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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Larry D Underwood, MD

Ophthalmology Physician in Wheat Ridge, CO · enumerated 2005.

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

National Provider Identifier

1366439838

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Registry record

Entity type Individual (Type 1)
Name Larry D Underwood
Credential MD
Sex Male
Practice address Wheat Ridge, CO, 80033
Phone (303) 424-3206
Fax (303) 940-1099
Enumeration date Sep 30, 2005
Last updated in NPPES Oct 6, 2009

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 20049 (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.

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Frequently asked questions

How do I verify Larry Underwood's NPI record?
Cross-check NPI 1366439838 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1366439838 active?
Yes, as of the latest NPPES snapshot, NPI 1366439838 is active (record last updated 2009-10-06).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-10-06.