Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Douglas Charles Claussen, DPT
Physical Therapist in Modesto, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1841268661
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Douglas Charles Claussen
Credential DPT
Sex Male
Practice address 2116 E Orangeburg Ave, Modesto, CA, 95355
Phone (209) 529-1709
Fax (209) 572-2841
Enumeration date Mar 8, 2006
Last updated in NPPES Feb 28, 2019
Taxonomy & licenses
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License PT8536 (CA) Primary
DPT · Doctor of Physical Therapy: A physical therapist holding the clinical doctorate now standard for the profession.
About the DPT credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| PT8536 | Other | CA | LICENSE NUMBER |
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 1841268661 active?
Yes, as of the latest NPPES snapshot, NPI 1841268661 is active (record last updated 2019-02-28).
How do I verify Douglas Claussen's NPI record?
Cross-check NPI 1841268661 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Athletic & Industrial Rehabilitatn Physical Therapy Inc A Prof Corp Physical Therapy Clinic/Center · Modesto, CA NPI 1578531398 Lenita Williamson Orthopaedic Surgery Physician · Modesto, CA NPI 1245271253 Rajdeep Sahota Foot & Ankle Surgery Podiatrist · Modesto, CA NPI 1336311760 Elizabeth Buhler Nurse Practitioner · Modesto, CA NPI 1104176999 Karen Ann Rayos Family Medicine Physician · Modesto, CA NPI 1114300209 Livingston Community Health Federally Qualified Health Center (FQHC) · Modesto, CA NPI 1760191811
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-02-28.