Psychologist | Clinical Psychology

Dr. Dennis J. O'hara, PH.D., ABPP

675 Exton Cmns, Exton, Pennsylvania, 19341-2446

About Dr. Dennis J. O'hara

Dr. Dennis J. O'hara is a psychologist based in Exton, Pennsylvania who is specialized in Clinical Psychology. Active license number of Dr. Dennis J. O'hara is PS003734L for Clinical Psychology in Pennsylvania. His current practice location is 675 Exton Cmns, Exton. Patients can contact him at 610-269-3037 or can fax him at 610-280-3373. Dr. Dennis J. O'hara, PH.D., ABPP, specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1952420481.

Dr. Dennis J. O'hara 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). His main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that he can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Practice Information

Dr. Dennis J. O'hara'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. Dennis J. O'hara
Specialization Clinical Psychology
Credentials PH.D., ABPP
Gender Male
Practice Address: 675 Exton Cmns,
Exton, PA - 19341-2446
Fax 610-280-3373

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 Number1952420481
NPI Enumeration Date: 28 Mar, 2007
NPI Last Update On: 08 May, 2024

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. Dennis J. O'hara are as mentioned below.

License NumberSpecializationStateStatus
PS003734LClinical Psychology PennsylvaniaPrimary

Mailing Address

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

Dr. Dennis J. O'hara
675 Exton Cmns,
Exton, PA - 19341-2446
Phone: 610-269-3037
Fax: 610-280-3373

Book an Appointment with Dr. Dennis J. O'hara

To schedule an appointment, contact Dr. Dennis J. O'hara at 675 Exton Cmns, Exton, Pennsylvania or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Dennis J. O'hara:

Dr. Dennis J. O'hara is a psychologist specializing in Clinical Psychology. He 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). His main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that he can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Yes, Dr. Dennis J. O'hara 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. Dennis J. O'hara practices at 675 Exton Cmns, Exton, Pennsylvania, 19341-2446.

To schedule an appointment with Dr. Dennis J. O'hara, please contact the office at 610-269-3037.

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