Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Catherine Sassoon, M.D.

Critical Care Medicine (Internal Medicine) Physician in Long Beach, CA · enumerated 2006.

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

National Provider Identifier

1881700516

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Registry record

Entity type Individual (Type 1)

Name Catherine Sassoon

Credential M.D.

Sex Female

Practice address 5901 E 7th St, Long Beach, CA, 90822

Phone (562) 826-5831

Fax (562) 826-5832

Enumeration date Aug 23, 2006

Last updated in NPPES Feb 22, 2008

Taxonomy & licenses

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License A29820 (CA) Secondary

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License A29820 (CA) Primary

207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License A29820 (CA) Secondary

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

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Catherine Sassoon?

The National Provider Identifier (NPI) for Catherine Sassoon is 1881700516, a Type 1 (individual) record in the CMS NPPES registry.

Where does Catherine Sassoon practice?

The practice location on file with NPPES is in Long Beach, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-02-22.