DR. MARK LEONARD KATZ M.D. NPI 1558478941

NPI Information

  • NPI: 1558478941
  • Provider Name: DR. MARK LEONARD KATZ, M.D.
  • Classification: Psychiatry & Neurology - 2084P0802X
  • Specialization: Addiction Psychiatry
  • Entity Type: Individual
  • Address: 5901 E 7TH ST
    MAILCODE #006/116A - MENTAL HEALTH CG
    LONG BEACH, CA
    ZIP 90822
  • Phone: (562) 826-8000

Map and Directions

Get Directions

NPI Details

DR. Mark Leonard Katz, M.D. is an addiction psychiatry psychiatry neurology in Long Beach, CA. The provider is addiction Psychiatry is a subspecialty of psychiatry that focuses on evaluation and treatment of individuals with alcohol, drug, or other substance-related disorders, and of individuals with dual diagnosis of substance-related and other psychiatric disorders. DR. Mark Leonard Katz, M.D. NPI is 1558478941. The provider is registered as an individual entity type.

The NPPES NPI record indicates the provider is a male.

The provider's business location address is:

5901 E 7TH ST
MAILCODE #006/116A - MENTAL HEALTH CG
LONG BEACH, CA
ZIP 90822-201
Phone: (562) 826-8000
Fax: (562) 826-5431

The enumeration date for this NPI number is 8/23/2006 and was last updated on 7/8/2007.

Taxonomy Codes

The NPI record includes the healthcare provider taxonomy classification, state license number and state of licensure. The following information regarding the scope of practice of this provider is available:

No. Taxonomy Code Taxonomy Clasification Taxonomy Specialization License Number License State Primary
12084P0802XPsychiatry & NeurologyAddiction PsychiatryG 62277CALIFORNIAYes

What is NPI?

NPI stands for National Provider Identifier. The NPI is a 10-digit identification number that is completely unique. The NPI number by itself does not contain any identifiable information such as a provider’s speciality or location. The NPI is assigned to individuals or organizacions for their lifespan and it is independent of key provider information type updates like a change of practices, location or speciality.

This page was last updated on: 11/21/2025

NPI Synchronization or Removal

All materials and services on this site are provided on an "as is" and "as available" basis without warranty of any kind. The NPI record is maintained by the National Plan & Provider Enumeration System (NPPES) and anyone may request this information and other NPPES health care provider data from HHS under The Freedom of Information Act (FOIA), Title 5 of the United States Code, section 552. To update the NPI records please contact the NPPES.

Previous NPI
Next NPI