Medical Team

At THC Physicians, our team of knowledgeable medical professionals focuses on ensuring our content and services uphold the highest integrity standards. Our dedicated team consists of highly qualified nurses and physicians that specialize in medicinal marijuana.

Through extensive education and research, our team curates content that is not only current, accurate, and trustworthy but can be backed up by scientific studies and factual evidence.

  • All of our new content is reviewed by medical professionals to pledge accuracy. 
  • Existing content is regularly revisited to stay up to date with the most current data to maintain your utmost dependability in THC Physicians.

Additional research is being done daily on medical marijuana. Our team ensures you can trust the knowledge we provide to be current, accurate, and with our readers’ health and safety as our top priority.

Howard Seth Meiselman, DO

Howard Seth Meiselman


License Number: OS8250

Dr. Meiselman received his medical degree from the New York College of Osteopathic Medicine and completed his anesthesiology residency at Beth Israel Medical Center, and additional residency training at Albany Medical College. He has numerous hospital affiliations including Newport Hospital, Delray Medical Center, West Boca Medical Center, Charlton Memorial Hospital, North County SurgiCenter (Anesthesiologist), Kindred Hospital of the Palm Beaches (Anesthesiologist), and JFK Medical Center (Anesthesia). He has state licensure in Florida, Rhode Island, Massachusetts, and New York.

Dr. Meiselman has been recommending medical cannabis as an alternative medicine since 2016. Combining an in-depth review of scientific research and 25 years of clinical experience has allowed Dr. Meiselman to successfully utilize medical cannabis to treat thousands of patients. He continues to compile empirical data derived from real-world patient experiences that further his knowledge and expertise in delivering the best possible outcomes for his patients.

THC Physicians
Mark Conklin

Mark Conklin is the founder and CEO of Tierra Healthcare Concepts. He has over 25 years of experience in the healthcare field working at the executive management level and as a medical professional. Education RN, BS Biology and Master of Health Administration course curriculum

Dr Saddler
Shawnette Saddler
License Number: ME109668

Dr. Shawnette S. Saddler is an internist in Coral Springs, FL and is affiliated with multiple hospitals in the area, including Broward Health Medical Center and Broward Health North. She received her medical degree from Tufts University School of Medicine and has been in practice between 6-10 years.

Dr. Celestino D Santi, DO
Celestino Santi
License Number: OS5229

Dr. Celestino Santi, DO is a Internal Medicine Specialist in Tavares, FL and has over 34 years of experience in the medical field. He graduated from New York College Of Osteopathic Medicine, New York Institute Of Technology medical school in 1987.

Gerald Leichman
License Number: ME98023

Dr. Gerald Leichman is a Internal Medicine Specialist and has nearly 50 years of experience in the medical field. He graduated from the University of Guadalajara, Mexico in 1974.

Chris Nussbaum
License Number: ME49552

Dr. Chris Nussbaum has been practicing internal medicine in Brandon since 1988. His medical education consisted of extensive studies in the United Kingdom and post graduate training, including Chief Residency, in the Trinitas Health System in northern New Jersey.

In love with Florida’s sunshine, he first practiced in Daytona Beach, then relocated to the Brandon area and practiced primary care medicine for the next 10 years. Known as an innovator, he founded Synergy Medical Group, which grew to be one of the largest and most preeminent hospitalist practices in Florida.