Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Timothy F. Lesser, MD

Urology Physician in Torrance, CA · enumerated 2007.

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

National Provider Identifier

1053436550

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Registry record

Entity type Individual (Type 1)

Name Timothy F. Lesser

Credential MD

Sex Male

Practice address 20911 Earl St, Suite 140, Torrance, CA, 90503

Phone (323) 783-4011

Fax (310) 542-4652

Enumeration date Mar 21, 2007

Last updated in NPPES Apr 4, 2023

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License A90955 (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
P00647441	Other	CA	MEDICARE GROUP PTAN

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 Timothy Lesser's NPI record?

Cross-check NPI 1053436550 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1053436550 active?

Yes, as of the latest NPPES snapshot, NPI 1053436550 is active (record last updated 2023-04-04).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-04-04.