Back to Find a Doctor Marc Arens, DO Marc Arens, DO Specialty: Pediatrics Hospital Privileges: Ascension St. John Hospital Medical Education: Michigan State University College of Osteopathic Medicine Board Certification: ABMS Board of Pediatrics Profile: Dr. Marc Arens graduated from Michigan State University College of Osteopathic Medicine in 2002. He completed his pediatric residency at St. John Hospital and Medical Center in 2005, and is board certified in Pediatrics. He has a special interest in sports medicine and asthma.Dr. Arens is a member of the American Medical Association, American Osteopathic Association, American Academy of Pediatrics, and American College of Osteopathic Pediatricians.He joined Cornerstone Pediatrics in January 2013 and is on staff at St. John Hospital in Detroit. Dr. Arens provides healthcare for infants, children, and young adults from birth to 21 years of age.We encourage parents to choose a primary physician for their child's well care, but understand that in the case of same-day sick visits you will be able to see an alternate physician. We pride ourselves in providing personal and friendly care while keeping abreast of the most current advances in pediatric health.