Tidemark Therapy was formed in October 2014 to better serve the Texoma community for all of their mental health needs. The very essence and definition of Tidemark means “the point that something or someone has reached, receded below, or risen above.” We believe that you can definitely rise above your pain and/or circumstances to achieve the kind of life you would like.

Tessie Eberhart  MSN. Ed, APRN, PMHNP-BC

I am an ANCC Board Certified Psychiatric Mental Health Nurse Practitioner working in collaboration with a board-certified psychiatrist. I received my post master’s certificate as a Psychiatric Mental Health Nurse Practitioner from Texas Tech University Health Science Center in Lubbock, Texas. I also have a master’s degree in nursing education from Texas Woman’s University in Denton, Texas. I became a registered nurse 16 years ago and have worked in a variety of specialties including nursing education, mental health, women’s health, and home healthcare and home health case management. My family and I live north Texas and I am extremely excited for this opportunity to work at Tidemark Therapy and help make a difference in the lives of others. I look forward to helping people maintain their mental health as it has been a passion of mine for as long as I can remember. I understand seeking help for mental health can be an exceedingly difficult process but reaching out for help is such a brave first step and I would be privileged to help you along the way. I am very understanding and empathetic towards your needs as I understand on a personal level how hard living with mental illness can be. I never pass judgement and remain confidential at all times. I take a holistic approach to patient care and your input will be accepted and encouraged at all times. We will work together as a team and make sure all of your mental health goals have been met. It will be my privilege to assist and guide you through your mental health journey. Thank you for taking the time to consider me as your mental health provider. I look forward to meeting you and helping you in the near future.

License and Certification

  • Advanced Practice license as PMHNP from State Board of Nursing Texas
  • Board-Certified from American Nurse’s Credentialing Center (ANCC)
  • Prescriptive Authority from Texas BON
  • Texas DEA license

Client Focus

  • Grade school (starting at approximately 8 yrs. old)
  • Tween
  • Adolescent
  • Adult (18-65)
  • Geriatric

Areas of Treatment

  • Depression
  • Anxiety/Panic Disorder
  • Bipolar Disorder
  • Schizophrenia/Schizoaffective Disorder
  • PTSD
  • ADHD
  • Sleep Disorder
  • OCD
  • Soon to have Suboxone Waiver to treat Substance Use Disorder

Tessie currently accepts Medicare and will be able to see other forms of insurance clients very soon.

Brittainy Wagner

My passion is to help both couples and individuals. I understand your pain, and I understand that in seeking out a counselor it is quite possible you have not shared any of your pain with anyone else before. This can make opening up to a stranger, such as my self, difficult, but rest assured that I am patient, compassionate, and come from a place of non-judgment. I understand what it is like to not want to get out of bed in the morning because you are so depressed, or that you can’t function at work because you are too worried about all the other things and/or people in your life to be able to focus on work. I also know what it’s like, to have one foot out of the door with your relationship because you’re fighting all of the time with your partner, and you want the chaos to stop, but neither of you know how to get there. I know what struggling to just keep your head above water is like, and that is why I was called into this profession. I can help you see through the pain and turmoil, to overcome the obstacles that are hindering your life path. Once you overcome these obstacles, you will be able to live the type of life that YOU want to live. With that being said, the power to overcome what is troubling you lies in how much determination and motivation you possess. Much like the phoenix, you have the power to rise from the ashes and be transformed.

I have seven years in mental health experience, and have been providing counseling services for over three years to people in the Grayson, Cooke, Fannin, and Bryan County areas. I am trained in Emotion Focused Therapy for couples, and am pursuing certification. This therapy has 20 years of research supporting its effectiveness and has a 70-75 percent success rate for couples who have a variety of concerns, ranging from a loss of spark to infidelity to trauma.

I am a Texoma-raised counselor and my hometown is Sherman, TX. This means that I understand the unique needs of our community and am invested in making our community a happier and healthier place to live. I have also provided mental health services to people who were feeling like they were out of control, hopeless, sad, and didn’t know what to do next because they were just too overwhelmed.

I began my career by working for a local mental health community center that provided services to people who had some of the most severe diagnoses and disorders. Working at this center afforded me the unique opportunity to help people from many different walks of life, different cultural backgrounds, and who had many different struggles. My experience at the community center has also assisted me in fine-tuning my counseling skills so that I may assist people with issues or diagnoses that are often difficult to treat.

I am passionate about helping people who believe they have hit a roadblock in their life or in their relationship and are determined to regain a lifestyle that they enjoy. If this sounds like you, then please contact me. I offer free consultations.

I am currently accepting all forms of Medicaid, including Amerigroup, Cenpatico, Superior, Cigna Health-Spring, Traditional Medicaid, UnitedHealthcare/Optum, and Chip. I also accept many private insurances, including Optum/United Behavioral Health, Multiplan, UnitedHealthcare, Cigna Health Insurance, Blue Cross Blue Shield of Texas, Aetna and TriCare Standard. I am also a part of several EAP programs.

Courtney Brewer

Hi! I’m Courtney!

My journey to becoming a counselor began as a teenager when a group of extremely loving people invested in my life. They told me I could overcome any adversity that came my way.

And I believed them.

So, when it came time for me to decide what to do with that life, I knew I wanted to be a person who helped other people obtain victory over obstacles every day.

My view is that counseling, like life, is a journey. I count it both a joy, and an immense honor to be allowed to walk beside people in the pursuit of reaching their goals and becoming a better version of themselves. Each journey, and each person, is unique and unrepeatable. My goal as a therapist is to help people find joy and strength in the midst of that journey.

I am a native Texan, but spent six wonderful years in Virginia Beach, Virginia obtaining my education at a small school called Regent University. Because of an immense passion for advocacy, I also obtained a law degree there. One goal of mine is lifelong learning.

I began my career as a therapist interning at a local children’s advocacy center. Then I worked as a counselor at a local non-profit.

I’m immensely humbled to join the Tidemark team and come alongside so many wonderful people as they journey to betterment. I am particularly passionate about faith-based counseling, and counseling teens, adults, and couples.

She currently accepts UHC, Cigna, Superior Medicaid, Traditional Medicaid, and will soon be able to see folks who have Tricare, BCBS PPO, BCBS HMO, and Amerigroup and Cigna Healthsprings Medicaid.

Carla McGehee

I graduated from Dallas Baptist University May of 2014.   I did my Internship at Texoma Community Center (formerly the MHMR of Grayson County) in Sherman, TX as an Intake Specialist. I became a Texas Licensed Professional Counselor 11/2017 No. 71823. I continued at Texoma Community Center for an additional four and a half years as a mental health counselor.  I started at Tidemark Therapy as a counselor in May 2020.

I have worked with a wide variety of clients. My counseling experience dealt with people struggling with depression, anxiety, loss, trauma, chronic pain, and emotional control. I have had success with clients that have anything from a diagnosed disorder to short-term adjustment issues.

I believe that attempts at real change create losses that need to be mourned.   I have helped clients to let go of old habits that have been a comfort. In the case of situational loss, I can help with reimagining life after loss, be it the death of a loved one to a loss of a job.  I have helped others to redefine their future so they can move on.

I have had success with those who have emotional control issues by applying a program designed to help emotional issues surrounding addictions, whether it be substance or behavioral.  The addiction can be anything one uses to avoid fear or emotional pain. These can be behaviors and responses that can interfere with healthy functioning.  I use concepts of Dialectical Behavior Therapy and Cognitive Behavioral Therapy.  I break down the concepts that help provide a way of talking about thinking, without which can get very abstract.

I am also very aware of how spiritual beliefs can help with the counseling process.  With the client’s permission I am willing to use a client’s belief system to provide support and encouragement to help navigate the counseling process.

Sessions are usually 45 to 60 minutes long and go at the client’s pace. The sessions are flexible to allow time to deal with any new issues that may come up. The client is allowed to give feedback should they experience discomfort or become emotional.  I do not believe in going into all the client’s sensitive experiences in order to counsel them.  I strive to never probe areas that are not necessary to work on the client’s identified treatment goals. (These goals are defined collaboratively with the client and therapist’s input.) My goal is to never send a client out the door feeling emotionally torn up, but rather have them leave feeling hopeful. I believe, even if the subject matter is hard, it does not have to negatively affect one’s hope.

She currently accepts BCBS PPO, UHC, Cigna, Superior Medicaid, Traditional Medicaid, and will soon be able to see folks who have BCBS HMO, and Amerigroup and Cigna Health Spring Medicaid.

Michael Kaprelian

Michael Kaprelian, M.Ed., LPC-S, NCC, was awarded the Master of Education degree in Counseling from the University of North Texas in 2004. He earned Licensure in Texas as a Professional Counselor in 2008, and became a Board Approved LPC Supervisor in 2010. He has extensive experience working with teens ages fifteen and older, as well as adults in both school and private settings. As a solution-focused therapist, his goal is to assist his clients discover and recognize thought and behavior patterns that may be preventing them from experiencing more fulfilling and meaningful lives. He strives to build culturally competent, judgement-free client/clinician relationships that foster better trust and progress.

Michael’s treatment specializations include:

  • Adjusting to Change
  • Anxiety
  • Academic and Career
  • Depression
  • Gender Issues
  • Grief and Loss
  • Individuals in Addiction Recovery
  • LGBTQ Issues
  • Minority Issues

Currently accepting all forms of Medicaid, including Amerigroup, Cenpatico, Superior, Cigna Health-Spring, Traditional Medicaid, UnitedHealthcare/Optum, and Chip. Also accepting many private insurances, including Optum/United Behavioral Health, Multiplan, UnitedHealthcare, Cigna Health Insurance, Blue Cross Blue Shield of Texas. He is also a part of several EAP programs.

Kemi Adepoju

Kemi has recently joined Tidemark Therapy as an online therapist. She has extensive experience in working with Trauma/PTSD and is EMDR trained. She has also been trained in CBT and DBT therapies. She enjoys helping folks who have substance abuse history, anxiety, depression, trauma, ADHD, and family related issues and works with individuals 12 years old and up. She has a history of working in private practice and community based agencies. She has evening hours available.

She is currently on Blue Cross Blue Shield, United Health Care, Tricare, and she is in the process of getting on other insurance panels.

Amanda Knight

Amanda has recently joined Tidemark Therapy as an intake coordinator. She schedules appointments, helps with office paperwork and provides excellent customer service.  Amanda is 24 years old, with two little boys ages 3 and 4, another baby boy on the way and a fur baby named Diggs. She has a wonderful boyfriend who is a police officer. Amanda is a certified Esthetician currently going through the Nursing program at Grayson College, while working full time here at Tidemark Therapy. She enjoys singing, drawing, working out and being around her family on her days off. She is a wonderful addition to our team.

“Tidemark Therapy has many skilled and innovative therapists with a comprehensive knowledge of the profession. I highly recommend them for anyone seeking psychological services in our area.”
-Brent Phillips-Broadrick, LPC-S