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DR. MARK LEONARD KATZ M.D.
NPI 1558478941
Psychiatry & Neurology - Addiction Psychiatry in Long Beach, CA

Active since August 23, 2006
5901 E 7TH ST, MAILCODE #006/116A - MENTAL HEALTH CG, LONG BEACH, CA 90822(562) 826-8000(562) 826-5431 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Mark Leonard Katz M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARK LEONARD KATZ M.D. (NPI 1558478941) is an individual addiction psychiatry provider in Long Beach, California, licensed in California (G 62277) and active in the NPI registry since August 2006.

NPPES Registry Identity

NPI1558478941
Entity TypeIndividualMale
Primary Taxonomy2084P0802X
Provider Legal NameDR. MARK LEONARD KATZCredential: M.D.
Location Address5901 E 7TH ST, MAILCODE #006/116A - MENTAL HEALTH CGLong Beach, CA 90822-5201
Mailing Address5901 E 7th St, Mailcode #006/116a - Mental Health CgLong Beach, CA 90822-5201 · (562) 826-8000 · Fax (562) 826-5431
Phone(562) 826-8000
Fax(562) 826-5431
Sole ProprietorNo
Enumeration DateAugust 23, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1558478941 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · Addiction PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0802X
License✔ Licensed in CA · G 62277
Definition
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.
5901 E 7TH ST, Long Beach, CA 90822
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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SOHRAB TANAVOLI D.O
Internal Medicine
5901 E 7TH ST
LONG BEACH, CA 90822
Los Angeles County (562) 826-8000
PARGOL KHORSANDI NAZARIAN PHARMD
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
5901 E 7TH ST
LONG BEACH, CA 90822
Los Angeles County (562) 826-8000
DR. GREYSON NAKANO
Optometrist
5901 E 7TH ST
LONG BEACH, CA 90822
Los Angeles County (562) 826-8000
JOEL ANDRES MONTES
Social Worker
5901 E 7TH ST
LONG BEACH, CA 90822
Los Angeles County (562) 391-8311
LOREMEA BAUTISTA
Registered Nurse (Psychiatric/Mental Health)
5901 E 7TH ST
LONG BEACH, CA 90822
Los Angeles County (562) 826-8000
MR. JAMES LYNN WATSON
Social Worker (Clinical)
5901 E 7TH ST
LONG BEACH, CA 90822
Los Angeles County (562) 826-8000
MICHAELA SANGER
Speech-Language Pathologist
5901 E 7TH ST
LONG BEACH, CA 90822
Los Angeles County (562) 826-8000
LONG BEACH VAMC
General Acute Care Hospital
5901 E 7TH ST
LONG BEACH, CA 90822
Los Angeles County (702) 341-3152

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Katz's NPI number?

The NPI number for Mark Katz is 1558478941. It was assigned to this individual provider in the NPPES registry on August 23, 2006.

Where is Mark Katz located?

Mark Katz practices at 5901 E 7th St Mailcode #006/116a - Mental Health Cg, Long Beach, CA 90822. The listed phone number is (562) 826-8000.

What is Mark Katz's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Addiction Psychiatry, with taxonomy code 2084P0802X.

When was this NPI record last updated?

The NPPES record for Mark Katz was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.