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We are a compassionate private psychology practice with two offices in Randolph and Medfield, MA.
We are a multi-cultural group of male and female psychologists, and nurse practitioner, who truly believe that people have the power to 
overcome the challenges they face in life, and we are here to help.

About Us

About Us

Utilizing our extensive educational background and therapeutic experience, we offer in-person and telehealth services in Individual and Group Psychotherapy, Couples and Marital Therapy, Psychological Testing and Evaluation, and Psychiatric Medication Evaluation and Management. We provide services in several core clinical areas. We also offer consultation to public and private agencies, and educational institutions. 

Metis Safety Precautions In Response To The Coronavirus (COVID-19)

Metis is taking the following steps during the Coronavirus:

  • Our staff will wear masks or face coverings.

  • We will ask all patients to wear face coverings or a mask for in-person sessions.

  • Our staff will maintain a safe distance of 6 feet or more.

  • Restroom soap dispensers are maintained and everyone is encouraged to wash their hands.

  • Hand sanitizers that contain at least 60% alcohol are available in the therapy rooms.

  • We schedule appointments at intervals to minimize the number of people in the waiting area.

  • We ask all patients to wait in their cars or outside until 5 minutes before their appointment times.

  • Credit card pads, pens and other areas that are commonly touched are thoroughly sanitized between patients.

  • Physical contact is avoided.

  • Tissues and trash bins are easily accessible.

General Contact Information

Phone: 781.963.1200
Fax: 781.963.1201

Office Locations

490 North Main Street, Suite 2
Randolph, MA 02368

266 Main St.

Building 1, Suite 2

Medfield, MA 02052

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How can we help you?



Couples, Marital and Family  Therapy 

Group Psychotherapy 

Individual Psychotherapy

(8 years and older) 

Child and adolescent 


Psychological  Testing


Psychiatric Medication 

Evaluation and Management 

Forensic Evaluation 
competency to stand trial, criminal responsibility,
and other court evaluations) 



Law Enforcement & Criminal Justice Professionals (e.g. police officers, lawyers, 
district attorneys) 

Available for public and private agencies (forensic settings, correctional facilities and corporations), as well as 
educational institutions (schools) 

Research & Training Support
Clinical Supervision 



Forensic Mental 




Whatever your psychological or emotional needs may be, it is likely that a 
member of our clinical team will be able to meet your needs
in-person or using confidential telehealth technology (via video chat, or telephone calls).  

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Accepted Insurances

Other health insurance plans may be accepted, please call our offices to inquire. 

Allways Health Partners
Beacon health options
Blue Cross Blue Shield
Commonwealth of MA Group
    Insurance Commission
Fallon health
Harvard Pilgrim Health Care
Health Net Plan
Tufts Health Plan
United Healthcare
Value Options

Clinical Staff
Metis Psychological Associates, LLC | Priscilla Nwachukwu NP

Priscilla Nwachukwu, NP 

Nurse Practitioner

Priscilla Nwachukwu is an experienced Nurse Practitioner with more than 20 years of service in various healthcare settings. She has worked in sub-acute settings, psychiatric settings and hospitals and long term units. She is adept in psychopharmacologic review and management of psychiatric patients. Priscilla Nwachukwu graduated with a Master’s Degree in Nursing from University of Massachusetts, Boston and became certified as an Adult and Geriatric Nurse Practitioner. Ms. Nwachukwu has worked in various hospitals including Bornewood Hospital, and Caritas Norwood Hospital where she provided care for psychiatric patients experiencing multiple psychiatric disorders. In addition, she worked with a private psychiatrist in the Boston area. In addition, she has experience conducting psychopharmacology reviews for psychiatric patients in skilled nursing facilities.

Contact Priscilla Nwachukwu, NP

490 North Main Street, Suite 5,

Randolph, MA 02368 
Fax: 781-607-5600 

Telehealth (Available)

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James Tyler Carpenter, Ph.D., FAACP 

Licensed Psychologist Provider

Dr. Tyler Carpenter is a Board Certified (Clinical) Licensed Psychologist Provider who obtained his doctoral degree from St. John’s University and a Master’s degree in General-Experimental Psychology at the C.W. Post College of Long Island University. He has 33 years of professional practice experience in assessment, treatment, supervision, consultation, and research experience on psychosis, character disorder, trauma, offending behavior, suicidal patients, personality, forensics, and disability. He has provided treatments across inpatient, outpatient, and correctional settings. Dr. Carpenter’s approach to treatment and consultation is to meet the client where they are and work with them around their personal, group and organizational goals, using approaches and understandings consistent with personal, clinical, and research fundamentals, ethics,  experience, and to arrive at a mutually determined and satisfying place of resolution, closure and accomplishment on his clients’ behalf.

Contact Dr. Tyler Carpenter

490 North Main St. Suite 5

Randolph, MA 02368 
Phone: 781-963-1800

Fax: 781-607-5600 

Telehealth (Available)

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Elizabeth Louis, Ph.D

Licensed Psychologist Provider

Dr. Elizabeth Farrah Louis is a Haitian-American, licensed psychologist provider who earned a doctoral degree in Counseling Psychology from the University of Georgia and a master’s degree in mental health counseling at Boston College. She completed her clinical psychology internship at the Center for Multicultural Training in Psychology (CMTP) in the Department of Psychiatry at Boston University School of Medicine/Boston Medical Center (BMC). Dr. Louis serves children, adolescents and adults through therapy, psychological assessments, and advocacy. She has clinical experience providing therapeutic support to immigrants, refugees, asylum seekers and survivors of torture from Latin America, the Caribbean, Africa, and Asia. Dr. Louis values affirming people in all their diverse identities, cultural backgrounds, socioeconomic status, and religious and spiritual beliefs. She has worked in clinic, hospital, college university, school, and international settings (Haiti and Rwanda). She has treated persons with trauma histories, depression, anxiety, bipolar, post-traumatic stress disorder. 


Dr. Louis utilizes different interventions including cognitive-behavior therapy, cognitive processing, acceptance and commitment, dialectical behavioral, motivational interviewing, religion/spiritual approaches, trauma informed, person-centered, critical race theory, liberation psychology, multicultural, strengths-based, and gender-affirming principles. She is also a diversity, equity and inclusion consultant, conducts community mental health training, teaches counseling students, and is a mental health researcher. Dr. Louis is fluent in Haitian Creole.   

Contact Dr. Elizabeth Louis

490 North Main St, Suite 5

Randolph, MA 02368 
Phone: 781-963-12


Telehealth (Available)

Metis Psychological Associates, LLC | Sucheta Thekkedam PhD

Sucheta Thekkedam, Ph.D. 

Licensed Psychologist Provider

Dr. Sucheta Thekkedam is a Licensed Psychologist Provider with a doctoral degree in Clinical Psychology and a Master’s of Science degree in Research from Saint Louis University. She specializes in adolescent and adult mental health and multicultural psychology. She is experienced in addressing mental and behavioral health concerns of individuals across the lifespan from various socioeconomic and cultural backgrounds. She provided psychotherapy and assessment services within a pediatric unit, a homeless shelter, primary and secondary school systems, university counseling centers, and community mental health agencies/clinics. She treated individuals impaired by different psychiatric disorders, including mood and anxiety disorders, post-traumatic stress disorder (PTSD), psychosis, addictions, personality pathology, and cognitive disabilities. Dr. Thekkedam uses various therapeutic modalities, including cognitive-behavioral, dialectical behavioral, psychodynamic, existential, solution-focused, multicultural, gender-sensitive, motivational enhancement, interpersonal, client-centered, and behavioral techniques.  


Contact Dr. Sucheta Thekkedam

490 North Main Street, Suite 4 
Randolph, MA 02368 
Ph: 781-987-2102 
Fax: 781-607-5600 

Telehealth (Available)

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Seema Garg, Ph.D.

Licensed Psychologist Provider

Dr. Seema Garg  is a Licensed Clinical/Forensic Psychologist who completed her Master’s and Doctoral Degrees from the University of Connecticut in Storrs, CT.  She has over 34 years of experience helping adults (ages 18 and up) handle depression, anxiety, eating disorders, and trauma.  Dr. Garg’s treatment approach is to tap into your own inner strengths, support you through your challenges, and to explore strategies for living a more satisfying life. She prefers to understand her clients’ struggles within the larger context of their lives. She doesn’t believe that one approach fits all people or all problems. She considers therapy a collaborative process, with the goal of helping her patients find peace and purpose in their lives. Dr. Garg also extensive training and experience conducting forensic evaluations, in both criminal and civil cases.  Her goal is to provide a thorough, impartial evaluation, regardless of whom is hiring her.  She is experienced in serving as an expert witness, both for the prosecution and defense. 

Contact Dr. Seema Garg

490 North Main Street, Suite 4

Randolph, MA 02368

Ph: 781-987-2106

Fax: 781-607-5600 

266 Main St.

Building 1, Suite 2

Medfield, MA 02052

Ph: 508-530-5535

Fax: 508-507-8818


Telehealth (Available)

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Yohanna Mendez Okoli, LMHC

Licensed Mental Health Counselor

Yohanna Mendez, LMHC is an experienced psychotherapist with several years of experience working in various healthcare settings. She acquired her Master of Science in Counseling and Psychological Services at Salem State University. Her clinical training was at the Department of Mental Health’s Massachusetts Mental Center where she provided care to the underserved, chronic and severely mentally ill populations. She provides short-term and long-term individual therapy for adolescents and adults; family interviewing; group therapy; intake evaluation; crisis intervention; case administration; and consultation with community-based supports and agencies. Her therapeutic approach is a mix of multiple disciplines including psychodynamic theory, cognitive behavioral theory, positive psychology, strength-based, person-centered and solution-focused. She provides treatment for a wide range of mental health issues but specializes in adolescent development, bipolar, depression, interpersonal relationship difficulties, Latino health, trauma and PTSD. 

Contact Yohanna Mendez Okoli,LMHC

266 Main St.

Building 1, Suite 2

Medfield, MA 02052

Ph: 781-680-1030

Fax: 508-507-8818


Telehealth (Available)


Nykia Chapman

Assistant to Dr. Ebi D. Okara & Practice Manager

Nykia Chapman has over 5 years in healthcare. She is more than just our office manager – she is a gateway to a positive and seamless experience at Metis Psychological Associates LLC. Her passion lies in ensuring everyone feels respected, valued, and heard, regardless of their background.

Think of her as your friendly guide, navigating you through the administrative aspects of your care with a smile (a rambunctious one, at that!). Whether it's scheduling appointments, handling insurance matters, or simply lending a listening ear, Nykia is here to make your journey as smooth as possible.

But her dedication doesn't stop there. Nykia brings a wealth of experience from Signature Healthcare Brockton Hospital, where she honed her skills as an Administrator Coordinator in the Quality Department. That means Nykia holds herself and our practice to the highest standards, ensuring you receive exceptional care at every touchpoint.

And while she is a whiz at logistics and paperwork, Nykia believes the true heart of healthcare lies in human connection. That's why she’s constantly learning and growing, currently pursuing a Bachelor of Applied Management from Grand Canyon University. Her commitment to professional development allows her to better serve you and the Metis community.

So, whether you're a seasoned patient or just starting your journey, know that you're not alone. Nykia here to make your experience at Metis not just clinical, but truly personal. Come say hi, ask her anything, and let's work together to bridge the gap between your needs and exceptional care.

Contact Nykia Chapman

490 North Main Street

Randolph, MA 02368

Ph: 781-963-1200

Fax: 781-963-1201

266 Main St.

Building 1, Suite 2

Medfield, MA 02052


Ebi D.Okara,

Licensed Psychologist Provider

Dr. Ebi Okara has been a clinical psychologist for over 20 years. He completed his psychology internship at the Center for Multicultural Training in Psychology (CMTP) in the Department of Psychiatry at Boston University School of Medicine/Boston Medical Center (BMC). Then, he went on to finish a forensic mental health post-doctoral fellowship at Massachusetts General Hospital/Harvard Medical School.

Dr. Okara has experience working with culturally diverse individuals utilizing culturally competent treatment strategies. In treatment, he incorporates the client’s background and worldview to help develop a collaborative working relationship that leads to the relief of emotional distress.

“I am a compassionate and caring person, who puts the needs of my clients first. I view patient problems within the context of their cultural, educational, and socioeconomic background to help me determine the appropriate course of treatment. I endeavor to meet you where you are, and provide a strong support system that will allow you to grow and achieve your highest potential in life.” 


Dr. Okara's area of practice includes working with young adults to the elderly by providing individual, couple, family, and group psychotherapy; as well as, psychological evaluation.  He utilizes psychodynamic and cognitive behavioral therapy when working with patients.    


Contact Us

Randolph Office

490 North Main Street, Suite 2
Randolph, MA 02368

Phone: 781-963-1200
Fax: 781-963-1201


Medfield Office

266 Main St.

Building 1, Suite 2

Medfield, MA 02052

Phone: 508-530-5530

Fax: 508-507-8818


Contact us
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