NPI Portal NPI Lookup & Verification

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Nancy J Christmas, MD

Retina Specialist (Ophthalmology) Physician in Denver, CO · enumerated 2006 · practices at Catholic Health Initiatives Colorado.

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

National Provider Identifier

1619927456

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Registry record

Entity type Individual (Type 1)
Name Nancy J Christmas
Credential MD
Sex Female
Practice address 8101 E Lowry Blvd Ste 210, Denver, CO, 80230
Fax (303) 261-1601
Enumeration date May 11, 2006
Last updated in NPPES Mar 11, 2020

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License DR.0044428 (CO) Secondary
207WX0107X Retina Specialist (Ophthalmology) Physician Allopathic & Osteopathic Physicians · License DR.0044428 (CO) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
4708865 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.

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Frequently asked questions

What is the NPI number for Nancy Christmas?
The National Provider Identifier (NPI) for Nancy Christmas is 1619927456, a Type 1 (individual) record in the CMS NPPES registry.
Where does Nancy Christmas practice?
The practice location on file with NPPES is in Denver, 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 2020-03-11.