Dual board certified in emergency medicine and internal medicine, Mary Gessner-Peterson, D.O. practices in Alpine at 1832 Alpine Blvd through Comprehensive Medicine and Alpine Urgent Care. Her pediatric acute-care referral pathway connects to Karen Hanten, MD at 2733 Alpine Blvd for ongoing well-child management. Dr. Gessner-Peterson graduated from the Philadelphia College of Osteopathic Medicine in 2005 after working as an emergency room nurse for over eight years, combining hands-on triage instinct with osteopathic diagnostic training. She serves as associate medical director for multiple East County skilled nursing facilities, and her internal medicine scope addresses chronic conditions alongside post-acute recovery support available at Drip Haven: Wellness and Hydration on Alpine Blvd. Highest-tier capabilities include bedside ultrasound-guided procedures, laceration repair with layered closure technique, and acute cardiac evaluation using 12-lead EKG interpretation with STEMI-alert protocol activation.