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California Cancer Specialists Medical Group

Clinical Medical Laboratory in Pasadena, CA · enumerated 2007 · authorized official Lawrence Weiss, President.

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

National Provider Identifier

1417087933

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Registry record

Entity type Organization (Type 2)
Legal business name California Cancer Specialists Medical Group
Other name <Unavail>
Parent organization City of Hope Medical Group
Practice address 50 Bellefontaine, Suite 104, Pasadena, CA, 91105
Phone (626) 396-2900
Enumeration date Mar 6, 2007
Last updated in NPPES Sep 27, 2007

Taxonomy & classification

291U00000X Clinical Medical Laboratory Laboratories Primary

Authorized official

Name Lawrence Weiss
Title President
Phone (626) 359-8111

Other identifiers

Identifier Type State Issuer
GR0087670 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.

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Frequently asked questions

Who is the authorized official for California Cancer Specialists Medical Group?
NPPES lists Lawrence Weiss (President) as the authorized official for this organization.
What is the NPI number for California Cancer Specialists Medical Group?
The NPI for California Cancer Specialists Medical Group is 1417087933, a Type 2 (organization) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-09-27.