Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alan K. Thompson, O.D.

Optometrist in Portsmouth, NH · enumerated 2006.

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

National Provider Identifier

1740393156

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Registry record

Entity type Individual (Type 1)

Name Dr. Alan K. Thompson

Credential O.D.

Sex Male

Practice address 155 Borthwick Ave, Suite 200 East, Portsmouth, NH, 03801

Phone (603) 436-1773

Fax (603) 427-0655

Enumeration date Aug 17, 2006

Last updated in NPPES May 9, 2008

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 0776 (NH) Primary

152W00000X Optometrist Eye and Vision Services Providers · License 2577 (MA) Secondary

152WC0802X Corneal and Contact Management Optometrist Eye and Vision Services Providers · License 0776 (NH) Secondary

152WC0802X Corneal and Contact Management Optometrist Eye and Vision Services Providers · License 2577 (MA) Secondary

152WX0102X Occupational Vision Optometrist Eye and Vision Services Providers · License 0776 (NH) Secondary

152WX0102X Occupational Vision Optometrist Eye and Vision Services Providers · License 2577 (MA) Secondary

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

What is the NPI number for Alan Thompson?

The National Provider Identifier (NPI) for Alan Thompson is 1740393156, a Type 1 (individual) record in the CMS NPPES registry.

Where does Alan Thompson practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-09.