Psychologist | General Psychology

William Marsh

300 W Clarendon Ave Ste 470, Phoenix, Arizona, 85013-3475

About William Marsh

William Marsh is a psychologist based in Phoenix, Arizona who is specialized in General Psychology. Active license number of William Marsh is 4759 for General Psychology in Arizona. His current practice location is 300 W Clarendon Ave Ste 470, Phoenix. Patients can contact him at 602-730-4450. William Marsh NPI number (Unique professional ID assigned by NPPES) is 1447756234.

William Marsh 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

William Marsh'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 William Marsh
Specialization General Psychology
Gender Male
Practice Address: 300 W Clarendon Ave Ste 470,
Phoenix, AZ - 85013-3475

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 Number1447756234
NPI Enumeration Date: 02 Apr, 2018
NPI Last Update On: 02 Apr, 2018

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 William Marsh are as mentioned below.

License NumberSpecializationStateStatus
4759General Psychology ArizonaPrimary

Mailing Address

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

William Marsh
300 W Clarendon Ave Ste 470,
Phoenix, AZ - 85013-3475
Phone: 602-730-4450

Book an Appointment with William Marsh

To schedule an appointment, contact William Marsh at 300 W Clarendon Ave Ste 470, Phoenix, Arizona or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about William Marsh:

William Marsh is a psychologist specializing in General Psychology. He 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.

Yes, William Marsh 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.

William Marsh practices at 300 W Clarendon Ave Ste 470, Phoenix, Arizona, 85013-3475.

To schedule an appointment with William Marsh, please contact the office at 602-730-4450.

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