Dr. Katherine Ann Hollister, MD

Dr. Katherine Hollister specializes in internal medicine and psychiatry, bringing a unique dual expertise that allows her to address both physical and mental health concerns. She earned her medical degree from Pennsylvania State University College of Medicine and has been practicing for three decades. This extensive experience has given her deep insight into the complex connections between medical conditions and psychological well-being.

Dr. Hollister practices at Portsmouth Regional Hospital in Portsmouth, New Hampshire. She treats a range of conditions including skin infections like cellulitis, blood disorders such as multiple myeloma, and movement issues that cause limping. Her practice includes coordinating physical therapy for patients recovering from injuries or managing chronic conditions. She also performs diagnostic testing including hepatitis panels and comprehensive metabolic panels to help identify underlying health issues and monitor treatment progress.