Psychologist | Clinical Psychology

Dr. Kaitlin Marie O'brien, PH.D.

940 S Coast Dr Ste 225, Costa Mesa, California, 92626-7757

About Dr. Kaitlin Marie O'brien

Dr. Kaitlin Marie O'brien is a psychologist based in Costa Mesa, California who is specialized in Clinical Psychology. Active license number of Dr. Kaitlin Marie O'brien is PSY35098 for Clinical Psychology in California. Her current practice location is 940 S Coast Dr Ste 225, Costa Mesa. Patients can contact her at 949-743-1457. Dr. Kaitlin Marie O'brien, PH.D., specializes in Clinical Psychology and her NPI number (Unique professional ID assigned by NPPES) is 1194468439.

Dr. Kaitlin Marie O'brien 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. Kaitlin Marie O'brien'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. Kaitlin Marie O'brien
Specialization Clinical Psychology
Credentials PH.D.
Gender Female
Practice Address: 940 S Coast Dr Ste 225,
Costa Mesa, CA - 92626-7757

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 Number1194468439
NPI Enumeration Date: 14 Apr, 2022
NPI Last Update On: 13 Aug, 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. Kaitlin Marie O'brien are as mentioned below.

License NumberSpecializationStateStatus
PSY35098Clinical 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. Kaitlin Marie O'brien
125 Olympic,
Granite Bay, CA - 95746-6766
Phone: 562-293-5938

Book an Appointment with Dr. Kaitlin Marie O'brien

To schedule an appointment, contact Dr. Kaitlin Marie O'brien at 940 S Coast Dr Ste 225, Costa Mesa, California or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Kaitlin Marie O'brien:

Dr. Kaitlin Marie O'brien 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. Kaitlin Marie O'brien 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. Kaitlin Marie O'brien practices at 940 S Coast Dr Ste 225, Costa Mesa, California, 92626-7757.

To schedule an appointment with Dr. Kaitlin Marie O'brien, please contact the office at 949-743-1457.

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