Medical & Science Leadership
Dr. John Greenfield, MD

Medical Director​​

  • Medical Director, HOPE MMJ

  • Orthopedic surgeon

  • Stem Cell specialist

Dr. Howard Rubin,


Chief Science Officer,


  • Founder, HOPE MMJ

  • Medical Psychologist, Psychopharmacologist,    Pain Management Specialist

  • Medical staff, 1984 US Olympic team

  • Medical staff, Los Angeles Clippers 

Dr. Jeffrey Barris,


Formulations Advisor

  • Owner Pacifica Compounding Pharmacy

  • Preceptor Pharmacist , Doctorate, Pharmacy and Health Sciences and Chemistry, USC

Delaney Toups

Terpenes Advisor

  • Owner, D2 Custom Terpenes

  • > 100 strain specific formulations and award-winning CO2 oil

Dr. Jonathan Erber, MD

Medical Advisor

  • Internal medicine, Gastroenterology

  • Mount Sinai Hospital

  • Young Investigators Award for Capsule Endoscopy

Management Team

David Meister, CPA, MBA

Co-Founder, CEO

  • Partner, Capital Dynamics

  • Sweetwood Capital Partners

  • Senior Manager, Deloitte Private Equity

Joseph Rubin

Co-Founder, COO West



  • COO, Diagnostic Imaging Center

  • Volunteer, Coach, Educator

Steven Levy

Co-Founder COO East


  • Owner, Christi Sothers New York 

  • Benefactor, various New York civic and religious organizations

109 E. 42nd Street 

New York, NY 10017


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