Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. James Joseph Voelker, M.D.

Urology Physician in Dubuque, IA · enumerated 2005.

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

National Provider Identifier

1063418069

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Registry record

Entity type Individual (Type 1)

Name Dr. James Joseph Voelker

Credential M.D.

Sex Male

Practice address 1500 Delhi St, Ste 4300, Dubuque, IA, 52001

Phone (563) 557-5971

Fax (563) 557-5973

Enumeration date Jun 23, 2005

Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 20549 (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
0150060	Medicaid	IA	-
0150946	Medicaid	IA	-

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

Where does James Voelker practice?

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

What is the NPI number for James Voelker?

The National Provider Identifier (NPI) for James Voelker is 1063418069, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.