Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mark Stephen Blue
Periodontics in Durango, CO · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1033190251
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Dr. Mark Stephen Blue
Sex Male
Practice address 555 S. Camino Del Rio, B1, Durango, CO, 81303
Phone (970) 385-6800
Fax (970) 385-4620
Enumeration date Nov 7, 2005
Last updated in NPPES Aug 7, 2019
Taxonomy & licenses
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.
Frequently asked questions
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Mark Blue?
Mark Blue is registered in NPPES with the primary taxonomy of Periodontics. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Nicole Pinkerton Obstetrics & Gynecology Physician · Durango, CO NPI 1104895481 Jeffrey Chamberlain Gynecology Physician · Durango, CO NPI 1922261262 Alpine Home Health and Hospice, Inc Community Based Hospice Care Agency · Durango, CO NPI 1013156678 Specialists in Women'S Care PC Gynecology Physician · Durango, CO NPI 1720318421 Sonas Imc, Inc Clinic/Center · Durango, CO NPI 1386959468 Lauren Sulier Dentist · Durango, CO NPI 1386337806
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-08-07.