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Therapist in Timonium, Maryland Jonathan Cornell, Therapist

Gender Identity: Male (He/Him)

Ages Served: 3-75+

Appointments: In-office and Online

Manages Medications: No, provides therapy only

Accepts Insurance: Yes - View accepted plans

Jonathan Cornell, Therapist

Jonathan Cornell, LCPC

Specializes In:

Career & work issues
Sexual trauma
Social injustice
Trauma & PTSD
See all specialties >

Jonathan Cornell, a Licensed Professional Counselor at LifeStance Health, helps children, teens, adults, and seniors across Maryland address emotional challenges, improve relationships, and navigate complex life situations. He provides individual, couples, and family therapy, creating a supportive environment where clients feel heard, understood, and empowered to achieve meaningful change. Jonathan has extensive experience supporting clients through anxiety, depression, and trauma, as well as navigating transitions in midlife and later life. He incorporates evidence-based interventions such as Cognitive Behavioral Therapy, Mindfulness, Parent-Child Interaction Therapy, and couples counseling to help clients develop coping skills, strengthen relationships, and address behavioral and emotional concerns. He also works with first responders, military veterans, and individuals involved in adoption or foster care, recognizing the unique experiences and stressors these populations face. In addition to these areas, he offers additional specialized mental health services tailored to the needs of each client. He is particularly passionate about providing care in the context of court-ordered treatment, parental custody, and current legal matters, helping clients navigate these sensitive and often high-stakes situations with clarity, advocacy, and support. Jonathan integrates structured therapeutic approaches with empathy, assisting clients in managing ADHD, childhood behavior issues, and school avoidance, while also supporting couples and families in strengthening communication and resolving conflict. Outside of his clinical work, Jonathan enjoys hiking, landscaping and gardening on his property, collecting vintage model trains, and caring for senior dogs with special medical and emotional needs. He and his wife currently have three rescue dogs aged 9 to 13, and he finds joy in nurturing their well-being.

Types of Care & Ages Served

Areas of Focus

Family Therapy

Improve communication and resolve conflicts within family dynamics with a clinician's guidance.

  • Ability status
  • ADHD
  • Alcohol use
  • Anger issues
  • Anxiety
  • Attention & focus
  • Bipolar Disorder
  • Brain/head injuries (TBI)
  • Bullying or harassment
  • Career & relationships (mid-life)
  • Dementia & memory issues
  • Depression/feeling down
  • Domestic violence & abuse
  • Drug/substance use
  • Emotional abuse
  • Empty nesters
  • End-of-life challenges
  • Ethnic identity
  • Family conflict
  • First responder stress
  • Gambling
  • Gender identity
  • Immigration/cultural status
  • Intellectual challenges: generally independent
  • Intense mood changes
  • Military & veteran
  • Other addictive behaviors
  • Other neurological conditions
  • Panic attacks
  • Parenthood
  • Parenting
  • Pornography/sexual behaviors
  • Racial identity
  • Self-esteem
  • Self-injury or cutting
  • Sexual trauma
  • Social injustice
  • Stress management
  • Stroke-related conditions
  • Trauma & PTSD
  • Video game/internet

Individual Therapy

Get help addressing challenges and improve well-being with a clinician's guidance.

  • Sexual trauma
  • Trauma & PTSD
  • Ability status
  • ADHD
  • Adoption & foster care
  • Aging
  • Alcohol use
  • Anger issues
  • Anxiety
  • Attachment issues
  • Attention & focus
  • Autism: generally independent
  • Bipolar Disorder
  • Body image
  • Brain/head injuries (TBI)
  • Bullying or harassment
  • Career & relationships (mid-life)
  • Career & work issues
  • Caregiving
  • Childhood behavioral issues
  • Depression/feeling down
  • Detachment/disconnection
  • Dissociative disorders
  • Domestic violence & abuse
  • Drug/substance use
  • Early adulthood: Independent living or relationships
  • Early adulthood: Starting college or career
  • Emotional abuse
  • Empty nesters
  • End-of-life challenges
  • Ethnic identity
  • Family conflict
  • First responder stress
  • Focus, concentration & memory
  • Gambling
  • Gender affirming evaluations
  • Gender identity
  • General relationship issues
  • Grief & loss
  • Hallucinations
  • Immigration/cultural status
  • Intellectual challenges: generally independent
  • Intense mood changes
  • Learning challenges
  • LGBTQ+
  • Marital stress or divorce
  • Men's health/issues
  • Menopause & perimenopause
  • Military & veteran
  • Obsessive Compulsive Disorder
  • Other addictive behaviors
  • Other neurological conditions
  • Other women's health concerns
  • Panic attacks
  • Parenthood
  • Parenting
  • PMS & PMDD
  • Pornography/sexual behaviors
  • Premarital counseling
  • Psychosis/issues with reality
  • Racial identity
  • Religion & spirituality
  • Retirement
  • Schizophrenia/schizoaffective
  • School avoidance
  • School behavioral issues
  • Self-esteem
  • Self-injury or cutting
  • Sleep issues or insomnia
  • Social injustice
  • Stress management
  • Stroke-related conditions
  • Unusual thoughts or beliefs
  • Video game/internet

Couples Therapy

Helps partners address relationship conflict and improve communication with a clinician's guidance.

  • Career & work issues
  • Social injustice
  • ADHD
  • Adoption & foster care
  • Aging
  • Anger issues
  • Anxiety
  • Attention & focus
  • Bipolar Disorder
  • Bullying or harassment
  • Caregiving
  • Childhood behavioral issues
  • Domestic violence & abuse
  • Emotional abuse
  • Ethnic identity
  • Family conflict
  • First responder stress
  • Gambling
  • General relationship issues
  • Immigration/cultural status
  • Intellectual challenges: generally independent
  • Intense mood changes
  • LGBTQ+
  • Marital stress or divorce
  • Military & veteran
  • Other addictive behaviors
  • Panic attacks
  • Parenting
  • Pornography/sexual behaviors
  • Premarital counseling
  • Retirement
  • School behavioral issues
  • Sexual trauma
  • Stress management
  • Trauma & PTSD
  • Video game/internet

Languages

  • English

Education

  • Loyola University Maryland

  • Johns Hopkins University

  • Capella University

FAQs

Please call us at 667-425-5536 to schedule an appointment with Jonathan Cornell.

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See what our patients are saying about Jonathan Cornell

Jonathan has been an excellent therapist and a steady support for me. He’s thorough, asks the right questions, and listens carefully—really paying attention to what I’m saying and what I’m not saying. I’ve appreciated how grounded and practical his approach is; he offers sound, realistic guidance that helps me work through current stressors while also making sense of longer-term patterns. I always leave our sessions feeling clearer, more supported, and better equipped with steps I can actually use. He shares with humility and humanity, a pleasure to work with.
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Scepter S.

Scepter S.

Mar 22, 2026
Google Google
Working with Dr. Jonathan as our couples therapist has been a valuable experience. He created a safe and welcoming environment where both of us felt heard and respected. His guidance helped us improve our communication, better understand each other’s perspectives, and work through challenges in a constructive way. Dr. Jonathan is compassionate, professional, and insightful, and his support has made a meaningful difference in our relationship. I am grateful for the tools and strategies he has provided to help us grow both individually and as a couple.
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Yeini A.

Yeini A.

Jun 09, 2026
Google Google
My husband and I decided after 35yrs of marriage to go into therapy, Johnathan has been able to help us navigate what issues we thought we were having It's been 4wks but so far very happy with our therapist
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Paulette G.

Paulette G.

Apr 04, 2026
Google Google
The way Jonathan Cornell has helped me. Words can't explain. I just want to say thank you.
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Ernest N.

Ernest N.

Apr 20, 2026
Google Google
He is easy to talk to and very thorough.
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David K.

David K.

May 18, 2026
Google Google
Excellent experience
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Ernest N.

Ernest N.

Mar 23, 2026
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Patient Review Disclaimer

The testimonials and reviews shared on our platforms reflect the personal experiences and opinions of individuals voluntarily shared on third-party sites (e.g., Google). These reviews are voluntarily provided and are not compensated, solicited, or endorsed by LifeStance Health.

Important Notes:

  • Reviews do not represent the views of LifeStance Health, Inc., its clinicians, or affiliates
  • Individual results may vary – testimonials are not guarantees of similar outcomes
  • We do not independently verify the clinical accuracy or authenticity of statements
  • Clinician qualifications, expertise, and fit for your specific needs should be assessed through direct consultation

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