Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. David Richard Luellwitz, D.O.

Glaucoma Specialist (Ophthalmology) Physician in Janesville, WI · enumerated 2006.

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

National Provider Identifier

1518066554

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Registry record

Entity type Individual (Type 1)

Name Dr. David Richard Luellwitz

Credential D.O.

Sex Male

Practice address 3524 E Milwaukee St, Janesville, WI, 53546

Phone (608) 756-7110

Fax (608) 756-7106

Enumeration date Sep 22, 2006

Last updated in NPPES Apr 6, 2017

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 45377 (WI) Secondary

207WX0009X Glaucoma Specialist (Ophthalmology) Physician Allopathic & Osteopathic Physicians · License 45377 (WI) Primary

207WX0009X Glaucoma Specialist (Ophthalmology) Physician Allopathic & Osteopathic Physicians · License 036110948 (IL) Secondary

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 036110948 (IL) Secondary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
43505100	Medicaid	WI	-

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

What specialty is David Luellwitz?

David Luellwitz is registered in NPPES with the primary taxonomy of Glaucoma Specialist (Ophthalmology) Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-04-06.