Licensed and Board-Certified Providers

Scottsdale Mental Health & Wellness Institute is founded by Dr. Roland Segal and Dr. Ehab Abdallah. Both psychiatrists are licensed and have multiple board certifications and over a decade of proving holistic psychiatric treatment and care. They are involved in regional and national professional organizations and have held Medical Directorship positions across the nation. Both Dr. Segal and Dr. Abdallah are Clinical Assistant Professors of Psychiatry with the University of Arizona. Dr. Segal was also recognized as one of the top psychiatric doctors by Phoenix Magazine in 2020.

Managing Partners

Dr. Roland Segal, M.D.

Roland Segal, M.D.

Dr. Segal completed his medical school education at the University of Arizona, College of Medicine, in Tucson, Arizona. He continued training in a general psychiatry residency at Banner Good Samaritan Medical Center in Phoenix, Arizona. Then Dr. Segal completed a forensic psychiatry fellowship at the University of Southern California, Keck School of Medicine, in Los Angeles.

Dr. Segal is double board certified in General and Forensic Psychiatry.

Dr. Segal is the Chief Medical Officer at the Valley Hospital in Phoenix, Arizona.

Dr. Ehab Abdallah, M.D.

Ehab Abdallah, M.D.

Dr. Abdallah obtained his medical degree from Alexandria University in Alexandria, Egypt. He completed his residency training in psychiatry at West Virginia University.

Dr. Abdallah is a triple board-certified in General Psychiatry, Consultation-Liaison (Psychosomatic) Psychiatry, and Addiction Psychiatry.

Dr. Abdallah is experienced in treating psychiatric illness in people with complex medical/mental conditions and is an expert in addiction medicine. He is passionate about quality care.


Dr. Lauren T. Bonner, M.D.

Lauren T. Bonner, M.D.

Lauren Tosca Bonner, MD is double-board certified in Psychiatry and Geriatric Psychiatry. She has extensive experience in patient care in the inpatient and outpatient settings. She has provided care to patients in academic, public and private health care sectors. Dr. Bonner has participated in patient centered research in the fields of Post Traumatic Stress Disorder, Alcohol Use Disorder, Alzheimer’s Disease/Dementia and Schizophrenia. She was the recipient of a grant from the National Institute of Health to research a treatment for agitation in Alzheimer’s Disease. She was chosen to present her research at the International Alzheimer’s Disease Scientific Meeting in Stockholm, Sweden. She has written and co-authored a number of journal articles that have been published in a number of peer reviewed journals including Neurology and Academic Psychiatry. She has also coauthored book chapters in publications such as the Medical Clinics of North America and the Textbook of Geriatric Psychiatry. Dr. Bonner’s academic and patient care excellence has been recognized by her election to the Alpha Omega Alpha Honor Medical Society and her recognition as a Leonard Weisskopf Scholar. Dr. Bonner has extensive experience in the care of patients with Mood Disorders, Trauma Spectrum Disorders such as PTSD, Psychotic Disorders, Substance Use Disorders, ADHD, Alzheimer’s Disease and other Dementias and Women’s Mental Health Issues.

Dr. Bahar Altaha, M.D.

Bahar Altaha, M.D.

Dr. Bahar Altaha is triple board certified in General Psychiatry, Child and Adolescent Psychiatry, and Psychosomatic Medicine. Dr. Altaha completed her medical training at the University of Hamburg School of Medicine, in Hamburg, Germany. She has trained in Internal Medicine at Johns Hopkins Hospital in Baltimore, MD, and in General Adult and Child- Adolescent Psychiatry at West Virginia University in Morgantown, WV.

Dr. Altaha has received significant Honors and Awards including, the Community Service Award for Outstanding Leadership, awarded by WVU Department of Behavioral Medicine and Psychiatry, and additional awards for Outstanding Academic Achievement in Electroconvulsive Therapy.

She has been published in Sage Encyclopedia of Abnormal and Clinical Psychology, Current Psychology, and J ECT and has provided numerous presentations nationally and internationally related to her field. At West Virginia University she was holding various directorship positions, training medical students, residents, and fellows. Currently, Dr.Altaha is an Associate Professor at the University of Arizona College of Medicine-Phoenix Department of Psychiatry.

In addition, Dr. Altaha is fluent in English, German, Farsi, and French. Dr. Altaha has been a great asset to the team at Scottsdale Mental Health and Wellness Institute.

Fariba Pfitzner, M.D.

Fariba Pfitzner, M.D.

Dr. Fariba Pfitzner is a board-certified psychiatrist, specializing in adult, child, and adolescent psychiatry. Dr. Pfitzner completed her medical training at Ludwig-Maximillian University School of Medicine, in Munich, Germany. She completed her residency in adult psychiatry and two-year subspecialty fellowship program in child and adolescent psychiatry at the University of Rochester in Rochester, NY. She was the chief resident in the child psychiatry fellowship program.

Dr. Fariba Pfitzner is licensed to practice medicine in Arizona, New York, and the European Union. Before entering private practice, she worked as the Director of the Adolescent Inpatient Unit at the Arizona State Hospital. Her professional experience also includes working for many years in community mental health clinics providing psychiatric services involving a multidisciplinary team approach.

Dr. Pfitzner has been practicing in a private setting since 2008 and focusing on both child, adolescent, and adult psychiatry providing comprehensive psychiatric evaluations, pharmacological treatment, and psycho-educational supportive therapy. Dr. Pfitzner’s treatment approach is inspired greatly by her training in family therapy and working closely with the family therapy department at the University of Rochester. She approaches her treatment with emphasis on teamwork and collaboration with the patient, family, school, and other providers including therapists, pediatricians, primary care physicians, and psychologists.

In addition, Dr. Pfitzner is fluent in many languages and has an established reputation in the Valley. She is providing great support to the Adolescent Intensive Out-Patient Program at Scottsdale Mental Health and Wellness Institute and we are proud to have her as a member of the team.

Andrea Raby, D.O.

Andrea Raby, D.O.

Dr. Andrea Raby is a diplomat of the American Board of Psychiatry and Neurology in General Psychiatry. She is also Board Certified in Tele-Mental Health and Medication Assisted Treatment (MAT).

She completed her undergraduate degree in Psychology and Chemistry at Arizona State University and was also a member of their Honors College. She attended medical school at the University of North Texas Health Science Center and ultimately completed her residency at Maricopa Integrated Health/County Hospital.

She has extensive clinical experience in community and hospital-based psychiatry. For over fifteen years, Dr. Raby has provided forensic evaluations for the acutely ill, as well as court testimonies for those on court order evaluations. In addition, she is an Inpatient Attending at Valley Hospital, and has extensive experience in treating patients in the outpatient setting.

Dr. Raby now brings her expertise to the SMHWI team, in treating and addressing the needs of the outpatient population. Dr. Raby was born and raised in Arizona, is married, and has five children. She loves to balance her family and professional life with her outlet of endurance running.

Medical Doctors

Gargi Dwivedi MD

Gargi Dwivedi MD

Dr. Gargi Dwivedi, MD, graduated from M.G.M. Medical School, Mumbai, India in 1999. She finished her residency at St, Joseph’s Hospital, Phoenix, Arizona in 2005. She is board certified in Family Medicine. Her practice focuses on comprehensive office-based integrated care.

She has been practicing primary care in the Scottsdale community for almost 20 years. She is passionate about continuity of care and has enjoyed taking care of many generations of her patient’s families.

She has particular interest in women’s health, starting from puberty to menopause. She believes in mind-body wellness, and is a promoter of lifestyle modification and integrated medicine. She enjoys spending time with her three kids as well as cooking, music, and exercising-particularly yoga.

Physician Assistants

Tara Iacono, PA-C

Tara M. Iacono, DMSc, PA-C

Dr. Tara Iacono is a nationally certified physician assistant specializing in psychiatry and addiction medicine. She graduated with honors from the St. John’s University Physician Assistant program in 2006 and earned a Doctor of Medical Science (DMSc) with a concentration in healthcare administration and leadership from Rocky Mountain University of Health Professions in 2021. Dr. Iacono is an active advocate for her profession in the PA community and is a member of the American Academy of Physician Assistants and the Arizona State Association of Physician Assistants. Dr. Iacono feels honored to care for her patients during some of the most challenging times in their lives. Her approach to their care is holistic, collaborative, and compassionate.

Victoria Emanuelson, MPAS, PA-C

Victoria Emanuelson, MPAS, PA-C

Victoria Emanuelson, MPAS, PA-C, is a nationally certified Physician Assistant. She graduated from Stephens College in Columbia, Missouri, and recently relocated to the Phoenix area. Over the course of her training, she worked with diverse patient populations in a variety of clinical and geographic settings. Victoria enjoys working with patients of all ages and sees patients ages 17 and older. She provides psychiatric assessments, diagnosis, and treatment plans, as well as medication management. She is a member of the American Academy of Physician Assistants and the Arizona State Association of Physician Assistants. She is empathetic and collaborative in her approach to patient care and is passionate about patient education and improving patients’ quality of life. Victoria has a special interest in treating patients living with chronic conditions, members of the LGBTQ+ community, and patients with complex family backgrounds. Victoria is looking forward to exploring Arizona and putting down roots in the community with her family.

Paul Hilmo, PA-C, MPAS

Paul Hilmo, PA-C, MPAS

Paul Hilmo, PA-C, MPAS, is a nationally certified Physician Assistant. He graduated from the Northern Arizona University Physician Assistant Program in Phoenix in 2014. Over the course of his career, he has worked with a diverse range of patients in a variety of clinical settings. Mr. Hilmo enjoys working with patients of all ages and sees patients ages 18 and older. He provides psychiatric assessments, diagnoses, and treatment plans, as well as medication management. He is holistic and collaborative in his approach to patient care and is passionate about patient education and improving patients’ quality of life. Mr. Hilmo is a member of the American Academy of Physician Assistants and the Arizona State Association of Physician Assistants.

Nurse Practitioners

Samantha Willen

Samantha Willen, DNP, PMHNP-BC

Samantha Willen, DNP, PMHNP-BC is a Board Certified Psychiatric Mental Health Nurse Practitioner. Samantha graduated from Oregon State University in 2012 with a Bachelor of Science in Human Development and Family Sciences. She then went on to receive a Master’s in Science, Entry to Nursing in 2013 and Doctor of Nursing Practice in Psychiatric/Mental Health in 2018 from the University of Arizona.

Samantha has previously worked at Maricopa Integrated Health Services (now Valleywise) for two years and Lifewell Behavioral Wellness for the past year, working with individuals diagnosed with Serious Mental Illness (SMI). Samantha utilizes an individualized approach to mental health, using evidence-based medicine to provide high value care.

Jose A. Rodriguez, PMHNP-BC

Jose A. Rodriguez, PMHNP-BC

Jose A. Rodriguez, PMHNP-BC is a board-certified Psychiatric Mental Health Nurse Practitioner. Jose graduated from Oregon Health & Science University in 2013 with a Bachelor of Science in Nursing. He then received a Master of Science in Nursing with the specialty of Psychiatric Mental Health in 2021 from Frontier Nursing University. Jose specializes in treating patients throughout their lifespan and is passionate about aiding military veterans suffering from PTSD, depression, anxiety, and substance abuse. Jose’s work experience includes 9 years as a critical care nurse and crisis nurse in Boise, Idaho. Jose has a total of 18 years in the United States Army Infantry with six of those years in active duty. He is a Sergeant First Class and is currently serving in the Oregon Army National Guard. Jose recently moved to Arizona with his lovely wife and two sons and is looking forward to exploring the “Grand Canyon State”. Not only does Jose provide evidence-based pharmacological therapies to help patients struggling with their mental health, but he also utilizes a patient-centered approach which individualizes the plan of care to the patient.

Emina Foci

Emina Foci PMHNP-BC

Emina Foci holds a Doctorate in Nursing Practice with a specialty in Adult Psychiatric/Mental Health. Along with that, she holds a Master’s in Science and Leadership. She is board certified as an Adult Psychiatric and Mental Health Nurse Practitioner.

She started her career as an RN in 2003 at Barrow Neurological Institute where she gained invaluable skills as a healthcare professional. In 2010, she became a Psychiatric and Mental Health Nurse Practitioner and started working for private practice. During that time, she also became a professor and pursued her passion for teaching and patient care at the same time.
Over the years, she has worked in various areas of the mental health field including inpatient, crisis, outpatient, SMI, and general mental health.

With her vast experience in the field of mental health and natural ability for problem-solving, she is eager to take on the most complex of cases. With genuine empathy and understanding of the human experience, she will take on a humanistic and “down the earth” approach to help improve your quality of life. She will focus on evidence-based practice to ensure your care is safe and efficacious.

Logan Carton, NP PMHNP-BC

Logan Carton, NP PMHNP-BC

Logan Carton, NP PMHNP-BC is a Board Certified Psychiatric Mental Health Nurse Practitioner. Logan graduated with his Bachelors in Nursing from Grand Canyon University in 2014. He then received his Master’s of Science in Nursing with the specialty of Psychiatric Mental Health in 2022.

Logan has previously worked as an ACT nurse at Terro’s for two years. He then transitioned to the inpatient setting at Banner Behavioral Health Hospital. At Banner, he started as a floor nurse, was promoted to unit manager and then house supervisor. Logan is passionate about using a patient centered approach and being a part of a treatment team that helps individuals heal.”

Laura Hickman, FPMHNP-BC

Laura Hickman, FPMHNP-BC

Laura Hickman, is a Board Certified Family Psychiatric Mental Health Nurse Practitioner (FPMHNP-BC). She graduated with a Bachelor’s of Science in Nursing (BSN) degree from the University of Iowa in 2002 and a Master’s of Science Degree in Nursing (MSN) from Saint Louis University in 2013. She completed her medication management internships through several private practices in Minnesota from 2009-2013, and was also heavily trained in Dialectical Behavior Therapy.

Laura Hickman has nearly a decade of providing evidence-based medication management and therapy care to adolescents and adults (through the lifespan). She worked in Community Mental Health clinics and private practices in the Phoenix and Tucson areas. In addition, she has also been trained in Transcranial Magnetic Stimulation (TMS) and Medication Assisted Treatment (MAT). Her provider approach is to help empower patients by using team-based care (you + her) and strives to provide hope and motivation to maximize the road to wellness.


Jacob Johnson, LPC

Jacob Johnson graduated from Northern Arizona University in 2015 with his Master’s Degree in counseling after receiving his Bachelor’s Degree in philosophy there prior. He started his counseling work in the field of substance use and co-occurring disorders working inpatient in Flagstaff and Prescott before moving back to Phoenix where he has worked as both an outpatient counselor and a clinical supervisor.

He is a licensed professional counselor who has worked extensively with adults, adolescents, and families in the fields of substance use, co-occurring disorders, and general mental health utilizing a combination of cognitive-behavioral therapy, mindfulness-based stress reduction, motivational interviewing, and positive psychology.

Administrative Staff

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