We're Greenleaf Orthopaedics & Physical Therapy

Continuing the proud tradition of over 50 years of quality orthopaedic service as Lake County's most established orthopaedic practice.

We have an important and bittersweet announcement. Due to the changing healthcare landscape in our community, Greenleaf Orthopaedics will be undergoing some major changes. Starting June 30th, Dr. Mayer will be leaving the practice and moving to a new opportunity. We will have more details on that shortly. Dr. Collins will be taking a sabbatical for 4-6 months as he considers retirement vs relocation. Dr. Smyth will be exploring new options. We'll have more info on that soon, as well.

Dr. Baier will continue seeing patients at our Gurnee office through September. After that, he is excited to join a new team where he will continue to make a difference helping patients. Our four doctors have the greatest respect and admiration for each other and this community. We all look forward to a contributing in new ways in the months and years ahead. If you have any questions, please call our office and we'll be happy to help. Thank you again for trusting us with your care for so many wonderful years at Greenleaf.


Orthopedics is the medical and surgical specialty dedicated to the prevention, diagnosis and treatment of diseases and injuries that affect the musculoskeletal system. The orthopedic specialists of Greenleaf believe in treating our patients as we would treat our own family members – providing personal, high-quality care designed to effectively and safely restore full health and function. We hope that patients will find our offices to be a warm, friendly environment where they will feel comfortable and confident in seeking our services.
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Physical Therapy

A key component in recovering from many orthopaedic injuries is physical therapy. Greenleaf offers individualized physical therapy services at all three of our office location with flexible hours and on-site Greenleaf orthopedic doctors designed to accommodate the patient’s busy schedule. Our physical therapy facilities are clean and bright with state-of-the-art equipment and cheerful, professional staff. Through proven therapy methods, new innovation in therapy procedures and regular communication with our on-site Greenleaf physicians, physical therapy plays a key role in restoring our patients to optimal health.
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Industrial Rehab

Workers injured on-the-job can find thorough, effective evaluation and rehabilitative therapy with Greenleaf’s industrial rehabilitation program. Functional capacity evaluations are also performed to evaluate a worker’s ability to return to the duties he was performing before the injury. Nurse case managers will find our offices accommodating and prompt as they work to provide the vital link between patient, physician and employer.
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Locations & Office Hours

Patient Portal


  • Gurnee, IL 847-623-3090
  • Libertyville, IL 847-680-4765

Physical Therapy

  • Gurnee, IL 847-263-8880
  • Libertyville, IL 847-367-9924

Office Hours

  • Monday - Friday 8am to 5pm


Gurnee Office:

105 N. Greenleaf Street
Gurnee, IL 60031

Libertyville Office:

151 W. Golf Road
Libertyville, IL 60048


  • I've only had one appointment with Dr. Smyth - thus far - but I really liked his approach. I thought his examination was very thorough. He was willing to take the time to explain to me all of the aspects of my injury and treatment - both long and short term - including the dangers of rushing to surgery and why it would be a good idea to take a conservative approach; specific to my injury. Additionally, he was happy to answer all of my questions and take my thoughts into consideration of my treatment.
    Finally, the office staff - from the receptionist, to the nurses, to the x-ray technician - was extremely friendly, welcoming and attentive. I wasn't waiting for very long during any parts of my appointment. They all seemed very respectful of my time. I've been to other Dr. offices; where it seems like the only respect should be paid to the Dr. - himself or herself. This was definitely not the case.

    I look forward to working with Dr. Smyth and his staff through the duration of my medical condition and would highly recommend to friends and relatives.
    J. Clark
  • Dr Mayer is the best surgeon I have ever had! If I ever need another surgery I hope it is one that he does.
    Wanda Solheim
  • I recently chose Dr. Baier to do my total hip replacement. He had been honing his skills with a relatively new anterior approach. He is polite, concise, and is clearly an expert in his field. He has a fantastic staff, who really take the level of patient understanding to a higher level. Dr. Baier and his team insured that I was ready for the procedure, and, more importantly, for the recovery. I was literally dancing a week after surgery, and continue to strengthen through PT at Greenleaf.
    C. Dohrn
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