For All People Ages 8-80
ADHD, Anxiety, Bipolar, Depression, PTSD, Schizophrenia, Substance Use, and more.
No Insurance? No Problem!
We do not bill insurance, and we offer affordable fees.
Teletherapy Available
All appointments are now AVAILABLE at your home via tele-health.

New Patient Form

Provider Referrals

Returning Patient

Quality Psychiatric Service​


Now Accepting New Patients

For all people suffering with all mental health conditions

ADHD  Anxiety Bipolar Depression PTSD Schizophrenia Substance Abuse, and More

Text or Call to Setup an Apointment

Teletherapy Services

All appointments are now available at your home via tele-health

How To Request an Appointment?

It's Simple: Choose One of Three Ways:


Text or Call 206-607-9205


Fill out our New Patient Form

Join Us for a COVID 19 Virtual Support Group

For more information email us at

We will get through this, together.


We do not bill insurance, but we offer affordable fees


60 Minutes
$ 275



50 Minutes
$ 185



25 Minutes
$ 100


Ask Us

  • Our Sliding Scale Fees
  • Insurance Reimbursement

Valhalla Building
(Next to Anchored Ship Coffee)
5306 Ballard ave Unit 208
Seattle WA 98107

About Us

At Grey Matters our goal is to provide you with a great therapeutic experience. Our approach is to display a unconditional positive regard toward you as we discover the best treatment options.

We truly love the opportunity to serve the mental health needs of Seattle and the surrounding communities.

We are a cash pay clinic, meaning we do not accept insurance. We pride ourselves on offering competitive pricing, amazing service and availability.

If you or someone you know is in crisis or experiencing an emergency, please call 911 or go to your nearest emergency room. The 24-hour Seattle area crisis line is 866-427-4747 (866-4CRISIS)

Lance Briggs


Lance grew up near Salem, Oregon, but completed his Master’s Degree in Nursing at the University of North Dakota. He worked in Houston, TX for a couple of years as a RN Psychiatric Supervisor, before returning to the Northwest. He enjoys skiing, playing guitar and watching movies (Marvel / DC).

Lance finds special interest in addiction behaviors, mood and psychotic disorders. He has a broad range of experience working with a diverse patient population.

Lance Briggs, PMHNP-BC - psychiatrist seattle


PMHNP-CARN, DNP - Psychiatric Clinician

Jacki Gervais PMHNP, CARN-AP, APRN,  is a Certified Addiction and Psychiatric and Mental Health Nurse Practitioner with over 20 years of experience working with individuals who have various psychiatric and substance abuse disorders. 

Stacie Olson


Stacie Olson DNP, APRN, PMHNP-BC is an adult psychiatric mental health nurse practitioner who graduated from the University of North Dakota (UND) with her Master of Science and Psychiatric Mental Health Nurse Practitioner degree in 2010.  She graduated in 2014 from Duquesne University with her doctorate in nursing practice (DNP).

She has experience in working with individuals with anxiety disorders, major depression, bipolar, ADHD, eating disorders, and substance use disorders. She also currently holds a faculty position at Frontier Nursing University working with a Psychiatric Mental Health Nurse Practitioner (NP) program.  

Stacie has interests in chemical dependency, suicide assessment, and working with graduate psychiatric NP students to advance the number of psychiatric NPs in rural areas.  She works for the NLN CNEA as an on-site nursing program accreditation evaluator. She has served on the local board for Sigma Theta Tau Eta Upsilon Chapter and the board for the North Dakota Nurse Practitioner Association.

Nathan Longhorn, Certified Life Coach

Nathan Longhorn

Certified Life Coach

Coaching sessions with Nathan will always be tailored to your needs and so you will naturally change over time. Nathan’s coaching sessions will gradually reveal what’s holding you back in reaching your goals. Through the sessions with Nathan, you will find out exactly what you need to do to get over your mental and emotional blocks. Nathan’s believes in 100% open and honest dialogue with the shared goal of self-actualization.

Elizabeth Vidas


Elizabeth Vidas, DNP, ARNP, PMHNP-BC is a psychiatric mental health nurse practitioner with over 8 years experience in treating people with addiction, most of whom had other mental health diagnoses such as depression, anxiety, and PTSD, with a focus on women-identifying individuals. 

Individual-centered treatment plans blend psychiatric medications with holistic interventions such as movement, adding foods (no diets), therapy recommendations, or mindfulness-based techniques. Elizabeth uses interventions that are science-based and supported by evidence.

In her free time, Elizabeth enjoys hiking, running, crocheting, and board games

Elizabeth Vidas, DNP, ARNP, PMHNP-BC

Erin - Office Manager

Erin is our office manage, and she will most likely be your first contact with our office. Erin has 10 years of experience working in the medical field in various positions. Erin works remotely from her home in Central Oregon that she shares with husband and children. She enjoys spending time with her family and friends, being outdoors, and baking.

Contact Us