Psychologist | General Psychology

Dr. Diana Harder Terrell, PH.D.

3608 Lancaster Pike, Wilmington, Delaware, 19805-1509

About Dr. Diana Harder Terrell

Dr. Diana Harder Terrell is a psychologist based in Wilmington, Delaware who is specialized in General Psychology. Active license number of Dr. Diana Harder Terrell is B1-0000141 for General Psychology in Delaware. Her current practice location is 3608 Lancaster Pike, Wilmington. Patients can contact her at 302-995-9600 or can fax her at 302-995-9671. Dr. Diana Harder Terrell, PH.D., specializes in General Psychology and her NPI number (Unique professional ID assigned by NPPES) is 1932430030.

Dr. Diana Harder Terrell is specialized in psychological testing and evaluating or assessing patient's personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning. Accordingly, she performs counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy. She can diagnose and treat mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability by psycheducational evaluation, therapy, remediation, and consultation.

Practice Information

Dr. Diana Harder Terrell'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. Diana Harder Terrell
Specialization General Psychology
Credentials PH.D.
Gender Female
Practice Address: 3608 Lancaster Pike,
Wilmington, DE - 19805-1509
Fax 302-995-9671

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 Number1932430030
NPI Enumeration Date: 29 Jan, 2010
NPI Last Update On: 29 Jan, 2010

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. Diana Harder Terrell are as mentioned below.

License NumberSpecializationStateStatus
B1-0000141General Psychology DelawarePrimary

Mailing Address

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

Dr. Diana Harder Terrell
3608 Lancaster Pike,
Wilmington, DE - 19805-1509
Phone: 302-995-9600
Fax: 302-995-9671

Book an Appointment with Dr. Diana Harder Terrell

To schedule an appointment, contact Dr. Diana Harder Terrell at 3608 Lancaster Pike, Wilmington, Delaware or call the phone number listed below.

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Frequently Asked Questions

Below are some commonly asked questions about Dr. Diana Harder Terrell:

Dr. Diana Harder Terrell is a psychologist specializing in General Psychology. She is specialized in psychological testing and evaluating or assessing patient's personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning. Accordingly, she performs counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy. She can diagnose and treat mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability by psycheducational evaluation, therapy, remediation, and consultation.

Yes, Dr. Diana Harder Terrell 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. Diana Harder Terrell practices at 3608 Lancaster Pike, Wilmington, Delaware, 19805-1509.

To schedule an appointment with Dr. Diana Harder Terrell, please contact the office at 302-995-9600.

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