Britta Bartlett, Clinical Mental Health Counselor

Britta Bartlett, MA, LCMHC, LADC

Newmarket Center

Mrs. Bartlett joined Lamprey Health Care in 2019 as a licensed clinical mental health counselor. She received a master’s degree in clinical mental health counseling, concentrating on substance use, from Antioch University New England in Keene, NH. “I enjoy helping clients understand change is possible through increasing self awareness and using a holistic approach to help create meaning, balance, and joy.” Mrs. Bartlett’s clinical areas of interest include substance use, trauma, anxiety, and depression.
MY HAPPY PLACE: “The beach and nature are my happy place, and pickle ball is my new favorite activity. I love cooking and I am working on perfecting baking bagels.”



Kim Mary Cardinal MS LCMHC

Kim Mary Cardinal, MS, LCMHC

Raymond Center

Ms. Cardinal joined Lamprey Health Care in 2015 as a Licensed Clinical Mental Health Counselor. She received a Master of Science Degree in Counseling Psychology and a Master of Science Degree in Clinical Mental Health Counseling from Springfield College in Manchester, NH. “I feel those coming to therapy are brave warriors, and the therapy is supportive of that bravery.” Ms. Cardinal’s areas of clinical interest are grief adaptation and the recovery processes, schizoaffective and co- occurring disorders, anxio-depressive disorders, personality disorders, substance misuse and life transitions therapy.
IN MY FREE TIME: “I am a portrait artist, avid researcher and rock hound. I’m very interested in what exists beneath the surface.”



Harmony Costopulos, LICSW

Raymond Center

Ms. Costopulos joined Lamprey Health Care in 2019 as a Licensed Clinical Social Worker. She received a bachelor’s degree in psychology and a master’s degree in social work from the University of Maine. “It is an honor to have people share their life stories with me, and hopefully I can help them navigate through life’s challenges.” Ms. Costopulos’ clinical areas of interest include working with adolescents and adults, grief, loss, anxiety, depression, and adoption issues.
ABOUT ME: “I enjoy yoga, gardening, and travel. I strive to find work-life balance in my life.”




Astrid LaRose, MS, LCMHC, MLADC

Nashua Center

Astrid joined Lamprey Health Care in 2019 as a Master Licensed Alcohol and Drug Counselor. She received a Master of Science degree in Clinical Mental Health Counseling from Southern NH University. Her areas of clinical interest include treatment for co-occurring substance use and mental health disorders, treating individuals with traumatic experiences, while “focusing on the whole person with their strengths and abilities.”

WHERE YOU’LL FIND ME: “In my free time, you will likely find me in the outdoors – on running trails, my road bike, or exploring new hiking trails. I enjoy cooking and spending time with my family (including my pets), and friends.”



Charles Mitchell, MD

Newmarket Center

Dr. Mitchell joined Lamprey Health Care in 2019 as a part time psychiatrist.  He received his undergraduate degree in Biology and Psychology from Dartmouth College, and his medical degree from the Quillen College of Medicine in Tennessee.  He completed his residency in Psychiatry at Maine Medical Center in Portland.  He has served on the clinical faculty of Tufts and the University of Vermont Colleges of Medicine.  Dr. Mitchell works with adolescents and adults, using psychotherapy and medication, and with those struggling to recover from substance use.  “I believe in the importance of a wholesome lifestyle to maintaining good physical and psychological health.” Dr. Mitchell speaks Spanish and French, and some Portuguese.
IN MY FREE TIME: “I enjoy the outdoors, running on country roads near home, walking our Bernese Mountain Dogs, and hiking with family and friends.”



Sherly P. Winkler, LMHC

Sherly P. Winkler, LCMHC

Nashua Center

Ms. Winkler joined Lamprey Health Care in 2018 as a Licensed Mental Health Counselor. She completed her undergraduate degree at University of Miami in Coral Gables, FL and received her Master’s in Counseling from Gordon Conwell Theological Seminary in South Hamilton, MA. Ms. Winkler’s areas of interest include working with adults who have experienced trauma and young adults who are seeking purpose and meaning of life. She also enjoys working with adolescents to build and foster self-esteem. “I consider it a privilege when people are courageous enough to permit me to share their sacred space.” Ms. Winkler is also a Licensed Marriage and Family Therapist.

IN MY FREE TIME: “If I don’t have a counseling book in hand then you will find me teaching, traveling and enjoying the simple pleasure of walking trails with my boys. Husband included!”