Dr. Willaim Allen Decker is a psychologist based in Alexandria, Virginia with 51 years of experience in Psychology. He completed his graduation in 1975. He accepts the Medicare-approved amount. Patients will not be billed for any more than the Medicare deductible and coinsurance. Active license number of Dr. Willaim Allen Decker is 0810002331 for Cognitive & Behavioral Psychology in Virginia. His current practice location is 1423 Powhatan St, Suite 8, Alexandria. Patients can contact him at 703-836-3678 or can fax him at 703-836-2667. Dr. Willaim Allen Decker, PH. D., specializes in Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1033234950.
Dr. Willaim Allen Decker is specialized in psychological testing and evaluating or assessing patient's personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning. Accordingly, he performs counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy. He 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. Willaim Allen Decker'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. Willaim Allen Decker
Specialization Psychology
Credentials PH. D.
Accepts Medicare Assignment Yes
Experience 51+ years
Graduation Year 1975
Gender Male
Practice Address: 1423 Powhatan St, Suite 8 Alexandria, VA - 22314-1389
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.
PAC ID
6204987985
Enrollment ID
I20100202000101
NPI Number1033234950
NPI Enumeration Date: 20 Mar, 2007
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 Dr. Willaim Allen Decker are as mentioned below.
Below are some commonly asked questions about Dr. Willaim Allen Decker:
Dr. Willaim Allen Decker is a psychologist specializing in Cognitive & Behavioral Psychology. He has variety of professional responsibilities, including assessment (identifying, diagnosing, and conceptualizing problems experienced by individuals or groups), intervention (creating, implementing and evaluating interventions designed to induce positive change) and consultation. Cognitive Behavioral Psychologists also participates in research, education, training, and clinical practice including a range of issues and populations.
Dr. Willaim Allen Decker has approximately 51 years of experience in Cognitive & Behavioral Psychology.
Yes, Dr. Willaim Allen Decker accepts Medicare assignment, meaning the provider participates in Medicare and accepts Medicare-approved amounts for eligible services.
Yes, Dr. Willaim Allen Decker 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. Willaim Allen Decker practices at 1423 Powhatan St, Suite 8, Alexandria, Virginia, 22314-1389.
To schedule an appointment with Dr. Willaim Allen Decker, please contact the office at 703-836-3678.
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