Our Psychiatric Providers
Board-certified psychiatric providers dedicated to delivering compassionate, evidence-based mental health care for children, adolescents, and adults across Massachusetts and Rhode Island.
RayMex Wellness LLC is led by Nnemeka “Mex” Okpala, PMHNP-BC, APRN, a board-certified psychiatric nurse practitioner with a Master’s from Regis College and over 10 years of experience. He practices alongside Chinenye Udenna, MSN, APRN, PMHNP-BC — she brings additional expertise to the practice’s psychiatric and psychotherapy services. Together they provide medication management and psychotherapy for children, teens, and adults — in person in Stoughton, MA and by telehealth across Massachusetts and Rhode Island.
Clinical Leadership
Nnemeka Okpala
PMHNP-BC, APRN
Nnemeka Okpala, PMHNP-BC, APRN, is the Founder and Clinical Director of RayMex Wellness LLC. As a board-certified Psychiatric Mental Health Nurse Practitioner, he brings extensive clinical expertise and a deep commitment to culturally responsive, evidence-based psychiatric care.
With a passion for addressing mental health disparities and serving diverse communities, Nnemeka founded RayMex Wellness to provide compassionate, accessible psychiatric care to patients throughout Massachusetts and Rhode Island.
Chinenye Udenna
MSN, APRN, PMHNP-BC
Chinenye Udenna, MSN, APRN, PMHNP-BC, is a Board-Certified Psychiatric Mental Health Nurse Practitioner dedicated to providing compassionate, evidence-based psychiatric care for children, adolescents, and adults. She specializes in evaluating, diagnosing, and treating anxiety, depression, ADHD, bipolar disorder, PTSD, trauma-related disorders, mood disorders, and other mental health conditions.
Board Certified
Board Certified Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) through the American Nurses Credentialing Center (ANCC).
Dual-State Licensed
Licensed Advanced Practice Registered Nurse (APRN) in both Massachusetts and Rhode Island, serving patients across both states.
Advanced Training
Master of Science in Nursing with specialized Psychiatric Mental Health Nurse Practitioner training and over a decade of clinical experience.
Evidence-Based Care
Committed to evidence-based prescribing and treatment approaches, staying current with the latest psychiatric research and guidelines.
Culturally Responsive
Dedicated to providing culturally responsive care that honors each patient's background, values, and lived experiences.
All Ages
Expertise across the lifespan — serving children (ages 6+), adolescents, and adults with a wide range of psychiatric conditions.
Our Clinical Approach
Comprehensive Evaluations
Every treatment journey begins with a thorough psychiatric evaluation — including detailed clinical interviews, validated screening tools, medical history review, and collaborative treatment planning.
Personalized Treatment Plans
We develop individualized medication management plans tailored to each patient's unique symptoms, goals, and preferences — never a one-size-fits-all approach.
Collaborative Care
We work closely with therapists, primary care providers, and schools to provide coordinated, wraparound care for every patient.
Telehealth & In-Person
Flexible appointment options including secure HIPAA-compliant telepsychiatry and in-person visits at our Stoughton, MA office.
Growing Our Team
RayMex Wellness is a growing multi-provider psychiatric practice. We continue to welcome talented PMHNPs, psychiatrists, therapists, psychologists, and counselors — expanding access to culturally responsive care across Massachusetts and Rhode Island.
Our infrastructure supports a collaborative clinical team while maintaining the personalized, high-quality care our patients expect. We are building a culture that allows each provider to thrive.