Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Karolyn Renee Martinkus, PA
Physician Assistant in Windsor, CO · enumerated 2009.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1538390828
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Registry record
Entity type Individual (Type 1)
Name Ms. Karolyn Renee Martinkus
Credential PA
Sex Female
Practice address 601 Main St, Windsor, CO, 80550
Phone (970) 632-4956
Fax (970) 445-5394
Enumeration date Aug 4, 2009
Last updated in NPPES Sep 24, 2026
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.
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 Windsor, 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 2026-09-24.