi Amilo	Huntley, IL
Janelle K Artz, M.D.	Arlington Heights, IL
Joanna C Barclay, MD	Elgin, IL
Brian M Cadre, M.D.	Arlington Heights, IL
Gintautas Ciabilis, MD	Joliet, IL
Joseph Colligan, MD	Lake Forest, IL
Paul C Connors, M.D.	Lake Forest, IL
Caleb A Demoss, DO	Maywood, IL
Ajay Dharmappa, M.D.	Huntley, IL
Jessica Drescher, DO	Lake Forest, IL
Marjean E Eastmond, M.D.	Chicago, IL
David M Enscoe, M.D.	Gainesville, FL
Farhan Farooqui, MD	Mchenry, IL
Marco A Fernandez, M.D.	Arlington Heights, IL
John J Freely, M.D.	Mchenry, IL
Jennifer Garcia Wojtczak, M.D.	Mchenry, IL
Olga Gorenyuk, M.D.	Huntley, IL
Ashish Gupta, MD	Chicago, IL
Todd S Hagle, M.D.	Saint Charles, IL
George Hefner, MD	Lake Forest, IL
Matthew D Henry, MD	Columbia, MO
Bradley J Hewlett, M.D.	Mchenry, IL
Jay Hurh, M.D.	Libertyville, IL
Todd J Korthals, M.D.	La Crosse, WI
Demetrios J Louis, M.D.	Arlington Heights, IL
Nicholas P Lyon	New York, NY
David Mann, M.D.	Elgin, IL
Istvan Miko, M.D.	Elgin, IL
Khaja A Nasaruddin, M.D.	Woodstock, IL
Lisa T Newsome, M.D.	Raleigh, NC
Ronald J Oconer, D.O.	Harvard, IL
J. N Onwuta, M.D.	Elgin, IL
Naveed R Papa, M.D.	Elgin, IL
Tomasz Przezdziak, MD	Arlington Heights, IL
Michael A Pugnale, MD	Kenosha, WI
Andre Quihuis, MD	New York, NY
Mallikarjun G Reddy, M.D.	Schaumburg, IL
Richard P Rousseau, MD	Elgin, IL
Sonya Rygielski, MD	Crystal Lake, IL
Roman A Saldan, M.D.	Mchenry, IL
Connor L Shannon, D.O.	Park Ridge, IL
Khalid Sharif-Sidi, M.D.	Iowa City, IA
Jordan Sharlin, M.D.	Winfield, IL
Santosh K Singh, D.O.	Arlington Heights, IL
Adam Soliman, DO	Rockford, IL
Kenneth W Song, MD	Englewood, CO
Alex A Stanziola, M.D.	Geneva, IL
Lawrence Steinberg, MD	Highland Park, IL
Longcheng Su, MD	Crystal Lake, IL
Adam Tiagonce, M.D.	Lake Forest, IL
Anthony Tran, DO	Bradenton, FL
Hoang Tran, M.D.	Laguna Hills, CA
Charles E Umunna, M.D.	Berwyn, IL
Phillip Williams, MD	Arlington Heights, IL
Michael C Woo, MD	Burr Ridge, IL

Affiliation comes from the CMS Doctors and Clinicians Facility Affiliation file, hospital rows only; name, address and type from the CMS Hospital General Information file. CMS does not publish an end-of-year archive of the affiliation file, so the current snapshot is applied to the latest data year. A clinician listed with several hospitals or groups appears on each of their pages. How hospital pages are built