Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Leslie Memsic, M.D.

Surgical Oncology Physician in Beverly Hills, CA · enumerated 2006.

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

National Provider Identifier

1821019456

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Registry record

Entity type Individual (Type 1)

Name Leslie Memsic

Credential M.D.

Sex Female

Practice address 436 N Bedford Dr, Ste 105, Beverly Hills, CA, 90210

Phone (310) 278-8200

Fax (310) 278-8230

Enumeration date Jul 21, 2006

Last updated in NPPES Nov 19, 2016

Taxonomy & licenses

2086X0206X Surgical Oncology Physician Allopathic & Osteopathic Physicians · License G496380 (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
00G496380	Medicaid	CA	-

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 Leslie Memsic?

The National Provider Identifier (NPI) for Leslie Memsic is 1821019456, a Type 1 (individual) record in the CMS NPPES registry.

Where does Leslie Memsic practice?

The practice location on file with NPPES is in Beverly Hills, 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 2016-11-19.