Ancillary Practice, LLC

Ancillary Practice, LLC is a healthcare organization registered as Clinical Medical Laboratory in Centennial, CO, holding Type 2 (organization) NPI 1912376245 since 2015. The authorized official on file is William Gunkel, Owner.

✓ Active NPI ✓ Valid NPI checksum

NPI	1912376245
Entity type	Organization (Type 2)
Legal business name	Ancillary Practice, LLC
Practice address	6629 E HERITAGE PL N, Centennial, CO, 80111
Phone	7203398758
Enumeration date	2015-09-16
Last updated in NPPES	2015-09-16

Authorized official

Name	William Gunkel
Title	Owner
Phone	7203398758

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
291U00000X	Clinical Medical Laboratory	Primary	—	—

Copy-ready billing details

Provider: Ancillary Practice, LLC
NPI: 1912376245
Taxonomy: 291U00000X (Clinical Medical Laboratory)
Address: 6629 E HERITAGE PL N, Centennial, CO, 80111

Verify this record

Cross-check NPI 1912376245 against the authoritative CMS record: view Ancillary Practice, LLC on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2015-09-16. Verify at npiregistry.cms.hhs.gov.

Where is Ancillary Practice, LLC located?

The practice location on file with NPPES is in Centennial, CO.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2015-09-16.