Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
David Merson
Physical Therapist in Allston, MA · enumerated 2009.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1356674881
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Registry record
Entity type Individual (Type 1)
Name David Merson
Sex Male
Practice address 1 Braintree St, Allston, MA, 02134
Phone (617) 787-8700
Fax (617) 787-8106
Enumeration date Sep 16, 2009
Last updated in NPPES Sep 16, 2009
Taxonomy & licenses
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 18781 (MA) Primary
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
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.
What specialty is David Merson?
David Merson is registered in NPPES with the primary taxonomy of Physical Therapist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Paul R Clark Customized Equipment (DME) · Allston, MA NPI 1851577795 Mael Chiropractic, P.C. Chiropractor · Allston, MA NPI 1578873659 Michelle Perry Physical Therapist · Allston, MA NPI 1457793606 Michael Bachner Physical Therapist · Boston, MA NPI 1932616315 Jason Schoenfelder Physical Therapist · Boston, MA NPI 1932608692 Michael Geiger Physical Therapist · Boston, MA NPI 1982163614 Tyler Greffrath Physical Therapist · Boston, MA NPI 1649986266 Kristen Davis Physical Therapist · Boston, MA NPI 1912772815
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-09-16.