Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ivar Mac Szper, MD

Neurological Surgery Physician in Long Beach, CA · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1457305658

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Registry record

Entity type Individual (Type 1)

Name Ivar Mac Szper

Credential MD

Sex Male

Practice address 2888 Long Beach Blvd, Suite 240, Long Beach, CA, 90806

Phone (562) 595-7696

Fax (562) 490-3846

Enumeration date May 20, 2006

Last updated in NPPES Apr 19, 2011

Taxonomy & licenses

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License G39971 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
00G399710	Medicaid	CA	-
WG39971A	Other	CA	PPIN
W19727	Other	CA	GROUP ID

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify Ivar Szper's NPI record?

Cross-check NPI 1457305658 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1457305658 active?

Yes, as of the latest NPPES snapshot, NPI 1457305658 is active (record last updated 2011-04-19).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-04-19.