Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Robert Gerard Kummerer, M.D.

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Libertyville, IL · enumerated 2005.

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

National Provider Identifier

1902891674

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Registry record

Entity type Individual (Type 1)

Name Dr. Robert Gerard Kummerer

Credential M.D.

Sex Male

Practice address 890 Garfield Ave, Suite 101, Libertyville, IL, 60048

Phone (847) 990-5636

Fax (847) 367-1535

Enumeration date Sep 19, 2005

Last updated in NPPES Dec 17, 2021

Taxonomy & licenses

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License 036087848 (IL) Secondary

208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License 55253-20 (WI) Secondary

208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License 036087848 (IL) Primary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 036087848 (IL) Secondary

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License 55253-20 (WI) 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
200269890B	Medicaid	IN	-
036087848	Medicaid	IL	-
200269890A	Medicaid	IN	-
01618941	Other	IL	BCBS
1902891674	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 Robert Kummerer?

Robert Kummerer is registered in NPPES with the primary taxonomy of Thoracic Surgery (Cardiothoracic Vascular Surgery) 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 2021-12-17.