Psychologist

Margaret Mary Slaven, PSY.D.

1400 N Harbor Blvd, Suite 440, Fullerton, California, 92835-4126

About Margaret Mary Slaven

Margaret Mary Slaven is a psychologist based in Fullerton, California who is specialized in Psychology. Active license number of Margaret Mary Slaven is PSY19346 for Clinical Psychology in California. Her current practice location is 1400 N Harbor Blvd, Suite 440, Fullerton. Patients can contact her at 714-681-9070 or can fax her at 714-773-4788. Margaret Mary Slaven, PSY.D., specializes in Psychology and her NPI number (Unique professional ID assigned by NPPES) is 1477628923.

Margaret Mary Slaven 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

Margaret Mary Slaven'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 Margaret Mary Slaven
Specialization Psychology
Credentials PSY.D.
Gender Female
Practice Address: 1400 N Harbor Blvd, Suite 440
Fullerton, CA - 92835-4126
Fax 714-773-4788

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 Number1477628923
NPI Enumeration Date: 21 Nov, 2006
NPI Last Update On: 11 Sep, 2025

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 Margaret Mary Slaven are as mentioned below.

License NumberSpecializationStateStatus
PSY19346Clinical Psychology CaliforniaPrimary
PSY19346Clinical Neuropsychologist CaliforniaSecondary
PSY19346Rehabilitation Psychology CaliforniaSecondary

Mailing Address

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

Margaret Mary Slaven
1400 N Harbor Blvd, Suite 440
Fullerton, CA - 92835-4126
Phone: 714-681-9070
Fax: 714-773-4788

Book an Appointment with Margaret Mary Slaven

To schedule an appointment, contact Margaret Mary Slaven at 1400 N Harbor Blvd, Suite 440, Fullerton, California or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Margaret Mary Slaven:

Margaret Mary Slaven 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, Margaret Mary Slaven 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.

Margaret Mary Slaven practices at 1400 N Harbor Blvd, Suite 440, Fullerton, California, 92835-4126.

To schedule an appointment with Margaret Mary Slaven, please contact the office at 714-681-9070.

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