Ari Chaim Greis DO
Pain Medicine
Instructor, Rehabilitation Medicine, Jefferson Medical College-Thos Jefferson Univ
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825 Old Lancaster Rd Ste 100Bryn Mawr, PA 19010
Phone+1 267-339-3558
Fax+1 267-339-3763
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Education & Training
University of WashingtonResidency, Physical Medicine and Rehabilitation, 2004 - 2007
Suburban Community HospitalInternship, Transitional Year, 2003 - 2004
Philadelphia College of Osteopathic MedicineClass of 2003
Certifications & Licensure
NJ State License 2012 - 2027
PA State License 2007 - 2026
American Board of Physical Medicine and Rehabilitation Physical Medicine & Rehabilitation
Publications & Presentations
PubMed
- 1 citationsPatterns, Efficacy, and Cognitive Effects of Medical Cannabis Use in Chronic Musculoskeletal Pain Patients.Mohammad Khak, Sina Ramtin, Juliet Chung, Asif M Ilyas, Ari Greis
Cureus. 2025-05-01 - Discontinuation rates and predictors of Medical Cannabis cessation for chronic musculoskeletal pain.Mohammad Khak, Sina Ramtin, Juliet Chung, Asif M Ilyas, Ari Greis
Plos One. 2025-01-01 - 2 citationsUnderstanding the Orthopedic Conditions for Which Patients Are Seeking Medical Cannabis Certification.Juliet Chung, Yusuf Mahmoud, Sina Ramtin, Gianna Uhler, Asif M Ilyas
Cureus. 2024-01-01
Journal Articles
- Decreased flexion contracture after total knee arthroplasty using Botulinum toxin A: a randomized controlled trialEric B. Smith · Karim A. Shafi · Ari C. Greis · Mitchell G. Maltenfort ·Antonia F. Chen, European Society of Sports Traumatology, Knee Surgery, Arthroscopy, 8/5/2016
Press Mentions
Philadelphia-Area Doctor Recommends Patients Use Medical Marijuana for Pain Relief as Safer Alternative to OpioidsOctober 23rd, 2025- Cannabis-Based Drug Works Better Than Opioids—Could It Change How We Treat Pain?October 7th, 2025
- Congress Must Rethink Its Stance on Medical Cannabis | OpinionSeptember 1st, 2025
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