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About the CEO

Dr. Kerubo Happiness Nyachieo, PhD, APRN, PMHNP-BC

Psychiatric Mental Health Nurse Practitioner

Dr. Kerubo Happiness Nyachieo is a board-certified Psychiatric Mental Health Nurse Practitioner with over 20 years of experience in mental health care. She is dedicated to providing evidence-based psychiatric evaluation, medication management, and supportive therapy for children (8+), adolescents, adults, and seniors across Arizona through secure telehealth services.

Her approach is collaborative, patient-centered, and rooted in respect. Dr. Nyachieo integrates thoughtful medication management with psychotherapy techniques such as Cognitive Behavioral Therapy (CBT) and Motivational Interviewing. She is committed to helping individuals regain stability, build resilience, and improve overall quality of life through personalized treatment planning.

Guided by the belief that healing begins with understanding, Dr. Nyachieo leads Shamlock Behavioral Health with compassion, clinical depth, and a mission of Helping Minds, Healing Lives.

Why Choose Shamlock Behavioral Health?

At Shamlock Behavioral Health , we believe mental health care should be compassionate, personalized, and grounded in clinical excellence. Every individual who walks through our doors is treated with dignity, respect, and understanding. We take time to listen, provide thorough evaluations, and create treatment plans tailored to your unique needs. Our goal is to deliver care that promotes stability, confidence, and long-term emotional wellness in a supportive and safe environment.

• Personalized, Compassionate Care

We prioritize listening and understanding your story to create care plans tailored to your goals and needs.

• Inclusive Support for Ages 8 and Up

We provide mental health services for children, adolescents, adults, and older individuals.

• Evidence-Based Expertise

Our treatment approaches are guided by proven clinical practices and up-to-date psychiatric standards.

• Convenient In-Person & Telehealth Options

We offer flexible appointment options to ensure accessible, consistent, and reliable mental health care.

Our Vision

To be a trusted leader in mental health , delivering accessible, evidence-based mental health care that empowers individuals to achieve stability, resilience, and improved quality of life.

Our Mission

To provide compassionate psychiatric evaluation, medication management, and therapy through a collaborative, patient-centered approach tailored to each individual’s mental health needs.

Our Goal

To improve access to quality mental health services, reduce symptoms through personalized treatment plans, and support long-term emotional wellness and recovery.