Psychologist | General Psychology

Dr. Themis Yiaslas, PSY.D.

10535 Hospital Way, Bldg 649, Mather, California, 95655-4200

About Dr. Themis Yiaslas

Dr. Themis Yiaslas is a psychologist based in Mather, California who is specialized in General Psychology. Active license number of Dr. Themis Yiaslas is 25305 for General Psychology in California. His current practice location is 10535 Hospital Way, Bldg 649, Mather. Patients can contact him at 916-366-5420. Dr. Themis Yiaslas, PSY.D., specializes in General Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1144573171.

Dr. Themis Yiaslas 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. Themis Yiaslas'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. Themis Yiaslas
Specialization General Psychology
Credentials PSY.D.
Gender Male
Practice Address: 10535 Hospital Way, Bldg 649
Mather, CA - 95655-4200

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 Number1144573171
NPI Enumeration Date: 15 Oct, 2012
NPI Last Update On: 15 Oct, 2012

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. Themis Yiaslas are as mentioned below.

License NumberSpecializationStateStatus
25305General Psychology CaliforniaPrimary

Mailing Address

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

Dr. Themis Yiaslas
10535 Hospital Way, Bldg 649
Mather, CA - 95655-4200

Book an Appointment with Dr. Themis Yiaslas

To schedule an appointment, contact Dr. Themis Yiaslas at 10535 Hospital Way, Bldg 649, Mather, California or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Themis Yiaslas:

Dr. Themis Yiaslas 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, Dr. Themis Yiaslas 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. Themis Yiaslas practices at 10535 Hospital Way, Bldg 649, Mather, California, 95655-4200.

To schedule an appointment with Dr. Themis Yiaslas, please contact the office at 916-366-5420.

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