Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Karen Ann Markham, PA-C

Physician Assistant in Thornton, CO · enumerated 2009.

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

National Provider Identifier

1154568756

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Registry record

Entity type Individual (Type 1)

Name Karen Ann Markham

Credential PA-C

Sex Female

Practice address 3260 E 104th Ave, Thornton, CO, 80233

Phone (720) 929-8300

Fax (720) 829-8444

Enumeration date Jan 19, 2009

Last updated in NPPES Jan 19, 2009

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 218 (CO) Primary

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 Karen Markham?

The National Provider Identifier (NPI) for Karen Markham is 1154568756, a Type 1 (individual) record in the CMS NPPES registry.

Where does Karen Markham practice?

The practice location on file with NPPES is in Thornton, CO. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-01-19.