Jonathan D Sierk, DDS, PC

Jonathan D Sierk, DDS, PC is a healthcare organization registered as Pediatric Dentistry in Castle Pines, CO, holding Type 2 (organization) NPI 1558944884 since 2021. The authorized official on file is Jonathan Sierk, Dentist/Owner.

✓ Active NPI ✓ Valid NPI checksum

NPI	1558944884
Entity type	Organization (Type 2)
Legal business name	Jonathan D Sierk, DDS, PC
Practice address	361 VILLAGE SQUARE LN STE 100, Castle Pines, CO, 80108
Phone	3038654066
Fax	3038654067
Enumeration date	2021-05-04
Last updated in NPPES	2021-05-04

Authorized official

Name	Jonathan Sierk
Title	Dentist/Owner
Phone	3038654066

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
1223P0221X	Pediatric Dentistry	Primary	—	—

Other identifiers

Identifier	Type	State	Issuer
8670	Other	CO	COLORADO DENTAL LICENSE

Copy-ready billing details

Provider: Jonathan D Sierk, DDS, PC
NPI: 1558944884
Taxonomy: 1223P0221X (Pediatric Dentistry)
Address: 361 VILLAGE SQUARE LN STE 100, Castle Pines, CO, 80108

Providers at this address

NPI	Name	Type	Specialty	Location
1568286466	Brandon Linn Orthodontics, PC	Organization	Orthodontics and Dentofacial Orthopedics Dentistry	Castle Pines, CO

Verify this record

Cross-check NPI 1558944884 against the authoritative CMS record: view Jonathan D Sierk, DDS, PC 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

Where is Jonathan D Sierk, DDS, PC located?

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2021-05-04. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2021-05-04.