Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Sonja Thorsen Baker, PT
Specialist in Hackettstown, NJ · enumerated 2015.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1720464217
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Registry record
Entity type Individual (Type 1)
Name Sonja Thorsen Baker
Credential PT
Sex Female
Practice address 1885 Route 57 Ste 5, Hackettstown, NJ, 07840
Phone (908) 852-5400
Fax (908) 852-5655
Enumeration date Aug 6, 2015
Last updated in NPPES Aug 6, 2015
Taxonomy & licenses
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
Is NPI 1720464217 active?
Yes, as of the latest NPPES snapshot, NPI 1720464217 is active (record last updated 2015-08-06).
How do I verify Sonja Baker's NPI record?
Cross-check NPI 1720464217 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-08-06.