Psychologist | Counseling Psychology

Dr. Gretchen Mathieu, PH.D.

3900 City Line Ave, Suite 1207, Philadelphia, Pennsylvania, 19131-2908

About Dr. Gretchen Mathieu

Dr. Gretchen Mathieu is a psychologist based in Philadelphia, Pennsylvania who is specialized in Counseling Psychology. Her current practice location is 3900 City Line Ave, Suite 1207, Philadelphia. Patients can contact her at 215-878-3052. Dr. Gretchen Mathieu, PH.D., specializes in Counseling Psychology and her NPI number (Unique professional ID assigned by NPPES) is 1982836508.

Dr. Gretchen Mathieu help people with physical, emotional and mental health issues, improve their sense of well‐being, alleviate feelings of distress and resolve crises. She also provides assessment, diagnosis, and treatment of more severe psychological symptoms.
Counseling psychologists mainly focuses on: Healthy aspects and strengths of clients (whether being seen as individuals, couples, families, groups or organizations; Environmental/situational influences (how cultural, gender and lifestyle issues shape people’s experiences and concerns); Issues of diversity and social justice (e.g., advocacy); The role of career and work in peoples’ lives.

Practice Information

Dr. Gretchen Mathieu'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. Gretchen Mathieu
Specialization Counseling Psychology
Credentials PH.D.
Gender Female
Practice Address: 3900 City Line Ave, Suite 1207
Philadelphia, PA - 19131-2908

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 Number1982836508
NPI Enumeration Date: 15 Aug, 2009
NPI Last Update On: 20 Aug, 2009

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. Gretchen Mathieu are as mentioned below.

License NumberSpecializationStateStatus
Counseling Psychology Primary
84-019960School Psychology PennsylvaniaSecondary

Mailing Address

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

Dr. Gretchen Mathieu
3900 City Line Ave, Suite 1207
Philadelphia, PA - 19131-2908
Phone: 215-878-3052

Book an Appointment with Dr. Gretchen Mathieu

To schedule an appointment, contact Dr. Gretchen Mathieu at 3900 City Line Ave, Suite 1207, Philadelphia, Pennsylvania or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Gretchen Mathieu:

Dr. Gretchen Mathieu is a psychologist specializing in Counseling Psychology. She help people with physical, emotional and mental health issues, improve their sense of well‐being, alleviate feelings of distress and resolve crises. She also provides assessment, diagnosis, and treatment of more severe psychological symptoms.
Counseling psychologists mainly focuses on: Healthy aspects and strengths of clients (whether being seen as individuals, couples, families, groups or organizations; Environmental/situational influences (how cultural, gender and lifestyle issues shape people’s experiences and concerns); Issues of diversity and social justice (e.g., advocacy); The role of career and work in peoples’ lives.

Yes, Dr. Gretchen Mathieu 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. Gretchen Mathieu practices at 3900 City Line Ave, Suite 1207, Philadelphia, Pennsylvania, 19131-2908.

To schedule an appointment with Dr. Gretchen Mathieu, please contact the office at 215-878-3052.

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