Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Nelson Stephen Delgado, O.D.

Optometrist in Columbia, MD · enumerated 2007.

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

National Provider Identifier

1770601106

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Registry record

Entity type Individual (Type 1)

Name Dr. Nelson Stephen Delgado

Credential O.D.

Sex Male

Practice address 10300 Little Patuxent Pkwy, Suite 1005-B, Columbia, MD, 21044

Phone (410) 740-9952

Fax (410) 740-9731

Enumeration date Mar 26, 2007

Last updated in NPPES Nov 6, 2025

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License MD1273 (MD) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD 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 Nelson Delgado's NPI record?

Cross-check NPI 1770601106 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1770601106 active?

Yes, as of the latest NPPES snapshot, NPI 1770601106 is active (record last updated 2025-11-06).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-11-06.