Psychiatrist

Dr. John Hollenberg, MD

7621 Canoga Ave, Canoga Park, California, 91304-4912

About Dr. John Hollenberg

Dr. John Hollenberg is a psychiatrist based in Canoga Park, California who is specialized in Psychiatry. Active license number of Dr. John Hollenberg is G00051020 for Psychiatry in California. His current practice location is 7621 Canoga Ave, Canoga Park. Patients can contact him at 818-598-6900. Dr. John Hollenberg, MD, specializes in Psychiatry and his NPI number (Unique professional ID assigned by NPPES) is 1083799225.

Dr. John Hollenberg specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

Practice Information

Dr. John Hollenberg'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 Hollenberg
Specialization Psychiatry
Credentials MD
Gender Male
Practice Address: 7621 Canoga Ave,
Canoga Park, CA - 91304-4912

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 Number1083799225
NPI Enumeration Date: 26 Oct, 2006
NPI Last Update On: 14 Jan, 2014

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 Hollenberg are as mentioned below.

License NumberSpecializationStateStatus
G00051020Psychiatry 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 Hollenberg
7621 Canoga Ave,
Canoga Park, CA - 91304-4912
Phone: 818-598-6900

Book an Appointment with Dr. John Hollenberg

To schedule an appointment, contact Dr. John Hollenberg at 7621 Canoga Ave, Canoga Park, California or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. John Hollenberg:

Dr. John Hollenberg is a psychiatrist specializing in Psychiatry. He specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

Yes, Dr. John Hollenberg 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 Hollenberg practices at 7621 Canoga Ave, Canoga Park, California, 91304-4912.

To schedule an appointment with Dr. John Hollenberg, please contact the office at 818-598-6900.

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