Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

3rivers, Inc.

Intellectual and/or Developmental Disabilities Community Based Residential Treatment Facility in Gardiner, ME · enumerated 2006 · authorized official Ann-Marie Mayberry, Ceo.

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

National Provider Identifier

1063473866

Verified

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Registry record

Entity type Organization (Type 2)

Legal business name 3rivers, Inc.

Practice address 25 Winter St, Gardiner, ME, 04345

Phone (207) 582-8021

Fax (207) 582-2457

Enumeration date Mar 31, 2006

Last updated in NPPES Jul 16, 2025

Taxonomy & classification

251C00000X Developmentally Disabled Services Day Training Agency Agencies Secondary

320900000X Intellectual and/or Developmental Disabilities Community Based Residential Treatment Facility Residential Treatment Facilities Primary

Authorized official

Name Ann-Marie Mayberry

Title Ceo

Phone (207) 523-5171

Other identifiers

Identifier	Type	State	Issuer
102960108	Medicaid	ME	-
102960100	Medicaid	ME	-
102960101	Medicaid	ME	-
102960102	Medicaid	ME	-
102960105	Medicaid	ME	-
102960201	Medicaid	ME	-
102960300	Medicaid	ME	-
102960109	Medicaid	ME	-
102960104	Medicaid	ME	-
102960000	Medicaid	ME	-
102960103	Medicaid	ME	-
102960106	Medicaid	ME	-
102960107	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where is 3rivers, Inc. located?

The practice location on file with NPPES is in Gardiner, ME.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2025-07-16. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-16.