Chicago Arthritis and Regenerative Medicine


618 W. Fulton St.
Chicago, IL 60661

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Adrien Lastet
3 months ago
Excellent treatment, bedside manner, analytics, everything about this was beyond my expectations. They explained in great detail what was happening with the…
Lin Dao
3 months ago
I went to see Dr. Tambar for for AS issues. He told me what my treatment options were and we discussed at…
Javier Leos
1 month ago
Definitely have an amazing staff here. Very thorough and very helpful. Felt terrible that I was a little late to my appointment…
Craig Mandernach
3 months ago
Dr. Tambar does daily what others say can’t be done at all. Take your MRI’s and x-rays for your visit. I found…
Allen Reed
3 months ago
Dr. Tambar was great. I was experiencing pain in my lower back and hamstring. I felt comfortable opting to have the stem…
Juan Romero
3 months ago
Dr. Tambar and his team never fail to dilver excellence service. I’ve had many procedures done with him due to many injuries.…
Kevin Menendez
3 months ago
Dr Tambar and all of his team members are very kind and helpful! I will highly recommend to anyone.…
Rachael Martinez
4 weeks ago
Chicago Arthtitis was a wonderful experience there extremely knowledgeable and professional, I’ve completed several treatments Platelet rich plasma injections and reduce my…
bruce baker
3 months ago
my experience at my appointment on 6 Nov 2020 was ok. thank you.…
Mary Uggen
3 months ago
The Regenexx bone marrow/stem cell procedures I have received at Chicago Arthritis have been spectacular- 100% successful. Dr.Tambar and his team are…


Siddharth Tambar, MD

Professional interests

  • Newer regenerative medicine treatments for chronic musculoskeletal problems, including the use of Platelet Rich Plasma and Stem cells for tendinitis and arthritis.
  • Newer treatments for autoimmune diseases, including for rheumatoid arthritis, psoriatic arthritis, and ankylosing spondylitis.
  • Musculoskeletal ultrasound for diagnosis of various joint/tendon/nerve conditions, and for guided injections.


  • 2008 Rheumatology Fellowship, Northwestern Memorial Hospital
  • 2004 Internship and Residency in Internal Medicine, Northwestern Memorial Hospital
  • 2001 Doctorate of Medicine, State University of New York at Syracuse
  • 1997 BA Economics, Summa Cum Laude, State University of New York at Buffalo


  • 2001 Alpha Omega Alpha, State University of New York at Syracuse
  • 1997 Summa Cum Laude, State University of New York at Buffalo
  • 1997 Phi Beta Kappa, State University of New York at Buffalo.
  • 1997 Dean’s Departmental Award, Economics Department, State University of New York at Buffalo.
  • 1993-1997 State University of New York at Buffalo Honors Program


  • Board Certified Rheumatology 2008
  • Board Certified Internal Medicine 2004
  • American Institute Ultrasound Medicine Certified in Musculoskeletal Ultrasound 2012
  • Musculoskeletal Ultrasound Certification in Rheumatology (RhMSUS) 2013

Professional Affiliations

  • Regenexx Network Physician
  • American College of Rheumatology- Musculoskeletal Ultrasound Education Planning Committee member
  • American Institute of Ultrasound Medicine
  • Internation Cellular Medicine Society
  • Illinois State Medical Society
  • Chicago Medical Society

Areas treated: Foot & Ankle, Hand & Wrist, Hip, Knee, Shoulder

No matter what my patients require to stop hurting, I’m here to either provide it for them myself or show them where to find a solution. Our capabilities are vast at Chicago Arthritis — we perform procedures ranging from injections to minimally invasive surgeries. We also focus on managing your condition rather than masking it. Many of my patients have been suffering for years, so finally giving them relief and allowing them to enjoy their favorite activities gives me great satisfaction.


Interventional Orthopedics Foundation, International Society for Neurofeedback and Research, World Academy of Pain Medicine Ultrasonography, American Society of Anesthesiologists, American Society of Regional Anesthesia and Pain Medicine, National Medical Association, Massachusetts Society of Anesthesiologists


Purdue Science Scholar, Senator Richard Lugar Scholar, Golden Key National Honor Society, Phi Beta Kappa Society, Cook County Physician Association Scholar, Northwest Indiana Physician Association Scholar

Areas treated: Cervical Spine, Hip, Knee, Lumbar Spine, Shoulder, Thoracic Spine

Areas Treated

Cervical Spine, Foot & Ankle, Hand & Wrist, Hip, Knee, Lumbar Spine, Shoulder, Thoracic Spine
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Providers listed on the Regenexx website are for informational purposes only and are not a recommendation from Regenexx for a specific provider or a guarantee of the outcome of any treatment you receive.