Monday - Friday 8:00 a.m. – 5 p.m.

Saturday and Sunday - CLOSED


0 +
Completed Studies
0 +
Expert Team Members
Phase I - IV Sites

Welcome to Pillar Clinical Research


Pillar Clinical Research was founded in 2007 by Brian Craig, MA, ThM, LPC, and a board-certified clinician.  Before establishing Pillar Clinical Research, Brian founded Pillar Mental Health Systems and worked with leading mental health inpatient providers in Central Texas, conducting clinical trials. He is recognized as an industry-leading psychometric rater with over 25 years of experience in central nervous system clinical trials. As the president of the Translational Medicine and Drug Discovery Unit, Brian continues to serve Pillar Clinical Research as a psychometric rater and sub-investigator in Richardson, Texas.


In 2020, Carol Witham joined Pillar Clinical Research as CEO and leveraged over 20 years of successful experience in clinical research and advocacy. In addition to owning and operating a thriving outpatient program for adults in Central Arkansas, she was the founder and CEO of a leading clinical research company.


In 2007, Pillar consisted of one location with 20 beds in Richardson, Texas. Today, Pillar consists of four multispecialty sites, all capable of phase I through IV clinical trials, with a combined capacity of 142 beds across three states. Our growth strategy goals have been achieved to the point that we have expanded according to the market’s needs with locations in these dynamic markets:

Dallas-Fort Worth, Texas

Chicago, Illinois

Bentonville, Arkansas

Little Rock, Arkansas

Our Vision

The vision of Pillar Clinical Research is to become the volunteer-centered clinical research organization of reference to pharmaceutical and biotechnology sponsors for managing central nervous system clinical trials and developing innovative treatments worldwide.

Our Mission

Our mission is to provide a professional and honest approach to clinical trials for the pharmaceutical and biotechnology industries so that we may accelerate the development of new, safe, and effective medical therapies for the benefit of the volunteers we serve.

Our Services

Building a Healthier Future

Learn more about what it’s like to volunteer for and participate in a clinical trial. See what current study options are available for you at your closest Pillar study site. No health insurance is needed to participate. Learn More

Pillar Clinical Research has the experience and expertise to help shape protocols during the design stages, conduct Phase I through IV trials, pilot new technologies, and provide free consulting to Sponsors and CROs to partner for success.

Learn More

Pillar Clinical Research collaborates with local clinics, agencies, advocacy groups and health systems to provide education and research options for your patients and their loved ones. Let’s support each other! Learn More
About Pillar

Excellence, Innovation & Integrity

Pillar Clinical Research provides numerous mental health research study opportunities for volunteers in our local communities. Get to know Pillar and how we can work together toward a healthier future.

Expert Investigators

Our Principal Investigators (physicians) have the experience and expertise in conducting pivotal inpatient and outpatient trials for schizophrenia, bipolar disorder, depression, addictions, and more.

Inpatient & Outpatient

All of our locations have inpatient as well as outpatient clinical trials capabilities for studies that require post-dose and overnight monitoring.

Experienced Staff

Pillar Clinical Research employs highly trained and skilled clinical research staff committed to providing each participant with an exceptional level of care and attention. 

Community Impact

Pillar Clinical Research supports and collaborates with local and national advocacy groups in an effort to make an impact in our local communities. Contact us today to make a difference!

Hi, we’re Pillar Clinical Research.

Our Mission is to Provide a Professional and Honest Approach to Clinical Trials

Getting involved is simple and can make a significant difference. Advancements in medicine are not possible without volunteers like you. See if you qualify for an available study today.

Get Involved Today

Join a Study

Letter from Our CEO

Mental Wellness Month

January is Mental Wellness Awareness Month, a time to highlight how mental wellness intertwines with physical wellness. 

Mental wellness involves:

  • Being able to cope effectively with the difficulties of life.
  • Having an awareness of your abilities and opportunities.
  • Having healthy relationships with yourself and others.

This first month of the year allows us to check in with ourselves and our loved ones to see how they are doing. New Year’s resolutions often focus on physical fitness, but we should also remember that mental health is just as important as physical health in our lives.

Mental Wellness Awareness Month is a reminder to take better care of your mental health, release stress, become happier, and improve the quality of your relationships. You can participate by spending more time with your loved ones, being grateful for what you have in life, planning a trip, and becoming skilled at self-care.

Mental health is affected by many things, such as work, school, relationships, financial problems, and excessive stress. Physical factors like illness can make you susceptible to mental wellness issues. You may be new to working on mental wellness. There are several areas to consider that impact your overall wellness. Select one area and take a step toward improvement every day. 

  1. Try to relax and reduce stress.
  2. Find ways to learn and be creative.
  3. Spend time in nature.
  4. Connect with others.
  5. Look after your physical health.
  6. Try to improve your sleep.

Maintaining your mental wellness is not always easy, but it is crucial.



Carol Witham

Chief Executive Officer

Our Locations

Dallas-Fort Worth, Texas

Founded in 2006 in Richardson, Texas, our flagship location has Phase I-IV capabilities with a dedicated outpatient program and a 60-bed inpatient research unit.

Chicago, Illinois

Based near the heart of downtown Chicago and opened in 2018, this site conducts Phase I-IV studies and features outpatient space, a 24-bed inpatient research unit, and a dedicated Phase I unit with 50 beds.

Little Rock, Arkansas

Located in Arkansas' capital and established in 2022, this facility conducts Phase I-IV studies and features an 8-bed inpatient unit and outpatient space.

Bentonville, Arkansas

This modern center in Northwest Arkansas opened in 2019 and conducts Phase I-IV inpatient and outpatient studies. This location features a 24-bed inpatient unit, a 24-bed Phase I unit, and an indoor smoking lounge.

Contact Us

Contact Us

Nullam quis risus eget urna mollis ornare vel eu leo. Aenean lacinia bibendum nulla sed 

Subscribe to our newsletter
Newsletter Subscription

Nullam quis risus eget urna mollis ornare vel eu leo. Aenean lacinia bibendum nulla sed 

Subscribe to our newsletter

Sign up to receive updates, promotions, and sneak peaks of Swab Test. 

Promotion nulla vitae elit libero a pharetra augue