Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Duane A. Karsten

Geriatric Care Certified Respiratory Therapist in Free Union, VA · enumerated 2006 · practices at Pdk Oximetry, LLC.

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

National Provider Identifier

1568553568

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Registry record

Entity type Individual (Type 1)

Name Mr. Duane A. Karsten

Sex Male

Practice address 7653 Mission Home Rd, Free Union, VA, 22940

Phone (804) 440-0232

Fax (877) 257-2067

Enumeration date Sep 27, 2006

Last updated in NPPES Oct 26, 2007

Taxonomy & licenses

2278G0305X Geriatric Care Certified Respiratory Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 0117001959 (VA) Primary

Other identifiers

Identifier	Type	State	Issuer
174784	Other	VA	ANTHEM

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.

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Frequently asked questions

How do I verify Duane Karsten's NPI record?

Cross-check NPI 1568553568 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1568553568 active?

Yes, as of the latest NPPES snapshot, NPI 1568553568 is active (record last updated 2007-10-26).

Other providers at this practice address

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Pdk Oximetry, LLC Geriatric Care Certified Respiratory Therapist · Free Union, VA NPI 1013102680

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-26.