OCD Psychiatrists in Maryland

Dr. Tony Tu is a board certified adult psychiatrist who emphasizes patient education and a psychodynamic approach to outpatient psychiatry. His passion for empowering patients with knowledge stems from his academic experience in psychiatry residency training. Dr. Tu's practice focuses on blending medication management together with psychotherapy. He also prioritizes collaboration with your therapist and encourages working together as a team. Dr. Tu is a graduate of the University of Chicago Pritzker School of Medicine where he completed an MD and PhD combined program which helped develop his "doctors as teachers” style of practice. Dr. Tu completed his psychiatry residency training at Loyola University Medical Center in Illinois. Dr. Tu served as an Associate Program Director of Loyola's Psychiatry residency training program for two years, and now maintains an Affiliate Assistant Professor of Psychiatry role with Loyola. He continues to contribute to residency training, as well as mentorship of medical students and psychology externs. Over the years, Dr. Tu has received several awards that demonstrate his affinity for teaching, including the Educator of the Year Award in 2022 from the Loyola Psychiatry Residency Program. Areas of specialization include psychopharmacology, patient-centered medicine, and combination treatment of psychiatry and psychotherapy. Dr. Tu understands that medications are not the end-all-be-all of treatment, but just the beginning. For trauma and acute stress, he understands that the journey starts at the tip of the iceberg, with much to explore as you feel more ready.

Cassandra Thomas-Jingles is a dedicated, board-certified Psychiatric Nurse Practitioner with dual certification as a Family Nurse Practitioner. She is deeply passionate about helping others and takes a holistic, evidence-based approach to mental healthcare, empowering patients to live life to their fullest potential.

Her practice focuses on medication management and supportive therapy, offering 30-minute follow-up sessions. When additional therapy is needed, she recommends including a therapist in the care team to ensure the best possible outcomes. With extensive experience in both outpatient and inpatient settings, Cassandra has worked with adults and children facing a wide range of mental health conditions, including ADHD, anxiety, depression, and psychotic disorders. She strongly believes in prioritizing client involvement and fostering interprofessional collaboration.

Your mental health journey is unique, and Cassandra is here to listen with compassion and without judgment. All conversations are confidential, and her goal is to create a safe, welcoming space where you feel comfortable sharing your thoughts and concerns.

During your initial appointment, Cassandra will review your mental health history, current symptoms, lifestyle factors, and any previous treatments to gain a comprehensive understanding of your needs. Together, you will develop a personalized treatment plan that may include therapy, medication, or other supportive strategies. She values shared decision-making, ensuring your input is considered at every step of the process.

If medication is part of your treatment, Cassandra will clearly explain its benefits, potential side effects, and how your progress will be monitored. Adjustments can be made as needed to achieve the best possible outcome.

Healing takes time, and Cassandra is committed to supporting you throughout the process. Follow-up appointments are essential for tracking progress, making necessary adjustments, and ensuring you receive the care you need.

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Dr. Joshua Riederman is a board-certified psychiatrist with a specialization in the treatment of adults aged 18 to 65. Dr. Riederman obtained his undergraduate degree in brain, cognition, and neuroscience from the University of Michigan in Ann Arbor. He subsequently attended medical school at Nova Southeastern University in Fort Lauderdale, Florida, and completed his residency training at JFK Hospital in Palm Beach, Florida.

Dr. Riederman places a strong emphasis on establishing meaningful relationships with his patients and supporting them in achieving their individual life goals through effective treatment. He actively incorporates patient preferences into all treatment plans and integrates psychotherapy with medication management. Dr. Riederman recognizes the importance of educating patients about their care and dedicates time during each appointment to address any questions or concerns they may have.

In his clinical practice, Dr. Riederman begins by facilitating an open dialogue with patients regarding their primary concerns for the appointment. During initial consultations, he conducts a comprehensive assessment, which includes gathering relevant medical, familial, and social histories that may influence the course of treatment. In subsequent appointments, Dr. Riederman engages patients by inquiring about developments that have occurred since their last visit, as well as any issues related to medications or significant life events.

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Background and credentials

Dr. Puja Kumar is trained in adult, child, and adolescent psychiatry and is a board-certified pediatrician. She earned her Bachelor of Science from the University of Calgary and her medical degree from St. George’s University in Grenada. She completed her pediatrics residency at Maimonides Medical Center in New York and practiced pediatrics with MedStar Shah Medical Group in Maryland before transitioning to psychiatry. She later trained in child and adult psychiatry at University Hospitals Cleveland Medical Center.

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Treatment approach

Dr. Kumar provides medication management combined with supportive therapy, typically in 30-minute follow-up visits. She takes a holistic approach to treatment, considering the impact of lifestyle, parenting practices, and family dynamics on mental health. She emphasizes integrative care, ensuring that treatment plans are tailored to each patient’s unique needs and circumstances.

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What you can expect in a first visit

During the first visit, patients can expect a thorough and compassionate evaluation, where Dr. Kumar takes time to understand their symptoms, medical history, and environmental influences. She prioritizes collaborative decision-making, working closely with patients and, when applicable, their families, to develop a comprehensive and personalized treatment plan. Follow-up visits typically focus on medication adjustments, supportive therapy, and lifestyle recommendations to optimize mental health outcomes.

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Why Talkiatry?

We’re a virtual mental health practice that makes it easy to find great care. We combine quality and convenience to help you thrive—faster. Our providers, like this one, are highly trained experts who specialize in medication management and collaborate with you on a treatment plan that fits your needs and comfort level.

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Daniel Ebert, MD, earned his medical degree from Vanderbilt University School of Medicine and completed his psychiatry residency at Massachusetts General Hospital and McLean Hospital. He has served on the faculty at Harvard Medical School and Johns Hopkins School of Medicine for over 15 years. Board certified in psychiatry by the American College of Psychiatry and Neurology, Dr. Ebert has extensive experience treating mood, anxiety, psychotic, and substance use disorders across inpatient and outpatient settings, including student mental health, community psychiatry, and academic outpatient practices.

Dr. Ebert strives to create a respectful environment where patients feel heard as they build a strong therapeutic alliance. He values long-term collaboration to achieve meaningful treatment goals and improve quality of life. With clinical experience guiding his approach, he offers reasonable therapeutic optimism while addressing challenging symptoms and issues.

Dr. Ebert begins with a comprehensive clinical assessment to understand each patient’s symptoms, life story, behavior, and personality. He develops a collaborative treatment plan, revisiting it over time. Follow-up appointments integrate medication management, if prescribed, and psychotherapy tailored to the individual, using a combination of standard therapeutic approaches aligned with the shared plan.

Dr. Michelle Hornbaker-Park is a board-certified General and Child and Adolescent Psychiatrist with over nine years of experience. Her practice focuses on medication management, which is founded not only on evidence-based medicine but also on the understanding that a trusting therapeutic relationship is the cornerstone of behavioral health healing. She incorporates CBT, supportive therapy, and psychoeducation into her medication management appointments and may refer patients for additional psychotherapy to improve outcomes. Dr. Hornbaker-Park received her Bachelor of Science degree from Ursinus College, with a dual major in Biochemistry/Molecular Biology and Neuroscience. After receiving a Health Professions Scholarship from the Army, she obtained her medical degree from Jefferson Medical College. She went on to enter active duty military service and complete General Psychiatry residency training and Child and Adolescent Psychiatry fellowship training at Tripler Army Medical Center before completing active duty service as a staff psychiatrist and 101st Airborne Division psychiatrist at Fort Campbell, KY. There she cared for active duty service members and their families to manage depression, anxiety, trauma, and the unique stressors of military service. She later transitioned to federal civilian service and served as a preceptor for Phase II Physician Assistant trainees and Army Social Work interns, reinforcing a passion for education that carried her to Walter Reed National Military Medical Center (WRNMMC). During her time at WRNMMC, she served in several roles including Deputy Medical Director of Inpatient Psychiatry, core faculty for the National Capital Consortium Psychiatry Residency Program, Associate Program Director, and associate faculty at the Uniform Services University for Health Sciences (USUHS). Prior to transitioning out of federal service to join Talkiatry, she was repeatedly recognized for excellence in academics and mentorship and received multiple teaching awards. This zeal for education and mentorship, as well as humility, personal growth, and learning, translates directly into her philosophy for patient care. She believes a whole-person approach with open, collaborative teamwork is the key to progress.

Mu Xu, MD is a Psychiatrist at Talkiatry. He obtained his medical doctorate degree from the University of Chicago Pritzker School of Medicine and PhD from New York University. He completed his psychiatry residency at New York University. Dr Xu is licensed to practice in California, New York, New Jersey, Connecticut, Pennsylvania, and Maryland. Dr. Xu provides both medication management for a variety of psychiatric conditions. Dr. Xu is fluent in English and Mandarin. Dr. Xu is a general adult psychiatrist specializing in medication management. He values building strong connections with patients from all walks of life and tailoring treatments to their unique needs. His working style is characterized by attentive listening, detailed follow-up questions, and straightforward communication, fostering a collaborative and empathetic environment.

Abdulhafiz Ahmed, MD

Staff Psychiatrist

Languages

English, Arabic

Conditions treated:

Anxiety, Depression. Bipolar Disorder, OCD, PTSD/Trauma, ADHD

Education and training:

University of Maryland at College Park, BS

Georgetown School of Medicine, MD

University of Maryland Medical System at Baltimore (UMMS), Residency

and fellowship.

Dr. Abdulhafiz Ahmed is a board-certified adult psychiatrist with over 25 years of clinical experience across community hospitals, university teaching hospitals, the Veterans Administration (VA) medical system, and private practice. He has served as the inpatient medical director at MedStar Harbor Hospital in Baltimore and outpatient medical director at the University of Maryland Upper Chesapeake. Dr. Ahmed has extensive expertise diagnosing and treating a wide range of psychiatric conditions including depression, anxiety, bipolar disorder, adjustment disorders, phobias, thought disorders, trauma, and PTSD.

Dr. Ahmed approaches each patient with empathy, attentiveness, and respect, fostering an environment of safety and trust. He recognizes the importance of cultural diversity and is dedicated to understanding each person’s unique background, values, and life circumstances. His patient-centered philosophy ensures that individuals feel heard, validated, and actively involved in their care.

Dr. Ahmed combines evidence-based psychopharmacology with supportive psychotherapy to provide comprehensive and individualized treatment. He collaborates closely with patients to develop a plan that targets their specific symptoms and goals, focusing on improving functioning, resilience, and overall well-being. His approachable and compassionate demeanor helps patients feel comfortable and confident throughout their journey toward recovery.

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Dr. Ramsey is board certified in general and child and adolescent psychiatry. His practice primarily focuses on medication management. He sees himself as a collaborator with therapists and counselors in caring for their shared patients and their families. He received his medical degree from the University of Tennessee Health Science Center in Memphis, TN. He completed his residency at West Virginia University Hospitals and WVU School of Medicine and a fellowship in child and adolescent psychiatry at the Yale Child Study Center, Yale University School of Medicine, and Yale-New Haven Hospital in New Haven and Middletown, CT. He completed his undergraduate studies at the University of Memphis. Dr. Ramsey remained in CT for two additional years, working in the Department of Children and Families, serving the state's at-risk youth and adolescents at a psychiatric residential treatment facility. He then returned to West Virginia University as clinical faculty in its School of Medicine. During the 12-year academic appointment, he had active roles in educating, training, and supervising medical students, general psychiatry residents, child and adolescent psychiatry fellows, and trainees from various disciplines. He worked for many years with adolescent males at both the Dually Diagnosed and Specialized Residential Treatment Centers within West Virginia University Healthcare. He provided outpatient and acute inpatient care, as well as hospital-based consultation services. Within the community, he provided medication evaluation and management services to residential treatment facilities and university student health. He has been seeing patients and collaborating with providers through telemedicine since 2016. While Dr. Ramsey specializes in working with patients with anxiety, he does not prescribe benzodiazepines.‍

Dr. Yaejin Park is a board-certified adult psychiatrist at Talkiatry. She received her medical degree from the University of Illinois at Chicago School of Medicine and completed her psychiatry residency training at Mount Sinai Morningside West.

Dr. Park has professional interests in treating a wide range of psychiatric conditions including depression, anxiety, PTSD, and eating disorders.  She strives to provide compassionate and holistic care with the integration of supportive psychotherapy and medication management.

Dr. Richard Mullin brings over a decade of experience in outpatient psychiatric care, with prior roles providing treatment to juveniles in detention and adults in jail and prison systems across West Virginia. He completed his medical degree at the Joan C. Edwards School of Medicine at Marshall University and trained in psychiatry and child and adolescent psychiatry at West Virginia University. Dr. Mullin emphasizes the importance of truly listening, so patients feel seen and heard.

Dr. Mullin works collaboratively with his patients to identify their main concerns and to build a treatment plan that feels right for them. He believes treatment should be a shared process in which the patient is empowered and supported in their mental health journey.

Taking a "less is more" approach to medication, Dr. Mullin focuses on minimizing prescriptions while still addressing all of a patient’s needs. His goal is to help patients eventually rely more on therapeutic skills than medication. He views treatment as a partnership—balancing his expertise in psychiatry with each patient's lived experience.

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Eudora Jones, PMHNP, is a board-certified psychiatric nurse practitioner. She earned her master’s degree in biotechnology from Johns Hopkins University and her master’s degree in nursing from the University of Maryland. She also completed a nursing practice degree from Chatham University. Eudora has worked in inpatient psychiatry at Walter Reed Army Medical Center and in both inpatient and outpatient psychiatry at Fort Leonard Wood Army Community Hospital. She brings a strong background in research and has served as a biologist, nurse, and nurse practitioner at the National Institutes of Health.

Eudora uses a patient-centered, collaborative approach with a primary focus on medication management combined with supportive therapy. She applies evidence-based treatment strategies and emphasizes psychoeducation and achieving treatment goals through mutually agreed-upon methods. She specializes in treating adults with depression, anxiety, PTSD, and ADHD.

New patients can expect a comprehensive initial interview that includes an assessment of psychiatric history, current symptoms, medication history, and social background. Eudora prioritizes personalized treatment that aligns with each patient’s individual goals in a supportive environment. Follow-up appointments last approximately 30 minutes and include time to adjust or reinforce therapeutic strategies and provide supportive psychotherapy.

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Dr. Tammara Davis is a board-certified adult psychiatrist with over 15 years of experience treating patients across inpatient, outpatient, emergency, and telepsychiatry settings. She earned her medical degree from the University of Tennessee Health Science Center, completed her psychiatry residency at St. Elizabeths Hospital in Washington, DC, and holds a B.S. from Xavier University of Louisiana.

Dr. Davis previously served as a Primary Care–Mental Health Integration psychiatrist at the Veterans Health Administration, where she helped expand access to care in community-based clinics. She is an active member of the Black Psychiatrists of America, where she advances advocacy and equity in mental health care. While she has treated a wide variety of patients from all walks of life, her clinical focus has been on improving access to quality mental healthcare for historically marginalized communities.

Dr. Davis specializes in mood and anxiety disorders, including depression, PTSD, and perinatal mental health. Her approach is holistic, integrative, and patient-centered—grounded in cultural humility and collaborative care. She does not prescribe benzodiazepines, focusing instead on evidence-based strategies that support long-term wellness. While treating a wide variety of patients, Dr. Davis’ clinical focus has been on adults from marginalized and/or minoritized communities.

Dr. Davis begins care with a consultation to ensure a strong fit and shared treatment goals. Dr. Davis is committed to creating a safe, trusting space where patients feel empowered and in control of their healing. She recognizes that not all patients require medication and integrates culturally affirming support when therapy and education are more appropriate.

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Dr. He is board-certified in adult psychiatry and addiction medicine. She is passionate about providing quality and accessible mental health care while considering each patient's concerns, values, and life circumstances. She received her medical doctorate degree from State University of New York (SUNY) Downstate Medical Center, and completed her psychiatry residency at George Washington University Hospital in DC. Prior to medical school, she completed a Master of Public Health from Yale School of Public Health. Dr. He has special clinical interests in providing trauma-informed and culturally competent care in the treatment of mental health conditions. She has experience working with special populations, such as minorities, immigrants, perinatal women, and LGBTQ+ communities. She holds a certificate from Harvard in Global Mental Health: Trauma and Recovery Program. She currently serves on the Board of Directors for a non-profit organization in Washington DC to prepare people recovering from mental illness to improve their quality of life. Although Dr. He's practice primarily focuses on medication management, she looks forward to getting to know you and incorporating her experiences with insight-oriented therapy in 20 or 30 minute follow-up visits.

Sonya R. Isler, PMHNP-BC, began her nursing journey over 30 years ago in a state psychiatric hospital in Goldsboro, NC, inspired by the poised nurse she admired at church as a child. Her path includes roles as LPN, RN, BSN, and multiple advanced practice degrees. Sonya has worked in inpatient and outpatient settings, VA clinics, and private practices. She also serves as a preceptor for PMHNP students at her alma mater, the University of North Carolina at Chapel Hill.

Sonya creates a welcoming, respectful space where patients feel safe to communicate openly. She practices active listening and values patient input when setting therapy goals. Her approach is holistic—treating the whole person—and she encourages collaboration, helping patients feel seen, heard, and empowered in their care.

Sonya reviews a patient's history before each session and begins with clear introductions and goal setting. She invites open discussion of concerns and tailors' treatment plans with patient input. She often incorporates CBT, motivational interviewing, and solution-focused therapy into care, promoting growth through supportive, personalized strategies.

Avi Adri is a board-certified psychiatric nurse practitioner with a passion for helping others achieve their goals through medication management and psychotherapy. He is trained in cognitive behavioral therapy, psychodynamic therapy, and supportive therapy. Avi has experience supporting individuals with depression, anxiety, OCD, bipolar disorder, PTSD, and ADHD. He is an LGBTQIA+ affirming provider who believes in empowering individuals in their lives.

He earned his Master of Science in Nursing with a specialty in psychiatry from Stony Brook University and a nursing practice degree from Chatham University. Avi is committed to providing evidence-based, compassionate treatment for mental health conditions to enhance quality of life. His previous experience includes two years at Columbia University Medical Center on an inpatient psychiatric unit and four years on the medical consultation-liaison psychiatric team, where he treated patients with a range of acute and chronic medical conditions while providing medication management and psychotherapy. His work at Columbia involved treating a wide spectrum of psychiatric conditions with the goal of achieving symptom remission.

Additionally, Avi has practiced at a private clinic in New York City, focusing on interventional techniques such as TMS and ketamine therapy, alongside medication management and psychotherapy.

Through mindful techniques and compassionate care, Avi is dedicated to the well-being of his clients. He views each person as more than a diagnosis and approaches care through a client-centered, holistic lens.

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