Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Corissa Anne Mckallagat, O.D.

Optometrist in Newington, NH · enumerated 2010 · practices at Merrimack Eye Care, LLC.

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

National Provider Identifier

1215249651

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Corissa Anne Mckallagat

Credential O.D.

Sex Female

Practice address 50 Fox Run Rd, Newington, NH, 03801

Phone (603) 828-9601

Fax (603) 430-3076

Enumeration date Jul 13, 2010

Last updated in NPPES Jul 19, 2010

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License NH0844 (NH) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Corissa Mckallagat practice?

The practice location on file with NPPES is in Newington, NH. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Corissa Mckallagat?

The National Provider Identifier (NPI) for Corissa Mckallagat is 1215249651, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Inhyang Song Corneal and Contact Management Optometrist · Newington, NH NPI 1902812522 Merrimack Eye Care, LLC Optometrist · Newington, NH NPI 1336385087

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-19.