Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Heather K Martyn, MSPT
Physical Therapist in Haverhill, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1346266111
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Registry record
Entity type Individual (Type 1)
Name Heather K Martyn
Credential MSPT
Sex Female
Practice address 3 Ferry St, Suite F, Haverhill, MA, 01835
Phone (978) 469-9412
Fax (978) 469-0693
Enumeration date Jul 14, 2006
Last updated in NPPES Feb 22, 2013
Taxonomy & licenses
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 3063 (NH) Secondary
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 15523 (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
Where does Heather Martyn practice?
The practice location on file with NPPES is in Haverhill, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Heather Martyn?
The National Provider Identifier (NPI) for Heather Martyn is 1346266111, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Karen Murphy Physical Therapist · Haverhill, MA NPI 1881606911 Sean Riley Physical Therapist · Haverhill, MA NPI 1376729806 Kelly Hardy Physical Therapist · Haverhill, MA NPI 1205121738 Carole Hanedanian Clinical Social Worker · Bradford, MA NPI 1275933475 Robert Brown Clinical Social Worker · Bradford, MA NPI 1417449877 Christopher Avdoian Clinical Social Worker · Bradford, MA NPI 1568945558 Christine Sciacca Mental Health Counselor · Haverhill, MA NPI 1538731914 Robert Moreau Behavior Analyst · Haverhill, MA NPI 1518530799
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-02-22.