Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Karen Lucius Anderson, P.T.
Physical Therapist in Ayer, MA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1639294390
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Registry record
Entity type Individual (Type 1)
Name Karen Lucius Anderson
Credential P.T.
Sex Female
Practice address 400 Groton Rd, Ayer, MA, 01432
Phone (978) 772-1704
Enumeration date Mar 20, 2007
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 1880 (MA) Primary
PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation.
About the PT 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 Karen Anderson?
The National Provider Identifier (NPI) for Karen Anderson is 1639294390, a Type 1 (individual) record in the CMS NPPES registry.
Where does Karen Anderson practice?
The practice location on file with NPPES is in Ayer, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → The Apple Valley Limited Partnership Skilled Nursing Facility · Ayer, MA NPI 1174578082 Phillip Buchieri Specialist · Ayer, MA NPI 1235262429 Karen Hewitt Physical Therapy Assistant · Ayer, MA NPI 1730203423 Anne Marie Gloria Physical Therapy Assistant · Ayer, MA NPI 1912022682 Pamela Walls Occupational Therapist · Ayer, MA NPI 1073639811 Annette Dratch Occupational Therapist · Ayer, MA NPI 1780807651 Shirley Kraft Occupational Therapist · Ayer, MA NPI 1558585141 Jennifer Mapes Occupational Therapist · Ayer, MA NPI 1871712331
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.