Psychologist | Clinical Psychology

Dr. John Frederick Grienenberger, PH.D.

11340 W Olympic Blvd, Suite 245, Los Angeles, California, 90064-1608

About Dr. John Frederick Grienenberger

Dr. John Frederick Grienenberger is a psychologist based in Los Angeles, California who is specialized in Clinical Psychology. Active license number of Dr. John Frederick Grienenberger is PSY 23880 for Clinical Psychology in California. His current practice location is 11340 W Olympic Blvd, Suite 245, Los Angeles. Patients can contact him at 310-477-6008. Dr. John Frederick Grienenberger, PH.D., specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1275835936.

Dr. John Frederick Grienenberger 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). His main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that he can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Practice Information

Dr. John Frederick Grienenberger'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. John Frederick Grienenberger
Specialization Clinical Psychology
Credentials PH.D.
Gender Male
Practice Address: 11340 W Olympic Blvd, Suite 245
Los Angeles, CA - 90064-1608

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 Number1275835936
NPI Enumeration Date: 30 Nov, 2010
NPI Last Update On: 30 Nov, 2010

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. John Frederick Grienenberger are as mentioned below.

License NumberSpecializationStateStatus
PSY 23880Clinical 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. John Frederick Grienenberger
11340 W Olympic Blvd, Suite 245
Los Angeles, CA - 90064-1608
Phone: 310-477-6008

Book an Appointment with Dr. John Frederick Grienenberger

To schedule an appointment, contact Dr. John Frederick Grienenberger at 11340 W Olympic Blvd, Suite 245, Los Angeles, California or call the phone number listed below.

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Frequently Asked Questions

Below are some commonly asked questions about Dr. John Frederick Grienenberger:

Dr. John Frederick Grienenberger is a psychologist specializing in Clinical Psychology. He 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). His main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that he can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Yes, Dr. John Frederick Grienenberger 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. John Frederick Grienenberger practices at 11340 W Olympic Blvd, Suite 245, Los Angeles, California, 90064-1608.

To schedule an appointment with Dr. John Frederick Grienenberger, please contact the office at 310-477-6008.

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