Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Grace D Ortega-Walker, FNP

Nurse Practitioner in Aurora, CO · enumerated 2007 · practices at Oak Street Health Physicians Group of Colorado, Pllc.

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

National Provider Identifier

1043363294

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Registry record

Entity type Individual (Type 1)

Name Grace D Ortega-Walker

Credential FNP

Sex Female

Practice address 740 Peoria St, Aurora, CO, 80011

Phone (720) 531-7111

Fax (720) 640-3317

Enumeration date Jan 19, 2007

Last updated in NPPES Oct 26, 2022

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 93087 (CO) Primary

FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP credential

Other identifiers

Identifier	Type	State	Issuer
41185579	Medicaid	CO	-

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 Grace Ortega-Walker?

The National Provider Identifier (NPI) for Grace Ortega-Walker is 1043363294, a Type 1 (individual) record in the CMS NPPES registry.

Where does Grace Ortega-Walker practice?

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

Other providers at this practice address

Browse all →

Jennifer Ziouras Internal Medicine Physician · Aurora, CO NPI 1619976099 Luciann Rosen Nurse Practitioner · Aurora, CO NPI 1013936897 Jason Cadwallader Internal Medicine Physician · Aurora, CO NPI 1942467469 Haydn Jessup Clinical Social Worker · Aurora, CO NPI 1881056802 Christiana Shoushtari Internal Medicine Physician · Aurora, CO NPI 1265938906 Oak Street Health Physicians Group of Colorado, Pllc Primary Care Clinic/Center · Aurora, CO NPI 1760197891 Melissa Sheppard Nurse Practitioner · Aurora, CO NPI 1548023120 Amanda Cosgrove Social Worker · Aurora, CO NPI 1245156728

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-10-26.