Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

California Em-I Medical Services, A Medical Corporation

Emergency Medicine Physician in Lake Isabella, CA · enumerated 2006 · authorized official Mark Slepin, Director/Officer.

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

National Provider Identifier

1053360156

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Registry record

Entity type Organization (Type 2)

Legal business name California Em-I Medical Services, A Medical Corporation

Practice address 6412 Laurel Ave, Mountain Mesa, Lake Isabella, CA, 93240

Phone (469) 401-2386

Enumeration date May 8, 2006

Last updated in NPPES Aug 31, 2017

Taxonomy & classification

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Mark Slepin

Title Director/Officer

Phone (469) 401-2386

Other identifiers

Identifier	Type	State	Issuer
GR008390F	Medicaid	CA	-
ZZZ64264Z	Other	CA	BLUE SHIELD OF CALIFORNIA

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 California Em-I Medical Services, A Medical Corporation?

The NPI for California Em-I Medical Services, A Medical Corporation is 1053360156, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for California Em-I Medical Services, A Medical Corporation?

NPPES lists Mark Slepin (Director/Officer) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-08-31.