Psychiatry Clinical Trial Sites, Led by Practicing Psychiatrists
Bringing top physician-investigator expertise to every Tekton site supporting mental and behavioral health research.
Through centralized guidance, the Tekton Psychiatry Team delivers world-class site performance for mood, anxiety, addiction, and behavioral health studies.
Tekton Psychiatry Team Leaders
Ernest Graypel, MD, MHA
Ernest Graypel, MD, MHA, is a board-certified psychiatrist and CNS Principal Investigator with 20+ years in practice, experienced psychometric raters, and access to patients across mood, anxiety, and cognitive disorders.
Ravi Singareddy, MD
Ravi Singareddy, MD, is a board-certified psychiatrist and sleep medicine specialist with 15+ years in practice, 10+ years in research, experience conducting 10+ CNS trials, and psychometric rater experience across mood, anxiety, sleep, and related CNS disorders.
Mona Ershadi, MD
Mona Ershadi, MD, is a board-certified adult psychiatrist, Principal Investigator at Englewood and Suffern, and Tekton Psychiatry Team leader with 15+ years of clinical experience.
Lawrence Ginsberg, MD
Lawrence D. Ginsberg, MD, is a Houston psychiatrist and Principal Investigator with 40+ years in clinical practice and experience across 100+ adult and pediatric neuroscience clinical trials.
Andrew H. Martin, MD
Andrew H. Martin, MD, is an adult psychiatrist and child and adolescent psychiatrist with more than 20 years of clinical experience and a longstanding San Antonio practice serving children, adolescents, adults, and families.
Operational Leaders
Amit Vijapura, MD
Dr. Vijapura is a board-certified psychiatrist and addiction medicine specialist with more than 25 years of clinical research experience across psychiatry, neurology, addiction medicine, and CNS drug development. As Tekton's CNS KOL, Dr. Vijapura provides a comprehensive perspective on both the scientific and site-level execution required for successful psychiatry research.
Patricia Brown, PhD, APRN
Jeffrey Zucker, MS
Brandon Lenfest
Ashley Nagle
The Proven Site Model
The Site Partner Built to Simplify Your Next Psychiatry Study
A physician-led research model
Tekton carefully vets and selects established practicing physicians who bring clinical credibility, therapeutic expertise, and trusted patient relationships to the trials they conduct.
Paired with dedicated, full-time site staff and a centralized operational infrastructure, this physician-led model improves access to specialized populations and drives stronger enrollment, retention, adherence, and data integrity.
Select best-fit sites
Tekton recommends sites based on principal investigator experience, equipment, rater access, referral pathways, existing practice populations, and protocol fit.
Experienced CNS raters support psychometric assessments, scale consistency, rater training, and protocol adherence across participating sites.
Coordinated startup, clear ownership
Tekton centralizes key activities across regulatory, budgets, and site preparation, giving your study team a more consistent path from selection through activation.
Days from activation to FPI
A single point of coordination surfaces risks earlier, aligns sites around study requirements, and keeps responsibilities visible as the study moves toward FPI.
Recruitment: Activate fast, enroll early
Feasibility, physician databases, centralized recruitment, and site-level follow-up work as one to support your trial.
Tekton's Austin-based recruitment center drives strategy and execution across every site, with accountability underwritten at the site and study level.
Behind these processes sits a database of 340,000+ profiled participants, supplemented by physician referrals, community relationships, and disease-specific group access.
Retention: A Tekton advantage
Retention is shaped by the daily experience of participating in a trial. Clear communication, reliable scheduling, trusted site teams, and thoughtful visit support all influence adherence and continuity.
Tekton's physician relationships and dedicated research teams create a consistent local presence for participants, while centralized oversight helps sites stay aligned with protocol requirements.
That's what has driven an average 95% participant retention rate across Tekton studies (includes general medicine and vaccine studies).
Quality treated as an essential component of delivery
Tekton brings quality assurance, regulatory, clinical data, and risk management into study preparation and ongoing site execution.
Central teams support protocol training, source and electronic data capture review, document management, compliance tracking, corrective action, and inspection readiness.
Tekton's structure helps identify risk earlier, reinforce consistent processes, and protect participant safety and data integrity throughout your trial. Because Tekton partners with engaged practicing physicians, that alignment holds from the start.
Tekton Psychiatry Team Questions & Answers
Tekton evaluates studies across depression, anxiety, bipolar disorder, schizophrenia and schizoaffective disorder, post-traumatic stress disorder, obsessive-compulsive disorder, attention-deficit/hyperactivity disorder, substance use disorders, sleep disorders, and related behavioral health indications. Final site recommendations depend on the protocol, investigator experience, participant access, and site readiness.
Your Tekton Psychiatry Team Contact
Ashley Nagle
Senior Director, Business Development; Tekton Psychiatry Team Member
Ashley is adept at aligning neurology clinical trials with the right sites and investigators. She serves as a central point of contact for feasibility, site selection, contracting, and study startup.
To reach Tekton's general feasibility inbox, email , or complete the form on this page.