Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. William Lewis Trevens, D.C.
Chiropractor in Watertown, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1144284969
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Registry record
Entity type Individual (Type 1)
Name Dr. William Lewis Trevens
Credential D.C.
Sex Male
Practice address 3 Main St, Watertown, MA, 02472
Phone (617) 926-2884
Fax (617) 926-2942
Enumeration date Apr 17, 2006
Last updated in NPPES Jul 9, 2007
Taxonomy & licenses
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders.
About the DC credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1610341 | Medicaid | MA | - |
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
Where does William Trevens practice?
The practice location on file with NPPES is in Watertown, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for William Trevens?
The National Provider Identifier (NPI) for William Trevens is 1144284969, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.