
Licensed Psychiatrist for Expert Mental Health Care in Phoenix, Arizona
Get compassionate, confidential psychiatric care through in-person appointments in Phoenix, or secure telepsychiatry services across Arizona. Shamlock Behavioral Health provide psychiatric evaluations, medication management, diagnosis, and ongoing treatment for children (8+), adolescents, adults, and seniors.
Comprehensive Online & In Person Psychiatric Services
At Shamlock Behavioral Health in Phoenix, Arizona, we offer online and in-person psychiatric care services to make mental health care more accessible, private, and effective
Psychiatric Evaluations
Comprehensive psychiatric assessments that help identify symptoms, establish diagnoses, and create individualized treatment plans
Medication Management
Ongoing medication monitoring, prescription management, dosage adjustments, and follow-up care to support safe and effective treatment
Ongoing Treatments
Regular check-ins to ensure your mental health and treatment plan is working effectively.
Condition Specific Care
Specialized in online and in- person treatment for ADHD, Anxiety, Depression, PTSD, OCD and more.

Meet Dr. Kerubo Happiness Nyachieo
Your Trusted Psychiatric Provider in Phoenix, Arizona
Dr. Kerubo Happiness Nyachieo, PhD, APRN, PMHNP-BC, is a licensed and board-certified Psychiatric Mental Health Nurse Practitioner with 20+ years of experience providing in-person psychiatric care in Phoenix and secure telepsychiatry services throughout Arizona.
She is specialized in psychiatric evaluations, psychiatric diagnosis, medication management, substance use and provides ADHD treatment, anxiety treatment, depression treatment, PTSD treatment, Mood disorder treatment, OCD treatment, Panic Disorders and ongoing mental health support for children (8+), adolescents, adults, and seniors.
Key Highlights:
✔ Licensed & Board-Certified Psychiatric Mental Health Nurse Practitioner (PMHNP)
✔ 20+ Years of Mental Health Experience
✔ Online & In-Person Psychiatric Consultations
✔ Children (8+), Adolescents, Adults & Seniors
✔ Psychiatric Evaluations & Diagnosis
✔ Medication Management & Follow-Up Care
✔ Same-Day Appointments Available
Specialized In-Person & Online Treatment for Patients Suffering from Mental Health Problems
Our psychiatric services support individuals experiencing a wide range of mental health concerns.
Insurances We Accept
We accept most insurances for mental health consultation to make therapy and treatment process as simple and affordable as we can.










How to Get Started With Shamlock Behavioral Health
Your Journey Towards Better Mental Health Made Simple and Secure
Step 1: Schedule Your Appointment for Comprehensive Psychiatric Evaluation
Book your initial psychiatric evaluation online or by phone. Choose the appointment option that works best for you an in-person visit at our Phoenix AZ office or a secure telepsychiatry appointment from anywhere in Arizona.
Step 2: Complete Your Psychiatric Evaluation
During your first appointment, we’ll discuss your mental health history, current symptoms, medical history, and treatment goals. When appropriate, validated screening tools and assessments are used to help establish an accurate diagnosis.
Step 3: Receive Your Personalized Treatment Plan
Based on your evaluation, you’ll receive an individualized treatment plan that may include medication management, therapy recommendations, lifestyle guidance, and follow-up care. Every treatment plan is based on your unique needs and clinical goals.
Step 4: Continue Ongoing Support
Mental health treatment is an ongoing process. Regular in-person or telepsychiatry follow-up appointments allow us to monitor your progress, review medication effectiveness, make adjustments when needed, and provide continued support throughout your care.
What to Expect During Your First Appointment
During your first appointment with Shamlock Behavioral Health, we’ll discuss your symptoms, concerns, medical history, and treatment goals with Dr. Kerubo Happiness Nyachieo. Our focus is on understanding your situation and creating the right treatment plan for your needs.
A comprehensive psychiatric evaluation helps identify underlying concerns, review previous treatments, and determine the most appropriate care options. If medication management is recommended, available treatment options, benefits, and next steps will be discussed clearly so you can make informed decisions about your care.
Ready To Take The First Step?

Patient Reviews
Testimonials
I will definitely be going back. Dr. Kerubo Nyachieo was a great listener and helped with exactly what I needed since moving to Arizona from a different state and helping me get on the right track with my mental health. Highly recommend.
I had a wonderful experience with Dr. Kerubo Nyachieo. She was compassionate, patient, and truly listened to my concerns without judgment. During a very difficult time, she made me feel supported and understood. Her professionalism and genuine care made a big difference in my healing process. I’m very grateful for the help and would highly recommend her to anyone needing mental health support.
Why Patients Choose Shamlock Behavioral Health in Arizona
Same-Day Psychiatric Appointments
Personalized Care Plans
Online & In-Person Appointments
Insurance-Friendly Services
Ongoing Support
Providing High Quality Psychiatric Services in Phoenix and Across Arizona
Shamlock Behavioral Health proudly provides in-person psychiatric services in Phoenix, Arizona, while offering secure telepsychiatry appointments throughout Arizona. Patients from Glendale, Peoria, Sun City, Surprise, Phoenix, Scottsdale, Mesa, Chandler, and surrounding communities can access professional psychiatric care through flexible in-person and virtual appointments.










