Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Nathan A Brinn, MD

Internal Medicine Physician in Fort Collins, CO · enumerated 2005 · practices at Poudre Valley Medical Group, LLC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1851377071

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Registry record

Entity type Individual (Type 1)

Name Dr. Nathan A Brinn

Credential MD

Sex Male

Practice address 4674 Snow Mesa Dr Ste 200, Fort Collins, CO, 80528

Phone (970) 266-3650

Enumeration date Dec 20, 2005

Last updated in NPPES Jul 9, 2025

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 009000331 (NC) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License ME123206 (FL) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License DR.0074560 (CO) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License DR.0074560 (CO) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
150L3	Other	FL	BLUE CROSS BLUE SHIELD
015106800	Medicaid	FL	-

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.

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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 Nathan Brinn?

Nathan Brinn is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-09.