The Team Behind Your Care
These are the people who will show up for you — appointment after appointment, through the hard days and the breakthroughs. Our team of psychiatrists, physician assistants, therapists, and support staff each brought their own path to this work, but they share one thing: a genuine belief that every person who walks through our doors deserves to feel better. We’d like you to get to know them.
Dr. Trish Phuong Dinh, MD
Founder & Medical Director
Child, Adolescent & Adult Psychiatrist
Autism
Eating Disorders
OCD
ADHD
Addiction
Treatment-Resistant Depression
Dr. Trish Phuong Dinh is a psychiatrist with specialized fellowship training in Child and Adolescent Psychiatry. Having called the Tampa Bay area home since 1991 and lived throughout Pasco, Pinellas, and Hillsborough counties, she is passionate about improving access to compassionate, evidence-based mental health care for children, adolescents, adults, and families throughout the community.
Learn More about Dr. Dinh
Dr. Dinh earned her Bachelor of Science in Biomedical Sciences with a minor in Biomedical Physics from the University of South Florida, graduating Magna Cum Laude with a perfect 4.0 GPA and receiving the King O’Neal Scholar Award for the highest GPA in her graduating college class. She went on to earn her medical degree from the University of South Florida Morsani College of Medicine, where she was actively involved in psychiatric and neuroscience research and received awards for Clinical Excellence in Neuropsychiatry and Outstanding Student in Psychiatry.
Following medical school, Dr. Dinh completed her General Psychiatry residency training at the University of South Florida before pursuing advanced subspecialty training through the Child and Adolescent Psychiatry Fellowship Program at the University of Louisville. During fellowship, she served as Chief Fellow during her second year of training and was selected to participate in the Fellow Leadership Council, where she served as a liaison between her fellow trainees and the Office of Medical Education. In recognition of her dedication to improving the fellowship experience and providing exemplary leadership, she received the Fellow Leadership Council Certificate of Excellence for the 2025–2026 academic year.
Throughout her training, Dr. Dinh demonstrated a commitment to academic excellence, scholarship, and lifelong learning. She received the Chair’s Achievement Award in recognition of her research contributions and earned the highest score on the Child and Adolescent Psychiatry Resident-In-Training Examination (CHILD PRITE) for two consecutive years.
As the Founder and Medical Director of Beacon Psychiatry, Dr. Dinh is dedicated to providing personalized, evidence-based psychiatric care that recognizes each patient’s unique strengths, challenges, and goals. She believes that mental health conditions deserve the same attention, understanding, and treatment as physical illnesses. Her approach emphasizes collaboration, education, and shared decision-making so that patients and families feel informed, empowered, and actively involved in their care. She strives to meet patients where they are in their journey, recognizing that meaningful progress looks different for every individual. Rather than applying a one-size-fits-all approach, she works collaboratively with patients and families to develop realistic, achievable treatment plans that align with their values, circumstances, and goals.
Dr. Dinh has particular clinical interests in attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder (ASD), obsessive-compulsive disorder (OCD), anxiety disorders, depression, trauma-related disorders, eating disorders, and treatment-resistant psychiatric conditions. She is especially passionate about helping children, adolescents, and young adults navigate developmental, academic, social, and emotional challenges while supporting families throughout the treatment process. She also enjoys caring for adults and values building long-term therapeutic relationships that evolve alongside her patients’ changing needs and life circumstances.
Patients often describe Dr. Dinh as warm, approachable, and easy to talk to. She is known for taking the time to listen carefully, explain diagnoses and treatment options in a clear and understandable manner, and develop thoughtful treatment plans that respect each patient’s values, culture, and individual circumstances. She believes that successful treatment begins with understanding each person’s unique story and meeting them where they are, whether they are seeking help for the first time or have been navigating mental health challenges for many years.
Through both personal experience and years of clinical practice, Dr. Dinh understands the profound impact mental health challenges can have on individuals and families. She has witnessed how effective psychiatric treatment can transform lives, restore hope, strengthen relationships, and improve overall quality of life. Her goal is to help every patient build resilience, gain confidence in their ability to manage life’s challenges, and achieve meaningful and lasting progress.
When you seek care with Dr. Dinh, you can expect a physician who combines academic excellence with genuine compassion, treating every patient with the same dignity, respect, and care she would want for her own family members.
Courtney Barnes-Harrington, PA-C
Physician Assistant
LGBTQ+ Affirming
Disordered Eating
Adults & Teens
Born and raised in Tampa, Courtney Barnes-Harrington completed her Bachelor’s degree in Anthropology from the University of South Florida. She went on to earn her Master’s degree in Physician Assistant studies from South University Tampa, where she was elected to serve as Co-Vice President of her class. Knowledgeable, kind, and a great listener, Courtney enjoys working with a diverse group of patients. As a Physician Assistant at Beacon Psychiatry, she offers appointments for adults, teenagers, and adolescents.
Learn More about Courtney
Courtney is especially passionate about providing care for members of the LGBTQ+ community, people of color, and individuals with disordered eating behaviors. During her career, she has witnessed huge gaps in services for members of these communities. She has also encountered patients who have spent years seeking care without finding a provider who legitimizes their concerns and sees them as they see themselves. She knows it can be incredibly beneficial for these patients to finally find a provider who reflects them and is sensitive to their experiences.
One of Courtney’s greatest skills is her ability to connect and communicate with patients from all different cultural backgrounds. She has a deep desire to truly understand others, and she is exceptional at authentically relating to her patients. She also has a nuanced understanding of how culture can impact the way people think about their mental health and make choices in their lives. She wants her patients to know that regardless of who they are, where they come from, or what they are going through, it is okay. She is here to help them feel better!
Courtney also values sharing knowledge with her patients. She believes that telling someone the “why” behind a recommendation builds trust and influences whether or not that person chooses to follow her guidance. “Why” is also a question Courtney often asks when she is trying to get to the root of why a patient feels the way they do or why they are using certain coping mechanisms. By gaining a deeper understanding of each person’s unique history and decision-making process, she is able to provide more personalized treatment.
Courtney offers effective and compassionate care, along with a dose of realism and a warm sense of humor. Her patients often express their appreciation for how easy it feels to talk with her about the challenges they are facing in their lives. She wants each and every person to feel safe and comfortable when they come into her office, so she puts attention into creating a welcoming space. She treats her patients as equals, never talks down to them, and always strives to genuinely relate to them, and resolve their concerns. She loves seeing her patients start smiling and laughing more as they improve.
In her free time, Courtney enjoys attending concerts and music festivals. She can sometimes be seen heading out on a camping trip, volunteering with groups like Equality Florida, or walking in Pride. She loves reading and watching movies, and she considers herself a “nerd” when it comes to Marvel comics, Dune, and Lord of the Rings. She lives in Tampa with her wife and three cats.
Alyssa Siegworth, PA-C
Physician Assistant
Women's Health
Perinatal Psychiatry
Senior Mental Health
Alyssa Siegworth earned her bachelor’s degree in Biological Sciences with a minor in Chemistry, graduating summa cum laude from the University of Pittsburgh. She went on to earn her master’s degree in Physician Assistant studies from South University Tampa, graduating with high honors. After completing her training, Alyssa was inducted into the national honor society for Physician Assistants, Pi Alpha, in recognition of her academic excellence and community service.
Learn More about Alyssa
Before joining the team at Beacon Psychiatry, Alyssa supported patients who were at risk of self-harm or experiencing suicidal thoughts. Her experiences solidified her belief in the transformative power of genuine human connection and the importance of individualized care. She brings that approach to her work with all of her patients, especially those who feel like they have previously been overlooked and unheard. Her patients often express appreciation for her empathetic listening skills, unwavering attention, personalized guidance, and consistency of care.
Alyssa enjoys treating individuals from all walks of life, with a particular focus on women’s health and the senior community. In her prior work at skilled nursing and assisted living facilities, she noticed that seniors’ mental health needs are often overlooked. She dedicates her time to listening to their experiences, understanding their symptoms, and empathizing with their challenges. Alyssa also frequently provides care for expectant mothers, new mothers, individuals planning to conceive, and women experiencing menopause or menopausal changes. She is committed to supporting both of these populations and is currently pursuing additional certifications in geriatric and perinatal psychiatry.
When meeting a new patient, Alyssa takes the time to listen and learn about them before developing a treatment plan. She asks questions about their family and medical history, stressors, support systems, goals, and lifestyle to gain a deeper understanding of each person’s unique situation. She believes it is essential to treat the whole person, rather than isolated symptoms. During treatment, she may prescribe medications, utilize various therapeutic techniques, order lab work to check for nutritional deficiencies, refer patients to additional providers to round out their care team, and make a variety of recommendations for lifestyle changes to support mental wellness.
Above all, Alyssa wants her patients to always feel understood and supported. She meets each person without judgment and with an open mind. She loves getting to know her patients well, and she finds immense satisfaction in seeing their mental health improve over time. She strives to make a positive impact in each person’s life by always providing high quality care that is deeply rooted in compassion.
In her free time, Alyssa enjoys spending time with her husband and their two children. She loves traveling, exploring new places, trying new restaurants, and checking out local events. She’s happiest outdoors—whether relaxing by the pool or beach, or jumping into a friendly game of ping pong, tennis, or other activities. She enjoys being on the go but also appreciates simple moments spent with the ones she loves.
Thirslon Williams, LMHC
Licensed Mental Health Counselor
OCD & Exposure Therapy
PTSD & Trauma
Couples & Families
Thirslon Williams is a Licensed Mental Health Counselor specializing in cognitive behavioral therapy and solution-focused therapy. She offers in-person and virtual therapy sessions for adults, teenagers, couples, and families. Thirslon completed her Bachelor of Science degree in Social Work at the University of South Florida. She went on to attend Nova Southeastern University, earning her Master of Science degree in Clinical Mental Health Counseling.
Learn More about Thirslon
Born and raised in Tampa Bay, Thirslon has provided counseling and case management at local hospitals, businesses, and nonprofits. As a behavioral therapist for a psychiatric treatment center, she diagnosed and treated patients struggling with a wide range of mental health issues. As a case manager, she served as an advocate, helping clients obtain medical care, social support, housing, and educational resources. She has also worked extensively with seniors, connecting them with mental health services and supporting their goals of living independently for as long as possible.
Thirslon’s experience enables her to quickly assess patients, understand the root cause of their problems, and offer realistic and tangible solutions. She begins by asking questions and listening. Then she works closely with her patients to identify specific strategies they can use to break cycles of unhealthy behavior and create positive changes in their lives. As they move forward with implementing those strategies, Thirslon is there every step of the way to offer empathy, direction, and support.
Trained in a variety of therapeutic modalities, Thirslon chooses the one that best meets the needs of each patient’s unique situation. She frequently uses Cognitive Behavioral Therapy, Solution-Focused Therapy, Visualization, Motivational Interviewing, and Person-Centered Therapy. She has completed intensive training in Exposure and Ritual Prevention Therapy, designed to help patients with OCD reduce their anxiety and gain control over their impulses. Her skill with Prolonged Exposure Therapy helps patients with PTSD work through painful memories in a safe and supportive environment.
Thirslon is passionate about breaking down the social and cultural barriers that sometimes prevent people from asking for help. She believes therapy can benefit people from all walks of life, and making the choice to talk openly about a problem is the first step toward solving it. She wants to reassure anyone considering therapy for the first time that there is no need to feel shame or fear retaliation. If you are struggling, you don’t have to do it alone. You can talk with someone who will support you, help you navigate your fear or grief, and help you problem-solve. Her office is a safe space for people to talk openly about their problems and find real solutions to live healthier and happier lives.
Valerie Verzi
Practice Administrator
Our Practice Administrator, Valerie (Val) Verzi, comes to us with a Bachelor’s degree in Business Administration & a minor in Healthcare Administration and over two decades of business management and development experience in the medical field. Valerie’s business achievements are a small reflection of her talents and attributes. It was her relationships with patients and the positive impact she had in their lives that is most memorable and noteworthy. She believes that a warm smile, comforting hug, and a gentle touch of the hand still goes a long way when it comes to healthcare. This humbling compassion and empathy continues in her interactions with patients here at our practice.
Guillermo (Moe) Chavez
Patient Coordinator
Guillermo (Moe) Chavez is the Patient Coordinator at Beacon Psychiatry. Friendly and professional, he is always ready to offer guidance, answer questions, and ease concerns. He is the voice patients hear on the phone when they call the office and the face they see first when they walk in the door. He helps patients get checked in for appointments, fill out paperwork, navigate the office, and schedule follow-up visits.
Learn More about Guillermo
Moe moved to the Tampa Bay area 24 years ago. Soon after arriving, he began his career in healthcare. During his 20+ years as a Patient Coordinator, Moe has worked for medical practices with specialties ranging from primary care to pain management to dermatology. His experience has taught him to be reliable, yet adaptable. He sees each person as an individual deserving of empathy and respect, and he is adept at guiding patients and their families through the process of accessing care.
Moe strongly supports Beacon Psychiatry’s mission to serve and care for a diverse patient population. Born in Nicaragua and raised in Miami, Moe enjoys sharing his Latin culture with others. He is also a proud member of the LGBTQ+ community and can relate to many of the stigmas and obstacles LGBTQ+ patients may experience. He wants anyone who seeks help at Beacon Psychiatry to know they will be accepted as they are.
With a desire to make everyone feel welcome and comfortable, Moe can often be spotted greeting patients with a friendly smile, offering a compliment to brighten their day, or pointing out the bean bag chairs to Beacon Psychiatry’s youngest visitors. Returning patients are sometimes surprised to find that Moe remembers to ask how they enjoyed the restaurant or concert they mentioned they were planning to attend at their last appointment. His goal is to build positive relationships through warm interactions, making visits both easy and enjoyable.
Lordieza “Lordie” Aguelo
Administrative Assistant
Lordieza (Lordie) Aguelo is an Administrative Assistant at Beacon Psychiatry. While much of her work occurs behind the scenes, Lordie plays a vital role in supporting our practitioners and therapists, allowing them to focus more of their attention on patient care. Her efficiency and attention to detail keep the office running smoothly, and her sunny disposition puts a smile on the face of staff and patients alike.
Learn More about Lordieza
Born and raised in the Philippines, Lordie earned her Bachelor of Science degree in Pharmacy from the University of Perpetual Help System DALTA. After graduation, she worked as a pharmacist for several years before starting her own pharmaceutical distribution company. Running a business taught her to always remain adaptable, persevere through a challenge, set daily goals, and develop strong interpersonal skills.
At Beacon Psychiatry, Lordie assists with a variety of tasks that streamline daily operations and enable our providers to make timely and informed decisions for our patients. She prepares chart notes detailing each patient’s history, concerns, needs, diagnosis, and treatment plan. She verifies prescription details, tracks lab results, and coordinates requests with other healthcare providers. She diligently organizes the information she gathers and ensures patient records are always accurate and complete.
Ready to lend a helping hand, Lordie also steps in as needed to assist with scheduling appointments, answering questions, and relaying messages between providers and patients. In her view, no concern is too small to receive a compassionate and attentive response. She wants others to always feel seen and heard, and she offers each patient the same respect, understanding, and care that she would offer a friend or family member.
What Makes Our Culture Different
The Moments That Led Us Here
Most of us didn’t end up in mental health care by accident. We came to this work because somewhere along the way — through our own lives, our families, or the patients who changed us — we learned how much it matters to be truly seen by someone who cares. That shared understanding is what brought this particular group of people together, and it’s what keeps us here.
Care That Comes Together
At Beacon, we don’t just work alongside each other — we actively collaborate. Psychiatrists, physician assistants, and therapists consult, share insights, and think together about the best path forward for each patient. That kind of integrated teamwork is rarer than it should be in mental health care, and we’re proud to have built it here.
The Practice We Always Believed In
We check in on each other. We challenge each other to grow. And we hold ourselves to a standard that goes beyond clinical competence — because we believe the quality of care a patient receives is inseparable from the culture of the team providing it. When our team feels supported, our patients feel it too.
This is the kind of practice we each wished existed when we were looking. So we built it.