Psychologist | Clinical Psychology | 28+ years experience

Dr. Mark Joseph Sergi, PH.D.

9535 Reseda Blvd Ste 112, Northridge, California, 91324-6022

About Dr. Mark Joseph Sergi

Dr. Mark Joseph Sergi is a psychologist based in Northridge, California with 28 years of experience in Clinical Psychology. He completed his graduation in 1998. He may accept the Medicare-approved amount. Patients may be billed for more than the Medicare deductible and coinsurance. Active license number of Dr. Mark Joseph Sergi is 16519 for Clinical Psychology in California. His current practice location is 9535 Reseda Blvd Ste 112, Northridge. Patients can contact him at 818-239-2654 or can fax him at 818-450-0636. Dr. Mark Joseph Sergi, PH.D., specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1750483467.

Dr. Mark Joseph Sergi 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. Mark Joseph Sergi'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. Mark Joseph Sergi
Specialization Clinical Psychology
Credentials PH.D.
Accepts Medicare Assignment May Accept
Gender Male
Practice Address: 9535 Reseda Blvd Ste 112,
Northridge, CA - 91324-6022
Fax 818-450-0636

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.

PAC ID 1052489986
Enrollment ID I20081006000387
NPI Number1750483467
NPI Enumeration Date: 02 Sep, 2006
NPI Last Update On: 30 May, 2020

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. Mark Joseph Sergi are as mentioned below.

License NumberSpecializationStateStatus
16519Clinical Psychology CaliforniaPrimary
PSY16519Clinical Psychology CaliforniaSecondary

Mailing Address

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

Dr. Mark Joseph Sergi
9535 Reseda Blvd Ste 112,
Northridge, CA - 91324-6022
Phone: 818-239-2654
Fax: 818-450-0636

Book an Appointment with Dr. Mark Joseph Sergi

To schedule an appointment, contact Dr. Mark Joseph Sergi at 9535 Reseda Blvd Ste 112, Northridge, California or call the phone number listed below.

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Frequently Asked Questions

Below are some commonly asked questions about Dr. Mark Joseph Sergi:

Dr. Mark Joseph Sergi 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.

Dr. Mark Joseph Sergi has approximately 28 years of experience in Clinical Psychology.

Dr. Mark Joseph Sergi may accept Medicare assignment. Please contact the provider's office directly to verify Medicare participation and coverage details.

Yes, Dr. Mark Joseph Sergi 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. Mark Joseph Sergi practices at 9535 Reseda Blvd Ste 112, Northridge, California, 91324-6022.

To schedule an appointment with Dr. Mark Joseph Sergi, please contact the office at 818-239-2654.

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