Who We Are | Hennessee & Associates

Driven by a Mission To Support and Empower

Hennessee & Associates is built on a foundation of care, respect, and dedication to helping our patients thrive.

Since 2004, our mission has been to provide high-quality psychiatric services to adults ages 18 and older. Focusing on comprehensive care, we deliver smart, effective solutions to meet each patient's unique needs. From psychiatric management to innovative therapies, we offer a breadth of expertise designed to support your mental health journey. We value every patient relationship and approach each engagement with dignity, respect, and professionalism. Our experienced team is committed to improving lives with evidence-based care you can trust.

Meet Our Providers

John Hennessee, MD

Dr. Hennessee is board-certified in psychiatry. During his 25 years of practice, he has labored across all psychiatric settings and amongst some of the most respected healthcare organizations in the United States. Through his supervision of advance practice clinicians, seminars with medical students and education of staff, Dr. Hennessee consistently utilizes his experience to impart knowledge, encourage innovation and inspire compassionate care.

Jennifer Roberts, DNP, PMHNP

Jennifer is a retired major from the United States Army. She has spent many years caring for veterans, civilian workers and their families. She has over 20 years of experience in Family practice and many years as a psychiatric nurse practitioner. Her goal is to serve mental health patients with dignity, empathy and respect. She has her doctorate degree from TCU and a master's as an FNP and PMHNP. We look forward to serving you as a team approach.

Heather Landes, LPN

Heather has assisted Dr. Hennessee in providing a variety of psychiatric services for the past 10 years. She has been instrumental in the implementation and execution of our interventional psychiatry procedures including TMS, Ketamine and Spravato.

Danetta Love, LPN

Danetta is an essential component of our clinical staff, providing TMS treatments, facilitating medication management visits, and coordinating patient care in our Oklahoma City location. She has over 20 years of nursing experience in a variety of clinical settings, including hospitals, wound care, and nursing homes.

Our Core Values

Integrity
We uphold the highest ethical standards, ensuring that every decision is made with the patient’s best interest in mind.
Compassion
Our approach is rooted in empathy, treating every individual with care and respect.
Excellence
We strive for excellence in every interaction, delivering thoughtful and evidence-based care.
Collaboration
We work closely with patients, families, and providers to create a supportive network for success.

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Careers at Hennessee & Associates

Join a team committed to making a difference in mental health care. Applicants must be licensed in their state of practice, carry a minimum of $1,000,000/$3,000,000 liability insurance, and be proficient in using electronic health records.

We're Here for You

At Hennessee & Associates, we believe that compassionate care begins with connection. Whether you’re seeking expert psychiatric services, looking for a meaningful career, or simply have questions, we’re here to help. Contact us online or call our team at 405-759-3880.

Get in Touch

Dedicated to Your Mental Health & Well-Being Since 2004