Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Lorenz P Kielhorn, M.D.

Addiction Medicine (Family Medicine) Physician in Kalamazoo, MI · enumerated 2007 · practices at Victory Clinical Services LLC.

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

National Provider Identifier

1891816427

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Registry record

Entity type Individual (Type 1)

Name Mr. Lorenz P Kielhorn

Credential M.D.

Sex Male

Practice address 401 Howard St, Kalamazoo, MI, 49001

Phone (269) 344-4458

Fax (269) 344-4459

Enumeration date Apr 2, 2007

Last updated in NPPES Oct 14, 2015

Taxonomy & licenses

207QA0401X Addiction Medicine (Family Medicine) Physician Allopathic & Osteopathic Physicians · License 4301042187 (MI) Primary

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License 4301042187 (MI) Secondary

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
LK042187	Other	MI	BLUE CROSS BLUE SHIELD

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 NPI 1891816427 active?

Yes, as of the latest NPPES snapshot, NPI 1891816427 is active (record last updated 2015-10-14).

How do I verify Lorenz Kielhorn's NPI record?

Cross-check NPI 1891816427 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 2015-10-14.