Psychologist | Clinical Psychology

Dr. Marissa Sia, PSYD, MA

459 Patterson Rd, Honolulu, Hawaii, 96819-1522

About Dr. Marissa Sia

Dr. Marissa Sia is a psychologist based in Honolulu, Hawaii who is specialized in Clinical Psychology. Active license number of Dr. Marissa Sia is PSY-2221 for Clinical Psychology in Hawaii. Her current practice location is 459 Patterson Rd, Honolulu. Patients can contact her at 808-433-0600. Dr. Marissa Sia, PSYD, MA, specializes in Clinical Psychology and her NPI number (Unique professional ID assigned by NPPES) is 1770273617.

Dr. Marissa Sia 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.

Practice Information

Dr. Marissa Sia'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. Marissa Sia
Specialization Clinical Psychology
Credentials PSYD, MA
Gender Female
Practice Address: 459 Patterson Rd,
Honolulu, HI - 96819-1522

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 Number1770273617
NPI Enumeration Date: 12 May, 2023
NPI Last Update On: 13 Dec, 2024

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. Marissa Sia are as mentioned below.

License NumberSpecializationStateStatus
PSY-2221Clinical Psychology HawaiiPrimary
PSY.0006363Clinical Psychology ColoradoSecondary

Mailing Address

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

Dr. Marissa Sia
459 Patterson Rd,
Honolulu, HI - 96819-1522
Phone: 808-433-0600

Book an Appointment with Dr. Marissa Sia

To schedule an appointment, contact Dr. Marissa Sia at 459 Patterson Rd, Honolulu, Hawaii or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Marissa Sia:

Dr. Marissa Sia 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, Dr. Marissa Sia 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. Marissa Sia practices at 459 Patterson Rd, Honolulu, Hawaii, 96819-1522.

To schedule an appointment with Dr. Marissa Sia, please contact the office at 808-433-0600.

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