Medical Professionals

All professionals at Harbour Towne Health PLLC maintain the highest levels of accreditation and pursue ongoing education to stay abreast of the latest trends in the medical field. Read on to learn more about our staff's experience and training.

Wayne Silver, LLP, CAADC

Wayne Silver is a graduate of Trinity International University with a Master’s of Arts in Counseling Psychology. He has been providing care as a Limited Licensed Psychologist and Certified Advanced Alcohol and Drug Counselor to the West Michigan residents since 1999.

Wayne specializes in treatment of adults and adolescents with mental health and substance use disorder. Wayne has expertise in treatment of depression, bipolar disorder, oppositional-defiant disorder, parenting issues, marriage and family problems, and divorce adjustment.

Wayne provides a warm, accepting, non-judgmental atmosphere in which to share their concerns, receive helpful input and work together toward change. His approach to treatment combines cognitive-behavioral and family systems treatment models.


Letizia Charleston, LMSW

Letizia Charleston is a graduate of Grand Valley State University with a Master’s of Social Work. She has provided counseling services to individuals within the community for over 20 years.

Letizia has experience working within the outpatient and inpatient mental health systems, the juvenile detention system and the health care system. She is specialized in working with individuals who struggle with depression and other mood disorders. She also specializes in treating varying degrees of anxiety and panic disorders. She has a great deal of experience working with people who have a history of trauma. In addition, she provides services to help those people managing chronic pain, loss and grief.

Letizia feels, the most important element of providing effective services is the relationship between therapist and patient. She offers a non-judgmental, confidential, safe environment in which to explore those issues limiting personal growth. She employs proven strategies using cognitive behavioral therapy and solution-focused techniques. She routinely emphasizes the importance of relaxation, meaningful activity, and balance in day-to-day life.

Letizia believes her experience, energy and dedication allows her to effectively support individuals in a process of personal growth and healing.


Amber Shull, PA-C

Amber Shull is a graduate of Michigan State University with a Bachelor’s of Science in Physiology and a graduate of the Physician Assistant program at University of Detroit, Mercy. She has been working in the West Michigan area since 2002, previously specializing in Family Medicine and Pain Management.

Amber currently specializes in Psychiatry, providing treatment to pediatric patients raging from age 6-18 and adults with depression, oppositional defiant disorder, obsessive compulsive disorder, reactive attachment disorder, autism spectrum disorder, anxiety, post-traumatic stress disorder (PTSD), ADD/ADHD, bipolar disorder, schizophrenia and other related disorders.

With pain management experience, Amber understands the correlation of chronic pain and how it affects all aspects of mood, and how mood affects pain perception.


David Wilkins, PA-C

David Wilkins is a graduate from Western Michigan University, Eastern Michigan University, Air Force School of Aerospace Medicine Program, and Air Command and Staff College. He has been in practice as a Family Medicine Physician Assistant since 1991 and in the Muskegon area since 1993.

David is a 30 year veteran of the United States Air Force and United States Air Force Reserve. He has practiced on 5 continents from the Deserts of Iraq to the dark jungles of the Amazon in South America. He is deeply committed to serving the Muskegon Area Veterans, as he has a thorough understanding of the VA system, and the medical and mental issues.

David is dedicated to providing the high quality medical care for all ages. He utilizes new technology and keeps up-to-date with current trends in the health care industry, which he provides his patients with the best treatment plans to maintain a great healthy lifestyle.


Dana Cochrane-Hoekstra, PA-C

Dana Cochrane-Hoekstra provides psychiatric evaluation and psychotropic medication management to children, adolescents and adults. She received her Master’s Degree in Physician Assistant Studies in 2001.

Prior Work experience includes child welfare system. After receiving her physician assistant certification, she worked 8 years in family practice before specializing in psychiatry. She was trained in psychiatry while working in Corrections and then briefly at Community Mental Health before going into private practice.

With over 27 years of mental health experience, she has found a true passion in psychiatry.