Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
John Grigas, LCSW
Social Worker in Lewiston, ME · enumerated 2022.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1699400770
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Registry record
Entity type Individual (Type 1)
Name John Grigas
Credential LCSW
Sex Male
Practice address 646 Main St, Lewiston, ME, 04240
Phone (207) 376-1711
Enumeration date Jul 21, 2022
Last updated in NPPES Apr 1, 2025
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License LC24575 (ME) Primary
LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy.
About the LCSW 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.
Frequently asked questions
What specialty is John Grigas?
John Grigas is registered in NPPES with the primary taxonomy of Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.
Other providers at this practice address
Browse all → Richardson Hollow Associates Inc Case Management Agency · Lewiston, ME NPI 1447321005 Richardson Hollow Assoc., Inc. Mental Health Counselor · Lewiston, ME NPI 1912060294 Francine Falcone Mental Health Counselor · Lewiston, ME NPI 1588718332 Nora Morse Mental Health Counselor · Lewiston, ME NPI 1710032537
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-01.