Psychologist | Clinical Psychology

Dr. Mary Ann Koenig, PSY.D.

47 Marchwood Rd, Exton, Pennsylvania, 19341-1835

About Dr. Mary Ann Koenig

Dr. Mary Ann Koenig is a psychologist based in Exton, Pennsylvania who is specialized in Clinical Psychology. Active license number of Dr. Mary Ann Koenig is PS-006930-L for Clinical Psychology in Pennsylvania. Her current practice location is 47 Marchwood Rd, Exton. Patients can contact her at 610-524-9060 or can fax her at 610-524-1211. Dr. Mary Ann Koenig, PSY.D., specializes in Clinical Psychology and her NPI number (Unique professional ID assigned by NPPES) is 1598971525.

Dr. Mary Ann Koenig 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. Mary Ann Koenig'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. Mary Ann Koenig
Specialization Clinical Psychology
Credentials PSY.D.
Gender Female
Practice Address: 47 Marchwood Rd,
Exton, PA - 19341-1835
Fax 610-524-1211

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 Number1598971525
NPI Enumeration Date: 15 May, 2007
NPI Last Update On: 08 Jul, 2007

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. Mary Ann Koenig are as mentioned below.

License NumberSpecializationStateStatus
PS-006930-LClinical 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. Mary Ann Koenig
47 Marchwood Rd,
Exton, PA - 19341-1835
Phone: 610-524-9060
Fax: 610-524-1211

Book an Appointment with Dr. Mary Ann Koenig

To schedule an appointment, contact Dr. Mary Ann Koenig at 47 Marchwood Rd, Exton, Pennsylvania or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Mary Ann Koenig:

Dr. Mary Ann Koenig 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. Mary Ann Koenig 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. Mary Ann Koenig practices at 47 Marchwood Rd, Exton, Pennsylvania, 19341-1835.

To schedule an appointment with Dr. Mary Ann Koenig, please contact the office at 610-524-9060.

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