Chicago’s Most Advanced Regenerative Orthopedic Medicine and Rheumatology Treatments.

Next-generation regenerative orthopedic procedures and inflammatory arthritis treatments are available today. If you are in need of treatment for your pain, please contact us first to learn about our advanced non-surgical treatments.

Welcome to Chicago Arthritis and Regenerative Medicine. We’re at the forefront of advanced non-surgical solutions, providing personalized orthopedic care and rheumatology for active individuals from Chicago, Milwaukee, Madison, and beyond. We strive to deliver outcomes that reduce joint or spine pain and discomfort, restore functionality, and help guide our patients towards a swift return to their daily activities.

*DISCLAIMER: Like all medical procedures, Regenexx® Procedures have a success and failure rate. Patient reviews and testimonials on this site should not be interpreted as a statement on the effectiveness of our treatments for anyone else.


Dr. Siddharth Tambar – Specializing in Orthopedic Regenerative Medicine and Rheumatology.

  • Non-surgical treatments for chronic musculoskeletal problems, including tendinitis and arthritis.
  • Newer treatments for autoimmune diseases, including rheumatoid arthritis, psoriatic arthritis, and ankylosing spondylitis.
  • Musculoskeletal ultrasound for the diagnosis of various joint/tendon/nerve conditions, and for guided injections.
  • Regenerative orthopedics for chronic pain and acute injuries, including platelet-rich plasma / PRP, or bone marrow concentrate procedures (which includes stem cells and is often referred to as stem cell therapy).

Learn more about Dr. Siddharth Tambar

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Regenexx is a world leader in the field of orthopedic regenerative medicine based on scientific publications and is arguably the world’s most advanced platform for in-office interventional orthopedics.

Learn more about Regenexx Procedures


More than 157,200 highly specific image-guided Regenexx® Procedures have been performed since Regenexx pioneered the field of interventional orthopedics, using bone marrow concentrate to treat common orthopedic problems in 2005.


The published research on Regenexx procedures accounts for approximately 44% of the world’s research on the use of bone marrow concentrate for orthopedic conditions (cumulative n of patients published & treated with bone marrow concentrate as of 1/1/2019)

Rheumatology & Inflammatory Arthritis Treatment Center – Telemedicine Options and In-Office Visits for Patients in the Chicago, Madison, and Milwaukee areas.

As an outpatient clinic focused on autoimmune conditions, your specific needs are addressed as our priority.  We offer a cost-effective, convenient, and friendlier option for your treatment when compared to hospitals and other infusion clinics.

At Chicago Arthritis and Regenerative Medicine, we offer a range of treatment options for a variety of rheumatologic disorders including:

  • Rheumatoid Arthritis, Psoriasis, and Ankylosing Spondylitis
  • Osteoporosis
  • Systemic Lupus Erythematosus

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