NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Jan Dommerholt, MPT

Physical Therapist in Bethesda, MD · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1841335007

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mr. Jan Dommerholt
Credential MPT
Sex Male
Practice address 7830 Old Georgetown Rd, Suite C-15, Bethesda, MD, 20814
Fax (301) 656-6586
Enumeration date Feb 21, 2007
Last updated in NPPES Apr 11, 2008

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 16428 (MD) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1841335007 active?
Yes, as of the latest NPPES snapshot, NPI 1841335007 is active (record last updated 2008-04-11).
How do I verify Jan Dommerholt's NPI record?
Cross-check NPI 1841335007 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 →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-11.