NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stephen Kotarek, PA

Medical Physician Assistant in Marysville, CA · enumerated 2009 · practices at Adventist Health Physicians Network.

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

National Provider Identifier

1235371915

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Stephen Kotarek
Credential PA
Sex Male
Practice address 414 G St Ste 221, Marysville, CA, 95901
Phone (916) 733-5090
Enumeration date Mar 27, 2009
Last updated in NPPES Nov 25, 2019

Taxonomy & licenses

363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA19292 (CA) Primary
PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program. About the PA credential

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

Where does Stephen Kotarek practice?
The practice location on file with NPPES is in Marysville, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Stephen Kotarek?
The National Provider Identifier (NPI) for Stephen Kotarek is 1235371915, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-11-25.