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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Robert A Colon, O.D.

Optometrist in Elko, NV · enumerated 2005 · practices at Colon & Alleman Ltd.

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

National Provider Identifier

1821096991

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Registry record

Entity type Individual (Type 1)
Name Dr. Robert A Colon
Credential O.D.
Sex Male
Practice address 2209 N 5th St, Elko, NV, 89801
Phone (775) 738-8491
Fax (775) 738-3313
Enumeration date Jul 12, 2005
Last updated in NPPES Apr 12, 2021

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 149 (NV) Primary
152WL0500X Low Vision Rehabilitation Optometrist Eye and Vision Services Providers · License 149 (NV) Secondary
152WP0200X Pediatric Optometrist Eye and Vision Services Providers · License 149 (NV) Secondary
152WS0006X Sports Vision Optometrist Eye and Vision Services Providers · License 149 (NV) Secondary
152WX0102X Occupational Vision Optometrist Eye and Vision Services Providers · License 149 (NV) Secondary
152WC0802X Corneal and Contact Management Optometrist Eye and Vision Services Providers · License 149 (NV) Secondary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier Type State Issuer
410021227 Other NV RR MEDICARE
627631 Other NV BCBS MEDIGAP
0373120001 Other NV DMERC PIN
00010029440 Other NV TAT
WCHMJ Other NV GROUP MEDICARE PIN
002504520 Medicaid NV -

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 NPI 1821096991 active?
Yes, as of the latest NPPES snapshot, NPI 1821096991 is active (record last updated 2021-04-12).
How do I verify Robert Colon's NPI record?
Cross-check NPI 1821096991 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-04-12.