Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William J Witcik, M.D,

Cardiovascular Disease Physician in Davenport, IA · enumerated 2006.

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

National Provider Identifier

1619956547

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Registry record

Entity type Individual (Type 1)

Name Dr. William J Witcik

Credential M.D,

Sex Male

Practice address 1236 E Rusholme St, Suite 300, Davenport, IA, 52803

Phone (563) 324-2992

Fax (563) 888-0499

Enumeration date Jan 10, 2006

Last updated in NPPES Feb 11, 2021

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License MD-29219 (IA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
1105999	Medicaid	IA	-
060032126	Other	-	MEDICARE RAILROAD

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

Is NPI 1619956547 active?

Yes, as of the latest NPPES snapshot, NPI 1619956547 is active (record last updated 2021-02-11).

How do I verify William Witcik's NPI record?

Cross-check NPI 1619956547 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-02-11.