Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Isaac Castellanos, DC

Pediatric Chiropractor in Casper, WY · enumerated 2025.

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

National Provider Identifier

1235091117

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Registry record

Entity type Individual (Type 1)

Name Dr. Isaac Castellanos

Credential DC

Sex Male

Practice address 800 Werner Ct Ste 220a, Casper, WY, 82601

Phone (307) 301-2918

Fax (307) 301-2919

Enumeration date Nov 29, 2025

Last updated in NPPES Nov 29, 2025

Taxonomy & licenses

111NP0017X Pediatric Chiropractor Chiropractic Providers · License 880 (WY) Primary

DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC 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

Where does Isaac Castellanos practice?

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

What is the NPI number for Isaac Castellanos?

The National Provider Identifier (NPI) for Isaac Castellanos is 1235091117, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-11-29.