Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Kaitlin Murphy Widmer, MD

Hospitalist Physician in Aurora, CO · enumerated 2008.

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

National Provider Identifier

1538332242

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Registry record

Entity type Individual (Type 1)

Name Kaitlin Murphy Widmer

Credential MD

Sex Female

Practice address 13123 E. 16th Avenue, The Children'S Hospital, Aurora, CO, 80045

Phone (720) 777-1234

Enumeration date Apr 2, 2008

Last updated in NPPES Nov 17, 2018

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 49731 (CO) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License DR.0049731 (CO) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Kaitlin Widmer?

Kaitlin Widmer is registered in NPPES with the primary taxonomy of Hospitalist Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

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Joel Stoddard Psychiatry Physician · Aurora, CO NPI 1891769881 Kelley Roswell Pediatric Emergency Medicine (Pediatrics) Physician · Aurora, CO NPI 1598867608 Richard Ing Pediatric Anesthesiology Physician · Aurora, CO NPI 1184749582 Melissa Peterson Pediatric Anesthesiology Physician · Aurora, CO NPI 1669590105 Nicholas Cost Pediatric Urology Physician · Aurora, CO NPI 1801090691 Benjamin Mullin Clinical Child & Adolescent Psychologist · Aurora, CO NPI 1033304324 Florencia Cassani Pediatric Emergency Medicine (Pediatrics) Physician · Aurora, CO NPI 1740598143 Karina Marquetti-Cortes Psychiatric/Mental Health Nurse Practitioner · Aurora, CO NPI 1497181499

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-11-17.