NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Rosaasen Family Medicine, Inc.

Primary Care Clinic/Center in Thousand Oaks, CA · enumerated 2013 · authorized official Jonathan Rosaasen, President.

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

National Provider Identifier

1841636198

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Rosaasen Family Medicine, Inc.
Other name <Unavail>
Practice address 187 E Wilbur Rd # 100, Thousand Oaks, CA, 91360
Phone (805) 492-1015
Fax (805) 492-2035
Enumeration date May 14, 2013
Last updated in NPPES Oct 13, 2020

Taxonomy & classification

261QP2300X Primary Care Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Jonathan Rosaasen
Title President
Phone (805) 492-1015

Other identifiers

Identifier Type State Issuer
1174166714 Other CA ESGATE
1497868376 Other CA FAMILY MEDICINE
1528151352 Other CA FAMILY MEDICINE
1073150744 Other CA YOUNG

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 Rosaasen Family Medicine, Inc.?
The NPI for Rosaasen Family Medicine, Inc. is 1841636198, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Rosaasen Family Medicine, Inc.?
NPPES lists Jonathan Rosaasen (President) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-10-13.