Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Noah Russell Rees Mason, MD
Hospitalist Physician in Aurora, CO · enumerated 2022.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1003566795
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Registry record
Entity type Individual (Type 1)
Name Dr. Noah Russell Rees Mason
Credential MD
Sex Male
Practice address 13123 E 16th Ave # B065, Aurora, CO, 80045
Phone (720) 777-2715
Enumeration date Mar 25, 2022
Last updated in NPPES Aug 14, 2025
Taxonomy & licenses
208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License DR.0075523 (CO) Secondary
208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License DR.0075523 (CO) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD 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.
Frequently asked questions
Where does Noah Mason practice?
The practice location on file with NPPES is in Aurora, CO. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Noah Mason?
The National Provider Identifier (NPI) for Noah Mason is 1003566795, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-08-14.