Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Nathaniel Civili, NP

Family Nurse Practitioner in Castle Rock, CO · enumerated 2019.

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

National Provider Identifier

1003457276

Verified

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Registry record

Entity type Individual (Type 1)

Name Nathaniel Civili

Credential NP

Sex Male

Practice address Castle Rock, CO, 80108

Phone (720) 330-1305

Fax (720) 452-2079

Enumeration date Sep 30, 2019

Last updated in NPPES May 13, 2025

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License APN.0994776-NP (CO) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP 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 is the NPI number for Nathaniel Civili?

The National Provider Identifier (NPI) for Nathaniel Civili is 1003457276, a Type 1 (individual) record in the CMS NPPES registry.

Where does Nathaniel Civili practice?

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

Other providers at this practice address

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Chad Boekes Family Medicine Physician · Castle Rock, CO NPI 1538245816 Lindsay Kotal Medical Physician Assistant · Castle Rock, CO NPI 1104360668 Lauryn Hill Physician Assistant · Castle Rock, CO NPI 1679115539 Michael Weston Family Medicine Physician · Castle Rock, CO NPI 1316526510 Portercare Adventist Health System Family Medicine Physician · Castle Rock, CO NPI 1275357576 Pahs Onpoint Urgent Care LLC Urgent Care Clinic/Center · Castle Rock, CO NPI 1053118794

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-13.