Dr. Erik Christian Petersen, DO

Dr. Erik Petersen, D.O., is a Board-Certified physician and founder of FirstCall DPC, where he leads one of the nation's most comprehensive physician-led ADHD programs for adolescents ages 14 and older and adults, offering care both virtually and in person and is licensed to practice in multiple states.

He earned his Doctor of Osteopathic Medicine (D.O.) degree from Kansas City University after completing his undergraduate education at Northwest Missouri State University.

With more than two decades of clinical experience in Emergency Medicine, Internal Medicine, Pediatrics, and urgent care since 2002, Dr. Petersen delivers comprehensive, evidence-based care focused on improving both immediate health concerns and long-term wellness. 

By developing customized treatment plans and fostering long-term physician-patient relationships, Dr. Petersen helps patients improve focus, executive function, productivity, and overall quality of life with services such as:

• Comprehensive …ADHD evaluations, medication management, and ongoing physician-led follow-up
• Direct Primary Care with preventive care, chronic disease management, and same-day physician access
• Medical weight loss and metabolic optimization using evidence-based therapies and personalized treatment plans
• Men's health and hormone optimization, including testosterone, thyroid, and metabolic health management
• Functional medicine, longevity care, and advanced diagnostic testing focused on root-cause evaluation and long-term wellness

His philosophy centers on proactive, relationship-based healthcare that empowers patients to improve their health, performance, and overall well-being at every stage of life.