Our Staff


Kati Guada, PsyD

I opened Guada Psych Services to fill the gap in quality mental health care that is now available to all people. I am very lucky to have found wonderful people to work alongside in fulfilling this endeavor. I got into mental health because I have always had a strong interest in human behavior and relationships as well as language and social patterns, which are a great fit for the field of clinical psychology. More importantly, though, I have always had compassion for people and the circumstances surrounding their mental health. Guada Psych is a place where all people can come to receive top-notch care by highly skilled professionals who take a patient-centered approach. We offer therapy and diagnostic services in an outpatient setting and are available for individuals ages ten and up.


Education and Training

I earned my BA from Indiana University in beautiful Bloomington, IN. Intent on deepening my cultural understanding of people, I then spent an extended period working in Beijing, CN, as well as deepening my understanding of Latino/a culture. Upon returning to my home city of Chicago, IL, I entered five years of study and clinical practice at the Chicago School of Professional Psychology where I earned my doctoral degree. While on this journey, I learned to treat even the most serious mental health difficulties. I also figured out how to navigate the mental health system so that the best outcomes are obtained for all patients served at Guada Psych. With regards to theoretical orientation, I rely on my Psychodynamic roots to understand people, and I am skilled in a range of interventions.


Patients and Problems Treated

I love to work with angry/depressed and anxious adolescents as well as their family members, and I have extensive experience in this area. I also enjoy working with adolescent patients with trauma histories who have difficulty in their relationships and who struggle to find happiness on a regular basis. I work with a considerable number of teens who deal with anxiety, including social anxiety. I meet patients where they are at and evaluate their mental health needs to put together a treatment plan that will lead to positive health outcomes.


Liara Montesano, PsyD
Clinical Director of Training

Dr. Liara Montesano has been practicing at Guada Psych since October of 2019 and has proven to be an invaluable asset to our team. According to Dr. Montesano, "I view human beings as having vast amounts of potential that is often held back by different complications. I chose clinical psychology because of my desire to see individuals become the best versions of themselves." Today, Dr. Montesano works with adult patients in therapy and assessment/evaluation. She is also the clinical director of our training program. Dr. Montesano's patients have often reached out to give feedback regarding how much they appreciate her sharp skill set and warm approach.


Education and Training

After finishing her BA in clinical psychology at Florida State University, Dr. Montesano completed five years of intensive study at the Chicago School of Professional Psychology. This schooling required clinical rotations at multiple facilities, and she earned positions at some of the most difficult training sites, including Northwestern University’s Family Health Center and Illinois Masonic Medical Center. As a clinical psychologist, she is highly qualified to treat your difficulties, and she can speak both English and Spanish fluently. Dr. Montesano is strongly influenced by Psychodynamic theory in working with patients.


Areas of Expertise

Dr. Montesano provides therapy and assessment services. Her patients struggle with insecurity, self-doubt, loneliness, obsessive thinking, phobias ADHD, and many other challenges that compromise quality of life.  A licensed clinical psychologist with above average diagnostic and treatment planning skills, she treats cases from mild to severe complexity. Her office offers a place where people can explore themselves and find ways to better cope with their lives. Without any expectations for her patients, Dr. Montesano will work to meet you where you are at in your life and act as a guides towards positive treatment outcomes.


Sarah English, LCPC

Staff Professional Counselor and Supervisor

Sarah English has been at Guada Psych since 2017 treating adolescent and adult patients. She is also one of our clinical supervisors. Sara is an extremely talented mental health provider with a wide range of therapeutic skills that allow her to offer patients a multidisciplinary approach. Sarah works with adolescents and families as well as adults experiencing difficulty maintaining a happy and healthy lifestyle as a result of their mental health. In her own words, "I help individuals and families who have gone through experiences not everyone can understand. I enjoy equipping my patients with targeted skills to help them return to enjoying everyday life. My priority is to build a healthy relationship and rapport that creates a safe and open environment. I build realistic and attainable treatment plans with my patients to bring them relief."


Education and Training

A native of the Chicagoland area, Sarah earned her master’s degree in Counseling from Adler University in Chicago and her BS from Western Illinois University in Macomb, IL. While in training, Sarah ran many women's groups in a drug rehabilitation center for women dealing with severe mental health difficulties. She also worked at a methadone clinic where she offered her clinical skill set to individuals battling opioid dependence.


Areas of Expertise

Sarah has clinical expertise treating teenagers and adults dealing with mild to severe difficulties in the following areas: identity and self-esteem, anxiety, depression, OCD, panic, mild to moderate autism spectrum disorder, substance abuse and alcohol use disorders. She works hard to ensure her office is a place where people can find comfort and growth on their unique journeys through life, whatever stages they may be at. 


Dr. Joe Serrano is a psychologist with over 14 years of varied clinical experiences in community mental health counseling centers, private practices, and inpatient facilities across the Midwest. He is extremely skilled at providing patients a route towards their goals and guiding them along this journey. He works with teens, young and middle-aged adults, and elderly patients.


Strong Educational Background

Dr. Serrano attended Northern Illinois University where he earned his bachelor’s degree in psychology. He then completed his master’s degree in counseling at Indiana’s Ball State University in 2008. In 2012, he began a doctoral program in clinical psychology from Adler University in Chicago and graduated in 2017. During his rigorous studies, Dr. Serrano began building his client-centered approach and style of practicing clinical psychology.


Areas of Expertise

Dr. Serrano has been working with us for many months now, and his patients have been vocal about their positive experiences with him. He treats a range of difficulties, including anxiety, depression, ADHD, trauma related issues, relational troubles, and more.


Fun fact!

Joe enjoys using his depth of knowledge in psychology and comic book characters to help his patients if this can be useful. You can catch Dr. Serrano at Comic Con in Indiana in October (2021) presenting on the following topics: Learning Growth and Healing Through the Use of Comic Books, The Anti-Hero's Journey: The Walk Between Good and Evil, Reading Without Words: The Use of Comic Books as a Tool For Literacy, Falling and Redeemed: Developing Iconic Characters from Trauma, and many more interesting topics! ​


Jennifer Mazzetti, PsyD

Staff Psychologist

Dr. Mazzetti comes to us from the East coast back to sweet home Chicago, and we are super excited to have her join our team. She has been working in mental health since 2004 treating adolescents, adults and families suffering from a range of mental health conditions. Her depth of experience in the clinical setting makes her an invaluable asset to our team. She offers both therapy and assessment services here at Guada Psych and can speak both English and Spanish.


Educational Background and Experiences

Dr. Mazzetti completed her BA at Montclair State University in Montclair, NJ. She then did a MA at Pace University in New York, NY followed by enrolling in a clinical psychology program at the University of Denver. There, she earned her PsyD with a concentration in Health Psychology. Dr. Mazzetti has worked and trained in a range of clinical settings, making her especially skilled at treating the whole person. Some of these settings include Advocate Masonic in Chicago, Harper College in local Palatine, Setan Hall Univeristy, Front Range Psychological Services, Servicios De La Raza, and many more!


​Difficulties Treated

Dr. Mazzetti provides therapy and assessment services at Guada Psych. She works with patients ages 10 and up and treats the following mental health difficulties: mild to severe depression and/or anxiety,  phobias, OCD, bipolar disorders, trauma related disorders (PTSD), mild autism spectrum disorder, grief related difficulties, difficulties related to health diagnosis, personality disorders, parenting difficulties, ADHD, and stress tolerance. She has a very warm approach and works well with patients from a diverse range of backgrounds and experiences.


Gabriela Selwocka, PsyD

Staff Psychologist

Dr. Gabby Selwocka is another welcome addition to our growing team of highly skilled clinical psychologists. She comes to us with experience working in a variety of settings including: community mental health, schools, inpatient, partial hospitalization, intensive outpatient, corrections, and residential. She is excited and ready to incorporate her experience and knowledge from different settings at Guada Psych and will be working with kids, adolescents, young adults and families in therapy. Dr. Selwocka is also involved in our effort to develop a stronger mental health presence in underrepresented communities across Chicagoland.


Education and Training

Dr. Selwocka completed her BA at Dominican University in Riverforest, IL. She then completed a doctoral degree from Adler University located in Chicago, IL. She has trained at some of the most challenging facilities with regards to complex systems presentation, including the Illinois Youth Center, Garfield Park Hospital, Will County Health Department, and NW University’s Cook County Juvenile Detention Center. Her experience working in complex systems combined with her motivation to help those in need make her a great fit for our team.


Unique Approach

According to Dr. Selwocka, “My approach focuses on accepting patients where they are at in their treatment journey while supporting them to make changes that will allow them to be the best version of themselves.” She prioritizes taking an empathic and non-judgmental stance and utilizes a person-centered and relational approach. Dr. Selwocka has advanced skills at utilizing CBT and DBT interventions when necessary as she supports patients working towards lives that are balanced and fulfilling. She is fluent in Polish. Fun fact! Dr. Selwocka is an animal lover, she has two dogs, one cat and an Axolotl (walking fish).


Natasha Knezevic, PsyD

Staff Psychologist

Dr. Natasha Knezevic is a welcome addition to our team and carries with her a very rich background. She currently works with our teenagers and adults in need of therapy or assessment services. In addition to seeing patients at our private practice facility, Dr. Knezevic is also involved in our effort to grow our presence in underserved communities across the Chicagoland area. Her clinical skill set combined with her dedication to serving unrepresented populations and communities make her a great fit for Guada Psych Services.

Education and Training

Dr. Knezevic earned a MA in clinical psychology from The University of Phoenix and a Doctorate in clinical psychology from The Chicago School of Professional Psychology in Chicago, IL. During her many years of education, she trained at Ada S. McKinley Community Services where she provided mental health services to adults, adolescents, and children in Chicago, IL. She also worked for the Wisconsin Dept of Corrections providing individual therapy to male and female offenders, both in correctional facilities and for offsite parolees. Prior to joining our team, Dr. Knezevic worked at Allendale Asssociation, which is a large facility that services youth and their family members in Chicago. There, she provided therapy and worked in the therapeutic day school alongside a teacher.


Areas of Expertise

In addition to her years of training to become a clinical psychologist, Dr. Knezevic has done training in psychoanalytic theory through the Chicago Institute for Psychoanalysis. Furthermore, she is considered around here as a trauma expert having worked as a therapist for survivors of torture seeking asylum in the United States due to political persecution and war conflicts in their home countries. Dr. Knezevic also completed her doctoral dissertation on the intergenerational transmission of trauma. She is fluent in both German and Serbo-Croatian.

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Alexandra Colón, PsyD

Staff Psychologist

Dr. Colón has provided individual therapy services for adults and has worked with diverse populations, in a variety of settings. She has exposure to a range of mental health issues, including helping individuals recover from the trauma they experienced across their lifespan and the use of substances as a means of coping. Dr. Colón leans toward a direct therapeutic style that is guided by relational and cognitive-behavioral frameworks. She strives to use her clinical training in a manner that best serves her clients through an exploration of experiences, thoughts, and behaviors which interfere with wellness and overall functioning.


Educational Background and Experiences

Dr. Colón completed her BA at Argosy University in Chicago, IL. She obtained her Doctorate in Clinical Psychology, with specializations in Traumatic Stress Psychology and Substance Abuse Counseling, at Adler University in Chicago, IL. Dr. Colón has worked with individuals in a variety of settings which includes community mental health clinics, private practice, a substance abuse facility, a state inpatient hospital, a prison work-release program, a residential facility for individuals with severe mental illness, as well as within the educational system conducting assessments.


Area of Expertise and Specialization

Her focus at the practice consists of conducting psychological assessment and is not currently accepting new therapy patients. She specializes in psychological testing across the lifespan (ages 5 years through adulthood) for clarification of attentional difficulties, socio-emotional functioning, and psychoeducational evaluations. Dr. Colón believes it takes a tremendous amount of courage to pursue psychological services and seeks to honor and respect this effort in every encounter. During your work together, her mission is to work as a team to gain diagnostic clarification of your current difficulties through the utilization of data from standardized psychological measures customized to each referral. Her therapeutic style incorporates a warm, direct, and strength-based approach. Dr. Colón strives to incorporate humor, a person’s interests, and mindfulness to assist in feeling safe when emotions are heightened.


Dr. Colón is a proud Latina Chicago native – husky dog mom – advocate for dog rescue adoptions – believer of self-advocacy – enjoys DIY home improvement projects.


Sara Raja has been offering therapy services at Guada Psych for almost two years now, and we are pleased that her training role has transformed into a staff position. According to Sara, her motivation to pursue a career in counseling psychology is related to her natural desire to see people feeling good. Sara can offer services in two languages, both English and Urdu, which we hope can be useful to the Chicagoland community. Sara builds strong and genuine relationships with her patients as she applies her sharp skill set to their difficulties, which brings her great success in the treatment room.


Strong Educational Background

Sara completed her MA in counseling psychology at Northwestern University in Chicago. She completed her undergraduate degree in Psychology at UIC where she worked in their Memory Lab. The goal in the Memory Lab was to better understand the function of memory in humans. ​This experience in the lab was valuable to her understanding of the human brain, as memory plays an integral role in daily mental functioning as well as coping with our emotions. 


Areas of Expertise

Sara has successfully treated many complex cases and can work with patients dealing with a range of mental health conditions, including depression, anxiety, OCD, panic, and trauma. In treatment, she will identify and work towards sustainable life changes that will make you a happier and more stable individual. Sara has an extremely warm demeanor that helps her patients feel comfortable. She can work from a psychodynamic framework and utilizes a multidisciplinary set of interventions. Sara is fluent in both English and Urdu and is happy to work in either language.


Matthew Mooers, MA, LMT

Advanced Doctoral Student Clinician in Training

Matt has been at Guada Psych since December of 2020 and is our advanced student clinician completing his final year in his doctoral training program. He chose a career in clinical psychology in order to help people work through challenges and start living the types of lives they want for themselves. Matt favors learning theory when working with patients, and he emphasizes acceptance and insight building in therapy. His highly thoughtful and considerate approach to the therapeutic process has made him highly successful at Guada Psych. He is under the supervision of Dr. Montesano and Dr. Guada.


Education and Experience

Matt is currently completing his doctorate in clinical psychology at Roosevelt University in Chicago, IL where he also earned his MA. He obtained his BA from the University of Bridgeport in Connecticut. Matt has been trained to work with patients across the lifespan; he currently focuses on working with adults and teenagers. He has a plethora of experience working with people from different cultural backgrounds and is also experienced at working with individuals suffering from chronic pain and substance abuse difficulties.


Creating a Safe Space

Matt’s overarching goal as a therapist is to provide opportunities for patients to feel safe and supported as they more deeply consider who they are and what they want in life. Matt is experienced in working with a range of mood, anxiety, and trauma-related difficulties. He particularly enjoys guiding patients who want to explore their sexual orientations, gender identities, and racial identities as well as helping people navigate career paths, relationships, and personal values. Matt is also running an anxiety therapy group for adults in the fall that focuses on helping people learn to better identify and cope with their anxiety.


Dzejna Mujkic

Doctoral Student Clinician in Training

Dzejna (pronounced "Jayne-a") is a doctoral student who is working to become a clinical psychologist. She currently offers individual and family therapy to adolescent and adult patients. She is under the supervision of Dr. Montesano and Dr. Guada. Dzejna's patients have been vocal regarding how much they have enjoyed and benefited from working with her.


Education and Experience

Dzejna earned her BA in Psychology from DePaul University in Chicago. During her undergraduate studies, she worked on a research project evaluating the psychological impact of violence in urban communities. She was also a research assistant on a team looking into the impact of psychological stress on inflammation in teens. Dzejna is currently enrolled in the PsyD program at Adler Univeristy and has worked in many roles that bolster her current work as a clinical therapist. These roles include her work at Together Chicago where she used social-emotional theories in supporting the mental health of adolescents, teenagers, and their communities. She most recently completed an assessment externship at Mental Health Solutions, PC where she was solely responsible for handling psychological assessments on a range of referral questions.


Interpersonal Approach

Dzejna has a high level of compassion and understanding for people's unique experiences. She is intent on understanding her patients and offering them skills to battle their mental health symptoms. As a result, patients are finding that they not only have better understandings of what their problems are, they are also becoming equipped with tangible skills they can use to cope with their symptoms. Dzejna currently treats adolescents, adults and families struggling with symptoms of depression, anxiety, panic, trauma, substance use, and more difficulties that impair daily functioning.


Sujai Chang

Masters Student Clinician in Training

Sujai (pronounced "Su-Hi") is completing her MA in Counseling with a concentration in trauma. She currently works with our adolescent and adult patients offering individual and family therapy. Sujai wants to become a clinical therapist because of her strong belief in the healing power of therapy when one is faced with the unfortunate circumstances surrounding depression, anxiety, and trauma. She is also motivated by her awareness of the need for a safe and supportive environment where people can work to process their emotions and life events. Sujai is a native speaker of both English and Spanish, she is under the supervision of Dr. Montesano and Matthew Mooers.


Education and Experience

Sujai completed her undergraduate degree (BA) from Northern Illinois University and then enrolled in her graduate degree (MA) program at Adler University in Chicago. Prior to working at Guada Psych Services, Sujai taught parenting skills and worked in-depth with families in need of mental health services. She also ran anger management groups where she taught people how to manage their frustration, especially in difficult situations. Sujai's ability to work in both English and Spanish combined with her professionalism and knowledge of mental health has proven very worthwhile to her patients.


Areas Treated

Sujai currently works with adolescents and adults in the individual and family therapy setting, and she offers services in both English and Spanish. Her patients struggle with thoughts of worthlessness, panic, anxiety, fear, difficulty with focus, family stress, anger/frustration, and many more difficulties that interfere with daily functioning.