Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dennis F. Kellar, MD

Pulmonary Disease Physician in Algonquin, IL · enumerated 2006 · practices at Northwest Pulmonary and Sleep Medicine Sc.

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

National Provider Identifier

1679683866

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dennis F. Kellar

Credential MD

Sex Male

Practice address Algonquin, IL, 60102

Phone (815) 477-7350

Fax (815) 477-7351

Enumeration date Aug 30, 2006

Last updated in NPPES Dec 21, 2021

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License 036-104219 (IL) 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
036104219	Medicaid	IL	-
K48748	Other	-	PTAN

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

What specialty is Dennis Kellar?

Dennis Kellar is registered in NPPES with the primary taxonomy of Pulmonary Disease 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.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-21.