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

Nathaniel C Sears

Ophthalmology Physician in Portsmouth, NH · enumerated 2012 · practices at Eyesight Ophthalmic Services Pllc.

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

National Provider Identifier

1306103577

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Registry record

Entity type Individual (Type 1)

Name Nathaniel C Sears

Sex Male

Practice address Portsmouth, NH, 03801

Phone (603) 436-1773

Fax (603) 427-0655

Enumeration date Apr 12, 2012

Last updated in NPPES Oct 17, 2024

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

Taxonomy & licenses

207WX0009X Glaucoma Specialist (Ophthalmology) Physician Allopathic & Osteopathic Physicians · License MD-44380 (IA) Secondary

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 24997 (NH) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1306103577 active?

Yes, as of the latest NPPES snapshot, NPI 1306103577 is active (record last updated 2024-10-17).

How do I verify Nathaniel Sears's NPI record?

Cross-check NPI 1306103577 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 2024-10-17.