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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Leo Gutt, M.D.

Internal Medicine Physician in Buffalo Grove, IL · enumerated 2007.

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

National Provider Identifier

1801945480

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Registry record

Entity type Individual (Type 1)
Name Dr. Leo Gutt
Credential M.D.
Sex Male
Practice address 3011 Bayberry Dr, Buffalo Grove, IL, 60089
Enumeration date Jan 10, 2007
Last updated in NPPES Nov 24, 2023

Taxonomy & licenses

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License 036070396 (IL) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 036070396 (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
036070396 Medicaid IL -

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 is the NPI number for Leo Gutt?
The National Provider Identifier (NPI) for Leo Gutt is 1801945480, a Type 1 (individual) record in the CMS NPPES registry.
Where does Leo Gutt practice?
The practice location on file with NPPES is in Buffalo Grove, IL. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-24.