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

Theresa Ann Wing

Q: What is the NPI number for Theresa Wing?

The National Provider Identifier (NPI) for Theresa Wing is 1043887375, a Type 1 (individual) record in the CMS NPPES registry.

Addiction (Substance Use Disorder) Registered Nurse in Lewiston, ME · enumerated 2021 · practices at Merrimack River Medical Services, Inc..

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

National Provider Identifier

1043887375

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Registry record

Entity type Individual (Type 1)

Name Theresa Ann Wing

Sex Female

Practice address Lewiston, ME, 04240

Phone (207) 312-6860

Enumeration date Jun 7, 2021

Last updated in NPPES Jun 7, 2021

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

Taxonomy & licenses

163WA0400X Addiction (Substance Use Disorder) Registered Nurse Nursing Service Providers · License RN45167 (ME) 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

Where does Theresa Wing practice?

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

What is the NPI number for Theresa Wing?

The National Provider Identifier (NPI) for Theresa Wing is 1043887375, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-07.