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Medical Network

Rockford IceHogs Medical Network


The Rockford IceHogs Medical Network features two distinct divisions of physician care and medical support as part of the Chicago Blackhawks organization. The primary medical network and the secondary sub-specialty network provide the matrix of medical care necessary to uphold those standards set forth by the National Hockey League (NHL) and respectively, the American Hockey League (AHL).

The IceHogs primary medical network consists of eight of Rockford’s most elite physicians as well as the county's finest emergency medical service company. They work hand-in-hand with Athletic Trainer DJ Jones on a day-to-day basis, and as well, directly with the athletes and hockey operations staff. This team of physicians are at rink-side for all pre-season and regular season / playoff home games and as well, within their respective companies of origin. The primary medical network is directed by Dr. Geoff Van Thiel, Chief Medical Advisor and Team Orthopedic out of OrthoIllinois. 

The IceHogs Secondary Medical Network is comprised of nearly 50 local medical providers ranging from such specialties as audiology to ophthalmology. This group of specialized physicians and facilities allow the both the Athletic Trainer, and the Primary Medical Network physicians to utilize the most effective and detailed care available. The secondary medical network is an additional safety net for the athletes and hockey operations staff and is utilized in an intricate system of communication and procedural efficiency to keep in line with the demanding hockey schedule. 

The Rockford IceHogs Medical Network is unquestionably the most detailed and efficiently operated system in the AHL, and without reservation, rivals many NHL systems as well. It is the efforts of those physicians and medical facilities that keep the IceHogs on the ice, healthy, and safe.  

Rockford IceHogs Primary Medical Network


Dr. Geoff Van Thiel, MD
Chief Medical Advisor/
Team Orthopedic


 Geoff Van Thiel, MD - Orthopedic Surgeon

Dr. Geoffrey Van Thiel is a sports medicine orthopedic surgeon with OrthoIllinois and is the head of the Rockford IceHogs Medical network.. He graduated with Distinction from the University of Wisconsin – Madison and then attended UCLA Medical School in pursuit of his medical degree. Following medical school, Dr. Van Thiel completed his residency at Rush Medical Center in Chicago under the guidance of some of the country’s leading sports medicine surgeons. After residency, he was accepted into one of the top sports medicine fellowships at Rush University Medical Center and currently remains on the faculty at Rush University Medical Center.

Over the years, he has received intense exposure to world-renowned surgeons in a multitude of areas including a comprehensive involvement with cartilage restoration and joint preserving surgical techniques of the knee, hip and shoulder; cutting edge procedures in shoulder arthroscopy and arthroplasty; in addition to gaining considerable expertise with hip arthroscopy. He has also had the opportunity to educate other surgeons in these specialty areas.

Dr. Van Thiel has authored over 50 textbook chapters and journal articles. His research has been included in over 60 international presentations with topics including: cartilage restoration, shoulder instability repair, rotator cuff repair, ACL repair, hip impingement treatment, complex knee ligament reconstruction, and shoulder arthroplasty. Dr. Van Thiel currently sits on the editorial board of two major orthopedic sports medicine journals.

Dr. Van Thiel’s commitment to professional sports is evident in his past involvement with the Chicago Bulls (NBA) and Chicago White Sox (MLB), and his current role with the Rockford IceHogs (AHL).

Click here to view Dr. Van Thiel's extensive profile.


Jon Whitehurst, MD
Dr. Jon Whitehurst, MD
Team Orthopedic

Jon Whitehurst, MD - Orthopedic Surgeon

Dr. Jon Whitehurst received his medical degree from the University of Chicago Pritzker School of Medicine.  The Evanston, Ill. native is an Orthopedic Surgeon at OrthoIllinois, Ltd. and his practice focuses on general orthopedics with a special interest in arthroscopic surgery and sports medicine.

He is a member of the American Board of Orthopedic Surgery and the American Orthopedic Society for Sports Medicine.  

Dr. Whitehurst has published research in the Journal of Arthroscopic and Related Surgery, Journal of Shoulder and Elbow Surgery, Journal of Arthroscopy, Foot and Ankle International.

Outside of the medical field, Dr. Whitehurst enjoys spending time his family, biking, golfing, hiking and boating.

Click here to view Dr. Whitehurst's extensive profile.


Scott Trenhaile, MD

Dr. Scott Trenhaile, MD
Team Orthopedic


Scott Trenhaile, MD - Orthopedic Surgeon

Dr. Scott Tenhaile earned his Medical Degree from the University of Iowa College of Medicine. He completed his Orthopedic Surgery Residency at St. Luke’s-Roosevelt Hospital/Columbia University College of Physicians and Surgeons. Following his residency, the Iowa native continued his experience with an Arthroscopic Surgery and Sports Medicine Fellowship at Mississippi Sports Medicine and Orthopedic Center.

He has been at Rockford Orthopedic Associates, Ltd. since 2004 and is also a Clinical Assistant Instructor of Surgery at University of Illinois College of Medicine, Rockford. He is also part of the Rush University Medical Center Residency Program and is an Adjunct Clinical Instructor at Midwestern University.

Dr. Trenhaile's focus is on arthroscopic surgery of the shoulder, elbow, knee and the treatment of sports or activity-related injuries.

Aside from his medical intrests, he enjoys playing hockey, golfing, skeet shooting and spending time with family. 

Click Here to view Dr. Trenhaile's extensive profile.


Dr. Dennis Norem
Team Internist


Dennis Norem, MD - Internal Medicine

Dr. Dennis Norem completed his residency for Internal Medicine at Illinois Masonic Hospital after earning his medical degree at the Universtiy of Illinois College of Medicine in Rockford in 1979. He attended the University of Illinois where he received his BA in Chemistry. He was Board Certified in Internal Medicine in 1982 and is a CWSP (Certified Wound Specialist Physician).

Dr. Norem is a Physician at Rockford Clinic, part of the Mercy Health/Rockford Health System. He is also an Assistant Clinical Professor of Medicine at University of Illinois College of Medicine - Rockford. He specializes in General Medicine and Wound Care. He was awarded the University of Illinois Distinguised Alumni Award and Winnebago County Medical Society Physician Leadership Award.

The Rockford native is part of the Winnebago County Medical Society and serves on the Board of Trustees for the Illinois State Medical Society. He is also involved with the American Medical Association and Assoication for Advancement of Wound Care, and was a past chairman of the Rockford Regional Health Council.

Dr. Norem enjoys water skiiing, wake surfing, and snow skiing. He likes to spend time with his family, including five children (three girls and two boys) and seven grandchildren.

Click Here to view Dr. Norem's extensive profile.


Dr. Brian Michalsen

Team Internist
Primary Care/

Sports Medicine


Brian Michalsen, D.O. - Internal/Sports Medicine

Dr. Brian Michalsen completed his undergraduate work at the University of Miami where he earned a B.S. in Biology in 2002. He became a Doctor of Osteopathy through the Chicago College of Osteopathic Medicine Midwestern University in 2008, completed his Residency at Advocate Lutheran General Family Medicine in 2011, and served his Fellowship at Resurrection Sports Medicine from 2011-12.

He started his career with Mercyhealth in 2012 and currently works with Family and Sports Medicine. Along with coverage of the Rockford IceHogs, Dr. Michalsen has helped cover numerous sports and sporting events, including the Rockford Marathon, Chicago Marathon, multiple wrestling tournaments and high school football.

Dr. Michalsen was born and raised in Rockford, Ill. and enjoys spending time with his son, playing basketball and wathcing sports and movies.

Click Here to view Dr. Michalsen's extensive profile.


Dr. Jason Bradenkamp
Emergency Medicine Coordinator


Jason Bredenkamp, MD, F.A.C.E.P. - Emergency Physician

Dr. Jason Bredencamp completed his Residency in Emergency Medicine at Resurrection Emergency Medical Center in Chicago in 2000. He attended medical school at Southern Illinois University after graduating from Indiana University and University of Illinois with a B.S. in Biology in 1993.

He began, and is currently, working as an Emergency Physician at Rockford Memorial Hospital in 2001 and is currnetly the Chariman of the Department of Emergency Medicine and the Medical Staff President. He has previously served as the Associate Director of the Department of Emergency Medicine as well. Dr. Bredenkamp is an American College of Emergency Medicine Fellow.

Originally hailing from Effingham, Ill., he enjoys spending time with family and friends, playing golf, hunting, and collecting wine. Dr. Bredenkamp acheived the rank of Eagle Scout in the Boy Scouts of America and married his wife, Kristin, in 2005. They have three children, Bryn, Collin, and Johnny.

Click Here to view Dr. Bredenkamp's extensive profile.





Game Coverage Emergency Medicine Physicians


Dr. Troy Shaffer

Dr. Mike McCarthy Dr. Hadyn Hollister      


Dr. David Dimke, DMD
Team Dentist


David Dimke, DMD

Dr. David Dimke graduated as an Economics major from Knox College and then went on to earn his DMD in General Dentistry from Southern Illinois School of Dental Medicine.

He has been a practicing dentist at Riverside Dental since 2005. His practice ranges from general dental care (crowns, tooth colored fillings, root canals) for children and adults to sedation dentistry for implant placement and wisdom tooth removal.

Outside of the office, Dr. Dimke's hobbies include golfing, weightlifting and spending time with his family, including three standard poodles - one of which is a therapy dog at Riverside Dental. He has been involved with Icehogs since the team's UHL days in the 2004-05 season, and enjoys the sport and the organization.

Dr. Dimkie was born and raised in Rockford and currently lives in Roscoe.

Click Here to view Dr. Dimke's extensive profile.


Dr. Joshua Hermanson, DMD
Team Dentist

Joshua Hermanson, DMD

Dr. Joshua Hermanson graduated Cum Laude from Southern Illinois University School of Dental Medicine after earning a B.A. in Health Sciences from the University of Iowa.

He has been a dentist at Riverside Dental since July of 2016 and performs a variety of dental procedures including fixed and removable prosthodontics, operative dentistry and endodontic therapy. He is a member of the American Dental Association, Illinois State Dental Society, and Chicago Dental Society.

Dr. Hermanson enjoys golfing, attending hockey games, traveling and spending time with family and friends. He was born and raised in Rockford, Ill. and currently lives in Caledonia. His father owns a painting business, mother works at OSF St. Anthony Medical Center, and younger sister attends Rock Valley College.

Click Here to view Dr. Hermanson's extensive profile.


Dr. Brant D Hulsebus,

Team Chiropractor

Brant D. Hulsebus, DC LCP CCWP

Dr. Brant Hulsebus began his eduction at Umass-Amherst and NIU where he earned his BS-PreMed before moving on to Palmer College of Chiropractic DC. He earned his post graduate certification in LCP Chiropractic Philosophy and CCWP certified Chiropractic wellness lifestyle.

Dr. Hulsebus is the head of Hulsebus Rockford Chiropractic Clinic, specializing in wellness. He serves as team chiropractor for the Rockford Foresters and also volunteers at East High School as well.

The Rockford, Ill. native is the Vice President of the Illinois Prairie State Chiropractic Association. He also serves as Legislative chairman and Medicare director. Additionally,  Dr. Hulsebus is on the Board of directors of the ICA (International 
Chiropractic Association) Wellness council.  He is a Locally Strategy Team member and founding member of Next Rockford.
Brant enjoys playing hockey, where he serves as team captain of a park district team.  He also likes watching the Bears, Blackhawks, Bulls and White Sox.  

He is a Rockford boomeranger. Brant has lived in Evanston, Western Massachusetts, DeKalb and Quad cities as well. 

Click Here to view Dr. Hulsebus' extensive profile.


Dr. Nate Hays, DC
Team Chiropractor


Nate Hayes, DC

Dr. Nate Hayes started his education at Rock Valley College before earning his Doctor of Chiropractic Degree, graduating Summa Cum Laude, from Palmer College of Chiropractic in 2011.

He is currently practicing at Hulsebus Rockford Chiropractic, starting in early 2014. Upon graduation from Palmer College of Chiropractic, he practiced for three years in Chicago, Ill, with an emphasis in training of corrective chiropractic care working to reduce the effects of scoliosis. Dr. Hayes is a Certified Chiropractic Wellness Practitioner emphasizing education of patients on how to keep their bodies well through evidence based protocols. Practice ranges from infant care, to adolescents in school, to occupational athletes, to geriatric patients. Along with his work with the IceHogs, he is also Team Chiropractor for the Rockford Aviators professional baseball team.

His hobbies include golfing, boating, and spending time with his family. He is an avid sports fan of the Chicago Blackhawks, Chicago Bulls, Chicago Cubs and Chicago Bears. Dr. Hayes enjoys spending time attending many varieties of live sporting events whenever possible.

Dr. Hayes was born and raised in Rockton, Ill., and returned to the Rockford area in 2014 after the birth of his son, Hunter. He currently resides in Roscoe, Ill. and married his wife, Lindsay, in 2010 in the Dominican Republic.

Click Here to view Dr. Hayes' extensive profile.


Dr. Josh Berven, DC
Team Chiropractor


Josh Berven, DC

Dr. Berven is a graduate of Simpson College: BA (athletic training) in 2007 and Palmer College of Chiropractic: DC in 2018.

His impressive career includes serving as the Athletic Trainer at East high school (Des Moines, IA), Des Moines Buccaneers hockey team (USHL), Lawton-Bronson high school (Sioux City, IA), Holly high school (Holly, MI), Palmer College Rugby (Davenport, IA) and the Strength Coach and personal trainer at Ankeny, Lawton-Bronson high school, Great Lakes Athletic Club (Lake Orion, MI), Palmer College Rugby, Titleist Performance Institute,  Functional Movement Systems and Russian Kettlebell Certified.

A native of Graettinger, Iowa, his hobbies include golf, home improvements, lifting and/or throwing very heavy things, visiting family in the Stateline and back in Iowa and visiting Key West, FL.

He currently lives in Rockford with his wife, Katie.

Click Here to view Dr. Berven's extensive profile.


Jeff Stringer, NR-EMT-P
Dr. Jeff Stringer,

Paramedic/Director of
EMS Services

Jeff Stringer, NR-EMT-P

A 1981 graduate of Harlem High School, Jeff entered into the EMT-Basic program though Rock Valley College graduating in fall 1981. Jeff remained a basic EMT until graduating from OSF St. Anthony Paramedic program in 1984. He obtained Critical Care Paramedic certification in 2007. Jeff also helps teach EMT’s & Paramedic for Rockford Health System as an instructor in classes such as Advanced Cardiac Life Support, Pediatric Advanced Life Support, International Trauma Life Support, CPR, and Firefighting classes.    

Jeff started his EMS career as an EMT with Swenson Ambulance in 1980. He was hired at Metro in 1985. Worked as Flight Paramedic with OSF Lifeline Helicopter from 86’-92’.  From 94’-99’ he worked as a 911 dispatcher with the Rockford Fire Department all the while still working part time for Metro. In 1999 came back to Metro full time as their Operations Manager. Since 1981, have been a volunteer firefighter with several area fire departments such as North Park, Harlem-Roscoe, Rockton, and currently is a Captain with the Loves Park Fire Department. During the summer months Jeff also works as a NASCAR official and Safety Crew member at the Rockford Speedway.

Dr. Stringer is an adult advisor for the Blackhawk Area Boy Scouts/Sea Scouts and has served on the committee for Operation Heartbeat, which helped increase public awareness of Automatic External Defibrillators. When not working, Jeff enjoys music, movies, scuba diving, amusement parks, camping, playing golf, and spending time with family and friends.

He was born and raised in the Rockford area and currently resides in Loves Park. Jeff is the oldest of 3 siblings. His parents Jerry and Karol still live in Machesney. His brother Brad and his wife Angie live in Rockton while his sister Tracy and her family live in Gardner, KS.

Click Here to view Dr. Stringer's extensive profile.


Rockford IceHogs Secondary Medical Network

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Orthopedic Subspecialties

Dr. Brian Foster - Hand, Wrist Elbow
Dr. Kenneth Korcek - Hand, Wrist, Elbow
Dr. Brian Bear - Upper Extremity
Dr. Edric Schwartz - Hand, Wrist, Elbow
Dr. Brian Braaksma - Spine Care
Dr. JJ Perez - Occupational Health Urgent Care
Dr. Robin Borchardt - Occupational Health
Dr. Marc Zussman - Orthopedic Trauma
Dr. Jeffrey Earhart - Orthopedic Trauma
Dr. Ryan Enke - PM & R/Spine Care
Dr. Scott Ferry - Pediatric Orthpedics
Dr. William Bush - Podiatry, Foot & Ankle Surgery
Dr. Richard Broderick - Neurosurgery/Spine Care
Dr. David Dansdill - Rheumatology
Megan Gearhart - Physical Therapist/Orthopedic Clinical Specialist
Jon Gallas - Physical, Therapist, FDN
Andy Sestak - Licensed Ortthotist
Rick Allen - Licensed Orthotist
Jeff Jones - Ancillary Services Director
Dr. Fred Sweet - Orthopedic Spine Surgeon
Dr. Christopher Silva - Orthopedic Spine Surgeon
Dr. Michael Roh - Orthopedic Spine Surgeon
Dr. Marie Walker - Physiatrist
Dr. Mary White - Podiatry
John McFarland - Licensed Pedorthist

Advanced Medicine 

Dr. Michael McCarthy - Trauma and General Surgery
Dr. Aaron Frye - Plastic and Reconstructive Surgery
Dr. Jeffrey Smith - Cardiology and Electrophysiology
Dr. Shawn Wallery - Neurology
Dr. Sharon Rhodes - Pediatric Medicine
Dr. Gregory Granzeier - Obstetrics and Gynecology
Dr. Moshin Kahn - Neurology/Sleep Medicine
Dr. Aliya Nasser - Endocrinology
Dr. Thomas McFarland - Hematology and Oncology
Dr. Zaheer Qaseem - Pulmonology
Dr. Marisha Cook - Allergy and Immunology
Dr. Machelle Dopkins - Audiology
Dr. John Ferguson - Otorhinolaryngology
Dr. Aaron Shiels - Gastroenterology
Dr. Douglas Roegner - Urology
Dr. Michael Kikta - Vascular Surgery
Dr. Kendall Boone - Vascular Surgery

Specialty Providers

Dr. Jamie King - Optometrist
Dr. Jennifer Dungan - Optometrist
Dr. Steven Yoon - Opthalmologist
Dr. John Choi - Oculoplastic Surgeon
Dr. Edward Rentschler - Oral and Maxillofacial Surgeon
Dr. Matthew Bruksch - Oral and Maxillofacial Surgeon
Dr. Melissa Stenstrom - Dermatologist
Lori Schultz - Nurse Practitioner 
Bryn Byers - Nurse Practitioner
Dr. Derek Cheng - Orthodontist
Dr. Landon Pryor - Cosmetic and Reconstructive Plastic Surgery
Dr. Elizabeth Pieroth - Neuropsychologist
Dr. Nicole Reams - Neurology

Wellnesss and Naturopathic Support

Alex Cotie - Team Nutritionist
Julie Burns - Team Nutritionist
Margaret Nicholson - Nutrition Skills Advisor
Mental Skills and Psychology
James F. Gary L.C.P.C. - Chicago Blackhawks and Rockford IceHogs
David Marks MS, L.C.P.C. - Team Mental Skills Coach
D. Steven Kiley, LCSW - Clinical Psychology
Keri Knutson - Team Yoga Instructor
Brian Allen - Team A.R.T. Specialist
Theresa Johnson - Team Acupuncturist
Pharmaceutical Support
Mark Cherney, R. PH. - Pharmacist
Diagnostics and Surgical Care
Rockford Radiology
Dr. John Lind - Radiologist
Dr. W. Stephen Minroe - Anesthesiologiset