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Hallowell & Macmannis, O.D., P.A.

Optometrist in Calais, ME · enumerated 2007 · authorized official Brian Hallowell, President.

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

National Provider Identifier

1689704025

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Registry record

Entity type Organization (Type 2)
Legal business name Hallowell & Macmannis, O.D., P.A.
Practice address 4 Park St, Calais, ME, 04619
Phone (207) 454-2277
Fax (207) 454-2910
Enumeration date Mar 6, 2007
Last updated in NPPES Mar 31, 2009

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License 567TA (ME) Primary
152W00000X Optometrist Eye and Vision Services Providers · License 667TA (ME) Secondary
152W00000X Optometrist Eye and Vision Services Providers · License OPT900 (ME) Secondary

Authorized official

Name Brian Hallowell
Title President
Phone (207) 454-2277

Other identifiers

Identifier Type State Issuer
126350000 Medicaid ME -

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 type of organization is Hallowell & Macmannis, O.D., P.A.?
Hallowell & Macmannis, O.D., P.A. is registered in NPPES as a Optometrist (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-03-31.