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DR. DAVID HORWITZ M.D.
NPI 1457389918
Internal Medicine - Rheumatology in Los Angeles, CA

Active since June 30, 2006
1520 SAN PABLO ST, SUITE 1000, LOS ANGELES, CA 90033(626) 457-5839 Get Directions Write a Review

NPPES record last updated: April 14, 2008. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. David Horwitz M.d. NPPES

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

DR. DAVID HORWITZ M.D. (NPI 1457389918) is an individual rheumatology provider in Los Angeles, California, licensed in California (G43389) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1457389918
Entity TypeIndividualMale
Primary Taxonomy207RR0500X
Provider Legal NameDR. DAVID HORWITZCredential: M.D.
Location Address1520 SAN PABLO ST, SUITE 1000Los Angeles, CA 90033-5310
Mailing AddressPo Box 31218Los Angeles, CA 90031-0218 · (626) 457-5839
Phone(626) 457-5839
Sole ProprietorNo
Enumeration DateJune 30, 2006
Last NPPES UpdateApril 14, 2008
✔ NPI 1457389918 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
License✔ Licensed in CA · G43389
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
1520 SAN PABLO ST, Los Angeles, CA 90033
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Other Identifiers 10

Medicare UPINF09026CA
Medicaid00G433890CA
OtherW11675CA · Group Medicare Pin
OtherCE1617CA · Group Railroad Medicare
OtherZZZ50018ZCA · Group Blue Shield
Medicare PINWG43389ACA
Other00G433890CA · Blue Shield
Other06E2774CA · Group Champus
OtherGR0016910CA · Group Medicaid Pin
Other1356390009CA · Group Npi

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.

DR. CAROLINE HWANG M.D.
Internal Medicine (Gastroenterology)
1520 SAN PABLO ST, SUITE 1000
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5100
GISELLE MARIA PETZINGER M.D.
Psychiatry & Neurology (Neurology)
1520 SAN PABLO ST, SUITE 3000
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5710
LIGAYA CASTILLO
Nurse Practitioner
1520 SAN PABLO ST, SUITE 1000
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5100
ERICA ZOE SHOEMAKER MD
Psychiatry & Neurology (Psychiatry)
1520 SAN PABLO ST, STE 1652
LOS ANGELES, CA 90033
Los Angeles County (323) 442-6000
DR. MICHELE TORTORA PATO M.D.
Psychiatry & Neurology (Psychiatry)
1520 SAN PABLO ST, STE1652
LOS ANGELES, CA 90033
Los Angeles County (323) 442-6000
DR. EDY E SOFFER M.D.
Internal Medicine (Gastroenterology)
1520 SAN PABLO ST, SUITE 1000
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5100
DR. TRACY DEBRA LAWRENCE M.D.
Internal Medicine (Cardiovascular Disease)
1520 SAN PABLO ST, SUITE 1000
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5100
CAROLYN L. KALOOSTIAN MD
Family Medicine (Geriatric Medicine)
1520 SAN PABLO ST, 1ST FLOOR
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5900

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 David Horwitz's NPI number?

The NPI number for David Horwitz is 1457389918. It was assigned to this individual provider in the NPPES registry on June 30, 2006.

Where is David Horwitz located?

David Horwitz practices at 1520 San Pablo St Suite 1000, Los Angeles, CA 90033. The listed phone number is (626) 457-5839.

What is David Horwitz's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

When was this NPI record last updated?

The NPPES record for David Horwitz was last updated on April 14, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.