Doctor & Staff


Dr. Bier is a Naturopathic doctor, a Licensed Acupuncturist, and holds a PhD in Human Services with a focus in Therapeutic Nutrition. He is also a Fellow of the American Board of Naturopathic Oncology.

He has worked in the health care and science fields for over 30 years in clinical, research and academic positions and brings all of those pieces together to provide the best in natural health.


Dr. Diamond-Bier, a second-year resident at HNNH, is a licensed Naturopathic Doctor who earned her Doctorate of Naturopathic Medicine degree from the Canadian College of Naturopathic Medicine. With a Bachelors of Science in Neuroscience and Behavior, and a minor in Psychology, she has a special interest in treating mental health and neurological conditions.


Clinical Staff


Kate Creighton joined HNNH in 2013 as our RN. Prior to this Kate earned her Bachelor of Arts from University if New Hampshire in Communications. Kate’s interest in naturopathic healthcare combined with providing the patient with one on one care is necessary to achieve ones optimum health.

An Individualized Approach As Unique As You Are!sm

Scheduling Information










Best in New Hampshire Magazine 2024



Top Doctor Award 2024-
Naturopathic Oncology

Best of Portsmouth Ambulatory Health Care 2017-2024