Veronica McKnight, LCSW

Dr. David Guggenheim is an experienced clinical psychologist and health care administrator. He has worked with patients at different stages of life, including children, adolescents, and adults, and he has treated patients living with a wide range of mental health conditions, including anxiety, depression, post-traumatic stress disorder (PTSD), substance use, and attention-deficit hyperactivity disorder. Dr. Guggenheim has specific training in Trauma-Focused Cognitive Behavioral Therapy, Motivational Interviewing, and foundational training in dialectical behavioral therapy. Prior to joining Talkiatry, Dr. Guggenheim served as the Chief Behavioral Health Officer at Callen-Lorde Community Health Center in New York City, specializing in LGBTQ+ health care. In that role, he oversaw teams of providers including psychiatrists, psychologists, and social workers, who collectively provided care to thousands of patients in the New York metropolitan area. While at Callen-Lorde, he also served as co-chair for the behavioral health subcommittee of the Community Health Center Association of New York State; worked as an Adjunct Professor at Post University; and performed volunteer clinical work at the Weill Cornell Center for Human Rights. Before joining Callen-Lorde, Dr. Guggenheim worked as Associate Chief Behavioral Health Officer at Community Health Center, Inc., a federally qualified health center in Connecticut. A recognized expert, Dr. Guggenheim has delivered lectures to audiences ranging from medical schools to corporate executives, and he has been quoted in national media including The Advocate, Yahoo Finance, and Teen Vogue. Dr. Guggenheim has also been honored with an Early Career Achievement Award from the American Psychological Association in 2016. Dr. Guggenheim received his Bachelor of Arts from the University of Connecticut in 2002 and his Doctor of Psychology in Clinical Psychology from the American School of Professional Psychology at Argosy University/Washington, DC in 2009.

Lisa Mazzotti is a Licensed Professional Counselor in Colorado, and a Licensed Mental Health Counselor and Certified Addiction Professional in Florida. She earned her bachelor’s in Psychology and a master’s in Human Development Counseling from the University of Illinois. With more than 30 years of clinical experience, she has worked with adolescents, adults, and older adults in individual, couple, family, and group settings. Lisa also served as an adjunct professor, teaching psychology and sociology courses for over a decade in high schools, colleges, and correctional facilities. Her extensive background includes treating addictions, trauma, mood and anxiety disorders, OCD, ADHD, self-harm, and eating disorders.

Lisa meets each person where they are, creating a safe space where clients feel heard, valued, and respected. She emphasizes open communication, collaboration, and mutual trust, encouraging patients to share what feels most comfortable and meaningful to them. Lisa’s goal is to empower clients to identify and pursue their personal goals at their own pace, fostering lasting growth. She brings compassion, positivity, experience, and humor to her sessions, reminding patients that change begins with understanding and acceptance.

Lisa tailors her approach by exploring each patient’s history, strengths, and priorities to create an individualized treatment plan. Drawing on Acceptance and Commitment Therapy (ACT), Cognitive Behavioral Therapy (CBT), Dialectical Behavior Therapy (DBT), Rational Emotive Behavior Therapy (REBT), Mindfulness, Motivational Interviewing, and Solution-Focused Therapy, she adapts her methods to meet each client’s needs. Lisa has facilitated Intensive Outpatient (IOP), Partial Hospitalization (PHP), and inpatient group therapy for co-occurring disorders. She supports clients with a broad range of concerns, including anxiety, depression, PTSD, grief, self-harm, abuse, and both physical and psychological addictions.

Ashley Sharp is a Licensed Professional Counselor with Mental Health Service Provider
designation, who has experience working in multiple settings within the mental health
field including private practice counseling, school-based counseling, and in a behavioral
health hospital. This has allowed Ashley to work closely with individuals of various
demographics and a wide spectrum of mental health conditions. Ashley obtained her
undergraduate degree in psychology from Bryan College in Dayton, TN, and graduate
degree in clinical mental health counseling from Richmont Graduate University in
Chattanooga, TN.

Ashley has been working in the mental health field for 4 years and
focuses on mood and anxiety disorders, as well as personality disorders,
challenges in relationship dynamics, and difficult life transitions such as grief and
divorce. Ashley tailors her treatment modalities for the greatest benefit of the individual,
being considerate of the background and needs of each client.
Ashley uses an eclectic approach to therapy founded in Cognitive Behavioral Therapy
and incorporates elements of Dialectical Behavior Therapy such as mindfulness,
distress tolerance, and emotional regulation.

Diamond Junior received her bachelor’s degree in arts & psychology 2007 & two master’s degrees in science, one in Community Mental Health Counseling and the second one in School Counseling Education, in 2011 and 2018. Diamond Junior now has her License in Mental Health Counseling, her Credentialed Alcoholic & Substance Abuse Counseling Certification-Trainee, and her Permanent Certification in School Counseling. Diamond is also currently in doctoral school for her School Psychology degree. Diamond is a former Alcohol and Substance Abuse Preventive Worker & Treatment and Therapeutic Foster Care Family Specialist. Diamond is now currently, an on-line therapist and has her own Mental Health Counseling Private Practice in Buffalo. Diamond's treatment styles & modalities include Trauma-Informed Therapy, Cognitive-Behavioral Therapy, and Grief Therapy.

When working with Diamond, a new patient should know that she is very down to earth and professionally direct. Diamond practices individualism and treat each patient as their own person. Diamond develops treatment plans with the patient, that tailors to each of their individual needs. Diamond is also the co-founder of an All-girls mentoring & educational program called, "Unique Sisters. Unique Sister was started in 2014 and is owned by my mother, Rhodesia Jackson.

Diamond's typical process when working with patients is to first establish a therapeutic rapport by asking open-ended questions. Diamond asks questions such as, "Have you been in therapy before, including as a  child or teen (if the patient is over 18)"? This helps Diamond starting point to build a trusting & individualized relationship with the patient. Diamond's next question would be, "Why did you first enter therapy & we're you diagnosed with any mental health disorders"? Diamond continues to go on and ask if the client is or has been on psychotropic medications and what brings them back to therapy. Diamond gathers all of this information during the first two session and then ask the patient if any skills were built during their therapy journey & if they still utilize the skills. Finally, Diamond would administer the ACE Questionnaire to assess for childhood trauma, if the patient is over 18 years of age.

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Tikita Ficklin, LPC, has over 10 years of experience practicing in outpatient and inpatient settings, utilizing modalities such as CBT and Solution-Focused Therapy. She earned a Bachelor of Science in Social Sciences/Human Services and a Master of Science in Clinical Mental Health Counseling, both from Mercer University, and is completing a Doctorate in Marriage & Family Therapy from North Central University, expected in 2026.

Tikita values open and honest communication and partners with clients to set clear treatment goals that support their personal growth. She creates a warm, supportive environment where clients feel heard, respected, and empowered to reach their full potential.

Tikita begins by thoroughly understanding each client’s history, concerns, and goals during the initial session to foster a trusting relationship. She then develops individualized treatment plans that align with clients’ objectives, guiding them toward their best possible self.

Corinne Motto is a Licensed Professional Counselor, who has experience with a variety of populations in the mental health field. Corinne attended undergraduate school at the University of Pittsburgh, and her Master's of Arts at Seton Hill University, both in Greensburg, Pennsylvania.Corinne has been practicing for more than fifteen years as an outpatient therapist in a variety of settings. Her focus has been on but not limited to depression, anxiety, domestic violence, and other mental health conditions. Corinne uses a client-centered approach and tailors her sessions towards the client's needs. She uses a foundation of cognitive behavioral and dialectical behavioral therapy. She believes that self-care is an important part of the therapy process.