Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ronald Williams
Clinical Social Worker in Athol, MA · enumerated 2015.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1275914954
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Registry record
Entity type Individual (Type 1)
Name Ronald Williams
Sex Male
Practice address 491 Main St, Athol, MA, 01331
Phone (978) 249-9490
Fax (978) 249-9514
Enumeration date Jun 17, 2015
Last updated in NPPES Jun 17, 2015
Taxonomy & licenses
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 is the NPI number for Ronald Williams?
The National Provider Identifier (NPI) for Ronald Williams is 1275914954, a Type 1 (individual) record in the CMS NPPES registry.
Where does Ronald Williams practice?
The practice location on file with NPPES is in Athol, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Penelope Sullivan Mental Health Counselor · Athol, MA NPI 1265599260 Charles Jones Counselor · Athol, MA NPI 1104043884 Claudine Shaffer Counselor · Athol, MA NPI 1538362538 Wendy Nine Counselor · Athol, MA NPI 1538369467 Brian Gordon Counselor · Athol, MA NPI 1922279371 Barbara Doyle Counselor · Athol, MA NPI 1356512701 Meaghan O'Donnell Counselor · Athol, MA NPI 1205007655 Rosemary Christoph Counselor · Athol, MA NPI 1285805648
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-06-17.