Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Maxime Giesen, DPT
Physical Therapist in Waltham, MA · enumerated 2022.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1831801364
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Registry record
Entity type Individual (Type 1)
Name Maxime Giesen
Credential DPT
Sex Male
Practice address 425 Waverly Oaks Rd, Waltham, MA, 02452
Phone (781) 373-3620
Fax (781) 373-3953
Enumeration date Dec 15, 2022
Last updated in NPPES Dec 15, 2022
Taxonomy & licenses
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 26591 (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
How do I verify Maxime Giesen's NPI record?
Cross-check NPI 1831801364 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1831801364 active?
Yes, as of the latest NPPES snapshot, NPI 1831801364 is active (record last updated 2022-12-15).
Other providers at this practice address
Browse all → James Marcotte Physical Therapist · Waltham, MA NPI 1285687608 Kaila Birchall Physical Therapist · Waltham, MA NPI 1306390794 Carly Theriault Physical Therapist · Waltham, MA NPI 1861091613 Igor Khuzeykin Physical Therapist · Waltham, MA NPI 1023899192 Reily Piotrowski Physical Therapist · Waltham, MA NPI 1194561217 Krina Shah Physical Therapist · Waltham, MA NPI 1124810429
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-12-15.