Ketamine
Ketamine works by producing a release of the glutamate neurotransmitter in the brain, allowing new synapses to form within 24 hours.
Learn MorePerson-Centered Psychiatric Care
A more compassionate approach to mental healthcare.
Cornerstone Psychiatric Care specializes in treatment-resistant Major Depressive Disorder, Bipolar Disorder, PTSD, OCD and Generalized Anxiety Disorder — with a warm, friendly environment and Board/REMS/ACLS-certified providers guiding every step.
Palm Beach Gardens, FL
Tampa, FL
Telepsychiatry Available
Board/REMS/ACLS-CertifiedCredentialed providers
Board/REMS/ACLS-CertifiedCredentialed psychiatric providers
2 Florida LocationsPalm Beach Gardens & Tampa
TelepsychiatryFrom home, work, or on the go
Personalized CareYou’re in the driver’s seat
Our Services
Comprehensive, personalized psychiatric care
From innovative treatments to ongoing medication management, every plan at Cornerstone is built around you.
Spravato®
Spravato™ is the brand name for the prescription medication esketamine, the S-enantiomer of racemic ketamine, delivered under provider supervision…
Learn MoreIV Vitamins
Vitamins are organic substances essential to many bodily functions and overall good health, playing an important role in regulating wellbeing…
Learn MoreGenetic Testing
Gain a better understanding of your genetic profile to help guide the right prescriptions and medication choices for you.
Learn MoreWeight Management
A medically supervised weight-loss program tailored to your needs — a typical program is 12 weeks, with a potential loss of 5–10% of total body weight.
Learn MoreGeneral / Adult Psychiatry
General and adult psychiatry offering management for a full range of mental health conditions.
Learn MoreChild & Adolescent Psychiatry
Personalized assessments and evidence-based treatment for children and adolescents facing emotional, behavioral, and mental health challenges.
Learn MoreMedication Management
Medication management for practically all mental health conditions, including ADHD, depression, bipolar disorder, and anxiety.
Learn MoreTelepsychiatry
Visit a psychiatric provider or therapist from the comfort of your own home, at work, or while traveling.
Learn MorePsychotherapy
Hour-long psychotherapy sessions catered to your individual needs — time to feel whole again.
Learn MoreHow To Get Started
Your first step is a simple conversation
Here’s what to expect when you reach out to Cornerstone Psychiatric Care.
01
Request a Consultation
Reach out online or by phone and our team will help you find the right starting point.
02
Complete Intake & Scheduling
Share your history so your provider can prepare for a focused first appointment.
03
Meet Your Provider
In person in Palm Beach Gardens or Tampa, or by telepsychiatry from wherever you are.
04
Ongoing, Personalized Support
You stay in the driver’s seat, with a care team guiding your progress along the way.
A warm, friendly environment with a treatment room to yourself and time built in for your recovery after treatment.
Who We Are
Psychiatric providers focused on treatment-resistant care
We are psychiatric providers specializing in treatment-resistant disorders including Major Depressive Disorder, Bipolar Disorder, Post-Traumatic Stress Disorder, Obsessive-Compulsive Disorder, and Generalized Anxiety Disorder.
A warm, friendly environment with Board/REMS/ACLS-certified providers.
Safe and effective dosing with monitoring that is minimally intrusive.
A treatment room to yourself, with sufficient time for your recovery after treatment.
The Results
Improvements in symptoms
Our patients* report sustained improvements in their symptoms after their treatments.
Depression Treatments
0%Immediately After Treatment
0%1 Month After Treatment
OCD Treatments
0%Immediately After Treatment
0%1 Month After Treatment
*As reported by Cornerstone Psychiatric Care patients. Individual results vary and are not guaranteed. Please confirm current figures and any applicable disclaimer with Cornerstone Psychiatric Care.
Our Team
Meet the people behind your care
A collaborative team of psychiatric providers, nurses, and clinical staff.
Dr. Marc Ettensohn
Founder & CEO, Psychiatrist View Profile
Dr. Brett Flanagan
Psychiatrist View Profile
Jessica Shepley
Nurse View Profile
Nadine Causey
Nurse View Profile
Jessica Magnuson
Nurse Practitioner View Profile
Heather Stetson
Psychiatric Nurse Practitioner View Profile
Sophia Wong
Marketing Director, LCSW View Profile
Jodi Sandusky
Clinical Team View ProfilePatient Stories
What our patients say
Real, unedited feedback shared by Cornerstone Psychiatric Care patients.
“I've been a patient of Dr. Ettensohn for a few years now and my experience has been nothing short of amazing. The nurses (Jess and Nadine) are the best. When I go in for ketamine treatments, I don't feel like I'm going to the doctor's office — it's such a warm environment that I feel like I'm hanging out with family.”
“Cornerstone has helped me tremendously. Everyone from office staff to clinical staff is nothing short of excellent. Dr. Flanagan spends so much time with me during my appointments and works in collaboration with his clients, which has been crucial to my success.”
“Cornerstone goes above and beyond what is commonly considered superb psychiatric care. The love, patience, and care the team fosters is a warmth that flows from their office. They devote all of their attention to every patient who walks through the door.”
“Mika, Jessica, Nadine, and Lynn are caring, professional, and so accommodating. They go out of their way to make you feel comfortable and get the best out of the treatments.”
“Dr. Flannagan is fantastic. One of the best I have had in my life.”
Insurance
Insurance we accept
Cornerstone Psychiatric Care works with the following plans and providers.
Don’t see your plan listed? Contact our team to verify your specific coverage.
Locations
Visit us in Florida
Two convenient locations, plus telepsychiatry wherever you are.
Palm Beach Gardens
Palm Beach Gardens, FL
8895 N. Military Trail, Suite 301 & 306
Palm Beach Gardens, FL 33410
Mon–Fri: 8:00am–6:00pm
Sat–Sun: Closed
Suite 301 · General Psychiatry & Medication Management
Suite 306 · Ketamine & Spravato
Tampa
Tampa, FL
13801 Bruce B Downs Blvd, Suite 305
Tampa, FL 33613 — 3rd floor, University Community Medical Center building
Mon–Fri: 8:00am–6:00pm
Sat–Sun: Closed
Full-Service Psychiatric Care
Telepsychiatry
Ready When You Are
Take the next step toward feeling better.
Reach out today to schedule an appointment or ask our team a question.
If you are experiencing a psychiatric emergency, please call 911 or go to your nearest emergency room. For the 988 Suicide & Crisis Lifeline, call or text 988.