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William Costa, MHRT-CSP

Counselor in Marshfield, ME · enumerated 2010.

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

National Provider Identifier

1003124983

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Registry record

Entity type Individual (Type 1)
Name William Costa
Credential MHRT-CSP
Sex Male
Practice address 14 Steves Ln, Marshfield, ME, 04654
Phone (207) 255-0995
Fax (207) 255-8748
Enumeration date Sep 14, 2010
Last updated in NPPES Feb 2, 2021

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers 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.

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Frequently asked questions

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is William Costa?
William Costa is registered in NPPES with the primary taxonomy of Counselor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-02-02.