NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Karolyn Renee Martinkus, PA

Physician Assistant in Firestone, CO · enumerated 2009 · practices at Firestone Medical Center LLC.

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

National Provider Identifier

1538390828

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Ms. Karolyn Renee Martinkus
Credential PA
Sex Female
Practice address 5965 Firestone Blvd, Firestone, CO, 80504
Phone (720) 652-7055
Fax (720) 652-7056
Enumeration date Aug 4, 2009
Last updated in NPPES Sep 8, 2021

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA.0002844 (CO) 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

What is the NPI number for Karolyn Martinkus?
The National Provider Identifier (NPI) for Karolyn Martinkus is 1538390828, a Type 1 (individual) record in the CMS NPPES registry.
Where does Karolyn Martinkus practice?
The practice location on file with NPPES is in Firestone, CO. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-09-08.