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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

WILLIAM J KOENIG MD
NPI 1457390908
Emergency Medicine in Long Beach, CA

Active since June 06, 2006
2801 ATLANTIC AVE, LONG BEACH, CA 90806(562) 933-2000(818) 587-2493 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About William J Koenig Md NPPES

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

WILLIAM J KOENIG MD (NPI 1457390908) is an individual emergency medicine provider in Long Beach, California, licensed in California (G27652) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1457390908
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameWILLIAM J KOENIGCredential: MD
Location Address2801 ATLANTIC AVELong Beach, CA 90806-1737
Mailing AddressPo Box 1490Long Beach, CA 90801-1490 · (888) 237-1803 · Fax (818) 587-2493
Phone(562) 933-2000
Fax(818) 587-2493
Sole ProprietorNo
Enumeration DateJune 6, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1457390908 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in CA · G27652
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
2801 ATLANTIC AVE, Long Beach, CA 90806
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Other Identifiers 2

Other00G276520CA · Blue Shield
Medicaid00G276520CA

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. DAVID C KIM M.D.
Pediatrics (Neonatal-Perinatal Medicine)
2801 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 933-8100
MRS. ELISHA MARIE MARTIN MSN, NP
Nurse Practitioner (Acute Care)
2801 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (310) 350-8902
MICHAEL A RAYA MD
Internal Medicine
2801 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 426-3333
GISELLE ABUYUAN GARINGAN PA
Physician Assistant
2801 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 933-2000
ELIZABETH MARY ZAAROUR
Physician Assistant
2801 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 249-4575
LONG BEACH MEMORIAL MEDICAL
Pharmacy (Community/Retail Pharmacy)
2801 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 933-0330
GLENN LEVINE M.D.
Pediatrics (Pediatric Critical Care Medicine)
2801 ATLANTIC AVE, 3RD FLOOR
LONG BEACH, CA 90806
Los Angeles County (562) 933-8743
DAVID KHOA CAO DO
Internal Medicine
2801 ATLANTIC AVE
LONG BEACH, CA 90806
Los Angeles County (562) 426-3333

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 William Koenig's NPI number?

The NPI number for William Koenig is 1457390908. It was assigned to this individual provider in the NPPES registry on June 6, 2006.

Where is William Koenig located?

William Koenig practices at 2801 Atlantic Ave, Long Beach, CA 90806. The listed phone number is (562) 933-2000.

What is William Koenig's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

When was this NPI record last updated?

The NPPES record for William Koenig was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 38 days 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.