Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Matthew James Mcnicholas, DC
Chiropractor in Groton, CT · enumerated 2017.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1912412636
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Dr. Matthew James Mcnicholas
Credential DC
Sex Male
Practice address 565 Long Hill Rd, Groton, CT, 06340
Phone (860) 448-2225
Fax (860) 446-0784
Enumeration date Dec 4, 2017
Last updated in NPPES Jan 11, 2022
Taxonomy & licenses
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders.
About the DC 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 is the NPI number for Matthew Mcnicholas?
The National Provider Identifier (NPI) for Matthew Mcnicholas is 1912412636, a Type 1 (individual) record in the CMS NPPES registry.
Where does Matthew Mcnicholas practice?
The practice location on file with NPPES is in Groton, CT. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Jennifer Armstrong Physical Therapist · Groton, CT NPI 1063466779 Diagnostic Imaging Services of Ct, LLC Diagnostic Radiology Physician · Groton, CT NPI 1093760431 Lynn Borzillo Acupuncturist · Groton, CT NPI 1245260330 Coastal Imaging LLC Diagnostic Radiology Physician · Groton, CT NPI 1366475766 Warren Geruso Chiropractor · Groton, CT NPI 1043236599 Advanced Back and Neck Care Center LLC Chiropractor · Groton, CT NPI 1588680078 Michael Thomas Chiropractor · Groton, CT NPI 1629098330 Joseph Mascaro Chiropractor · Groton, CT NPI 1770503492
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-11.