Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Christopher Iby, DPT
Physical Therapist in Concord, MA · enumerated 2016.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1821450438
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Registry record
Entity type Individual (Type 1)
Name Christopher Iby
Credential DPT
Sex Male
Practice address 133 Old Road To 9 Acre Cor, Concord, MA, 01742
Phone (978) 589-6999
Enumeration date Mar 23, 2016
Last updated in NPPES Mar 23, 2016
Taxonomy & licenses
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 20064 (MA) Primary
DPT · Doctor of Physical Therapy: A physical therapist holding the clinical doctorate now standard for the profession.
About the DPT 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 Christopher Iby?
The National Provider Identifier (NPI) for Christopher Iby is 1821450438, a Type 1 (individual) record in the CMS NPPES registry.
Where does Christopher Iby practice?
The practice location on file with NPPES is in Concord, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Gerald Malkin Anesthesiology Physician · Concord, MA NPI 1265421523 Charles Wasserman Psychiatry Physician · Concord, MA NPI 1659361020 David Barash Emergency Medicine Physician · Concord, MA NPI 1699756296 Marcia Gnagey Certified Registered Nurse Anesthetist · Concord, MA NPI 1952384836 James Street Anesthesiology Physician · Concord, MA NPI 1124002167 Jeffrey Riley Obstetrics & Gynecology Physician · Concord, MA NPI 1245216894 Joseph Bergen Emergency Medicine Physician · Concord, MA NPI 1518921972 David Sherman Cytopathology Physician · Concord, MA NPI 1144284993
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-03-23.