Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Brian Lewis Niehaus, M.D.
Psychiatry Physician in Boulder, CO · enumerated 2010.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1043538598
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Registry record
Entity type Individual (Type 1)
Name Brian Lewis Niehaus
Credential M.D.
Sex Male
Practice address 2919 Valmont Rd Ste 209, Boulder, CO, 80301
Phone (720) 600-4023
Enumeration date May 7, 2010
Last updated in NPPES Sep 28, 2021
Taxonomy & licenses
2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License DR.0063984 (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
How do I verify Brian Niehaus's NPI record?
Cross-check NPI 1043538598 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1043538598 active?
Yes, as of the latest NPPES snapshot, NPI 1043538598 is active (record last updated 2021-09-28).
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-09-28.