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Get to Know the Providers

A B O U T  M E

Hany Ashamalla, MD

Dr. Hany Ashamalla is a Medical Doctor and double Board-Certified Diplomate in Psychiatry, Neurology and Brain Injury Medicine, and special qualifications in Addiction Medicine. He graduated from the Psychiatry Residency program at the University Of Southern California and completed his training in one of the largest residency programs at LAC+USC Medical C., Los Angeles, CA. He has been in practice for over 20 years both in the United States and abroad. He obtained two Masters’ degrees in Neuroscience and Psychopharmacology. ​Dr. A's long expertise in the art of Pharmacology and managing different psychiatric disorders in adolescents, adults, and the geriatric population, in addition to patients with special needs, has helped thousands of patients throughout the years to lead very productive careers and prosperous life. Dr. Ashamalla provided care for patients at SMI clinics, BDWMC at Inpatient, Geriatric, and ICU/Medical floor/Observation floors at Del E Webb for the last 5 years.


Hospital affiliations: Banner Thunderbird Medical Center, Banner Del Webb Medical Center, and Banner Estrella Medical Center.

A B O U T  M E

Irina Ashamalla, MSN, FNP-C, PMHNP-BC

Irina is a Double Board-Certified in Family Medicine and Psychiatric / Mental Health. She graduated with MSN with an emphasis in Outpatient Care, Public Health, and Healthcare Administration, from Western University of Health Sciences in 2012 then completed her studies at Arizona State University. She has worked at Notre Dame Behavioral Health since the very beginning of the practice in 2013, as a Practice Manager in addition to her passion for providing direct patient care.

Irina enjoys problem-oriented brief psychotherapy in combination with a psychopharmacologic approach in integrated health solutions helping people achieve a fast recovery and work on changing lifestyles.

A B O U T  M E

Trisha Overvagg MSN, PMHNP-BC


Trisha is a Board-Certified Psychiatric and Mental Health Nurse practitioner with 22 years of nursing experience. She graduated from Walden University in May 2020 with her MSN.

Trisha’s nursing experience included caring for patients from all walks of life and all states of illness, including critical care. Trisha experience includes serving as a clinical instructor for three years for two Associate Degree programs in Iowa.

Trisha is committed to caring for the patient’s well-being in a holistic manner. Her love of learning has served her well; allowing her to explore all aspects of the patient’s care in order to improve the quality of her patient’s lives. Trisha is an advocate for helping patients live the very best lives that they can.

A B O U T  M E

Hyangsook Lee Patel MSN, APRN, PMHNP-BC

Lee is a Board-certified Nurse practitioner in mental health. Lee was born in South Korea and is fluent in both Korean and English. She has worked in medical, and mental health hospitals for over 15 years and cared for a variety of patients with passion and dignity. Lee was willing to pursue an advanced career and has graduated with MSn. in 2019 at Wilkes University in Pennsylvania. 


"It is very fulfilling to see patients get better and gain their highest level of functioning in their life."


When not involved with patients in her practice Lee is looking for ways to improve mental health through research and education. 

A B O U T  M E

Genevieve Onyirimba BSN, MSN,FNP-C

Genevieve Onyirimba is a Board-Certified Family Nurse Practitioner with over 12 years of nursing experience, now advancing her career in Mental and Behavioral Health. She moved to the United States from Nigeria, where she received her Bachelor of Science in Sociology and Anthropology at Morton College, in Chicago, Illinois. She graduated and received her Bachelor of Science in nursing at Grand Canyon University in Phoenix, AZ. 


There she studied further and received her Masters of Nursing to become a Family Nurse Practitioner. Genevieve is passionate about Mental Health practice pharmacology in addition to Psychotherapy.

Contact Me 

14811 W Bell Rd

Suite 102

Surprise, AZ 85374

White Branch

Phone 623.328.7323

Fax 623.337.4917

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