Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Kelly N Casteel, MD

Hematology & Oncology Physician in Longmont, CO · enumerated 2012.

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

National Provider Identifier

1740536291

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Registry record

Entity type Individual (Type 1)

Name Dr. Kelly N Casteel

Credential MD

Sex Female

Practice address 1760 E Ken Pratt Blvd Ste 302, Longmont, CO, 80504

Phone (303) 684-1900

Enumeration date Aug 1, 2012

Last updated in NPPES Jul 23, 2026

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License DR.0070194 (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
9000216540	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

Where does Kelly Casteel practice?

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

What is the NPI number for Kelly Casteel?

The National Provider Identifier (NPI) for Kelly Casteel is 1740536291, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-23.