CenExel map (1)We are now… CENEXEL

On June 16, 2022, Apex Innovative Sciences, parent company of Hassman Research Institute (HRI) and Collaborative Neuroscience Research (CNS), was acquired by CenExel Clinical Research.

CenExel now comprises 19 of the most proficient, therapeutically-focused, wholly-owned clinical research sites in the country, with special emphases on Psychiatry, Neurology, Pain, Human Abuse Liability, Vaccines/Immunology, Dermatology, Ethnic Bridging, Sleep, and Clinical Pharmacology/Phase I. On a combined basis, CenExel’s clinical research units have more than 500 inpatient beds with the ability to perform both simple and highly complex early phase trials. Each of the CenExel Centers of Excellence units has an outstanding track record of assisting pharmaceutical sponsors with protocol development, study design, and conduct in Phase I-IV trials to develop new therapeutics for improved patient care.

For more information, please visit www.cenexel.com

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About Us

CenExel Centers of Excellence provide unparalleled medical and scientific support in the design and execution of clinical trials. Our attention to detail assures quality results that you can trust. We consistently achieve and exceed our patient recruitment goals. All of our Centers of Excellence have highly experienced Principal Investigator physicians and research staff.

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Apex Trial Site Organizations

Apex was formed through the merger of Collaborative Neuroscience Research (CNS) and Hassman Research Institute (HRI), leading trial site organizations based in Southern California and New Jersey, respectively. CNS and HRI have harmonized procedures and technology across sites, enabling efficient and synergistic two-site solutions with rapid enrollment.

HRI logo 2

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Turnkey Biomarker Solutions

Apex sites offer turnkey solutions for neuroimaging data acquisition and analysis as well as EEG/ERP-related endpoint selection, collection, and analysis. Our scientific leaders ensure that our facilities for imaging and electrophysiology operate with the world-class scientific rigor expected from academic institutions while working at the speed of business.

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Specialized Studies

Our Experts


Leadership Team

Unmatched expertise in study
design and execution


Affairs Team

Thought leaders in complex
biomarker studies


Advisory Board

Eminent experts in central
nervous system research



Highly experienced research

Apex By The Numbers

Apex’s trial site organizations, CNS and HRI, have:

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