Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Colleen Marie Markham, FNP-BC
Family Nurse Practitioner in Englewood, CO · enumerated 2020 · practices at Optum Behavioral Care of Colorado, P.C..
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1497384564
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| RXN.0104644-NP | Other | CO | COLORADO BOARD OF NURSING PRESCRIPTIVE AUTHORITY # |
| 32430 | Other | TN | TENNESSEE BOARD OF NURSING APRN LICENSE |
| APN.0995437-NP | Other | CO | COLORADO BOARD OF NURSING LICENSE # |
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.
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Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-04-30.