Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Timothy J Koelz, M.D.

Diagnostic Radiology Physician in Minneapolis, MN · enumerated 2006.

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

National Provider Identifier

1427001635

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Timothy J Koelz

Credential M.D.

Sex Male

Practice address 1221 Nicollet Ave, Suite 600, Minneapolis, MN, 55403

Phone (612) 573-2232

Fax (612) 573-2274

Enumeration date May 18, 2006

Last updated in NPPES Jul 25, 2008

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 19117 (MN) 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
1942557	Medicaid	IA	-
HP13715	Other	MN	HEALTHPARTNERS
714985000	Medicaid	MN	-
100700	Other	MN	UCARE
30627000	Medicaid	WI	-
9214136	Other	MN	DAKOTA CARE
08829KO	Other	MN	BLUE CROSS
297G1KO	Other	MN	BLUE CROSS
300077289	Other	MN	RAILROAD MEDICARE MN
0247009	Other	MN	PREFERRED ONE
22845	Other	MN	AMERICA'S PPO

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 this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Timothy Koelz?

Timothy Koelz is registered in NPPES with the primary taxonomy of Diagnostic Radiology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-07-25.