Psychologist | Clinical Psychology

Dr. Heather Lyle Cassidy, PSYD

8700 Georgia Ave Ste 305, Silver Spring, Maryland, 20910-3605

About Dr. Heather Lyle Cassidy

Dr. Heather Lyle Cassidy is a psychologist based in Silver Spring, Maryland who is specialized in Clinical Psychology. Active license number of Dr. Heather Lyle Cassidy is 04180 for Clinical Psychology in Maryland. Her current practice location is 8700 Georgia Ave Ste 305, Silver Spring. Patients can contact her at 202-251-5197. Dr. Heather Lyle Cassidy, PSYD, specializes in Clinical Psychology and her NPI number (Unique professional ID assigned by NPPES) is 1427098961.

Dr. Heather Lyle Cassidy is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). Her main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that she can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Practice Information

Dr. Heather Lyle Cassidy's specialty, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name Dr. Heather Lyle Cassidy
Specialization Clinical Psychology
Credentials PSYD
Gender Female
Practice Address: 8700 Georgia Ave Ste 305,
Silver Spring, MD - 20910-3605

Professional Identification Codes

NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to healthcare providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.

NPI Number1427098961
NPI Enumeration Date: 06 Jun, 2006
NPI Last Update On: 30 Dec, 2022

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialties in the same state or different states. Related medical licenses for Dr. Heather Lyle Cassidy are as mentioned below.

License NumberSpecializationStateStatus
04180Clinical Psychology MarylandPrimary
PSY1000359Clinical Psychology District Of ColumbiaSecondary

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

Dr. Heather Lyle Cassidy
1800 Belvedere Blvd,
Silver Spring, MD - 20902-4004
Phone: 202-251-5197

Book an Appointment with Dr. Heather Lyle Cassidy

To schedule an appointment, contact Dr. Heather Lyle Cassidy at 8700 Georgia Ave Ste 305, Silver Spring, Maryland or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Heather Lyle Cassidy:

Dr. Heather Lyle Cassidy is a psychologist specializing in Clinical Psychology. She is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). Her main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that she can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Yes, Dr. Heather Lyle Cassidy is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.
*Availability may change. Please contact the office directly to ask about appointments.

Dr. Heather Lyle Cassidy practices at 8700 Georgia Ave Ste 305, Silver Spring, Maryland, 20910-3605.

To schedule an appointment with Dr. Heather Lyle Cassidy, please contact the office at 202-251-5197.

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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 September, 2026.