Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Douglas Siemen, PTA

Physical Therapy Assistant in West Liberty, IA · enumerated 2015.

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

National Provider Identifier

1871968024

Verified

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Registry record

Entity type Individual (Type 1)

Name Douglas Siemen

Credential PTA

Sex Male

Practice address West Liberty, IA, 52776

Phone (563) 212-5593

Enumeration date Dec 14, 2015

Last updated in NPPES Dec 14, 2015

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

225200000X Physical Therapy Assistant Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 5076 (IA) Primary

Other identifiers

Identifier	Type	State	Issuer
5076	Other	IA	IOWA THERAPY LICENSE

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

What is the NPI number for Douglas Siemen?

The National Provider Identifier (NPI) for Douglas Siemen is 1871968024, a Type 1 (individual) record in the CMS NPPES registry.

Where does Douglas Siemen practice?

The practice location on file with NPPES is in West Liberty, IA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-12-14.