About
Dr. Keith Sadel has practiced internal medicine in Southampton, Pennsylvania for over 23 years. He holds board certification from the American Board of Internal Medicine. His clinical focus spans preventive medicine, lifestyle optimization, and what he calls the merging of modern medicine with age-old holistic practices.
Early in his career, Dr. Sadel transitioned away from high-volume traditional practice to build a model centered on deep patient relationships. He serves as a member of the International Society of Travel Medicine and directs the travel medicine program at Preservation Health. He also holds certification as a Medical Marijuana physician and issues certifications to eligible Pennsylvania patients. Dr. Sadel supervises a structured lifestyle and weight management program that uses Korr Metabolic Testing to determine each patient's optimal caloric intake. Patients consistently describe him as a compassionate diagnostician who treats entire families across generations. Philadelphia Magazine recognized him as a Top Doctor in 2023, 2024, and 2025.
Education & Training
Additional Training
Member, International Society of Travel Medicine; Certified Medical Marijuana Physician (Pennsylvania)
Certifications
Conditions Treated
Who is Dr. Sadel right for?
Dr. Sadel is a strong fit for adults seeking a long-term physician relationship with a preventive focus. Patients managing chronic conditions benefit from his structured, proactive approach and regular wellness visits. Those planning international travel can use his dedicated travel medicine program. Adults interested in medically supervised weight management or medical cannabis certification in Pennsylvania will also find his clinical range well-suited to their needs.
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Frequently Asked Questions
Dr. Sadel treats a wide range of conditions within internal medicine, with a strong emphasis on preventive care and lifestyle-related health. His clinical focus includes chronic disease management, metabolic health, and overall wellness optimization. He blends evidence-based medicine with holistic practices to address each patient's full health picture.
Yes. Dr. Sadel holds board certification from the American Board of Internal Medicine. He has practiced internal medicine in Southampton, Pennsylvania for over 23 years.
Dr. Sadel sees members three to four times a year for proactive wellness visits. This schedule lets him monitor physical and emotional health over time and intervene early when needed. He focuses on catching and addressing issues before they become serious conditions.
Yes. Dr. Sadel directs the travel medicine program at Preservation Health and serves as a member of the International Society of Travel Medicine. He helps patients prepare for domestic and international travel with appropriate immunizations, medications, and health guidance.
Yes. Dr. Sadel holds certification as a Medical Marijuana physician and issues certifications to eligible Pennsylvania patients. Patients interested in this program should contact the practice to discuss eligibility.
Dr. Sadel supervises a structured lifestyle and weight management program using Korr Metabolic Testing. This testing determines each patient's optimal caloric intake based on their individual metabolism. The program provides a personalized, medically guided path to sustainable weight and lifestyle goals.
Dr. Sadel has practiced internal medicine for over 23 years, all in the Southampton, Pennsylvania area. He built Preservation Health to deliver relationship-driven, proactive care over the long term.
Yes. Philadelphia Magazine named Dr. Sadel a Top Doctor in 2023, 2024, and 2025. This recognition reflects consistent patient trust and clinical excellence over multiple years.
Doctor profile last updated March 21, 2026