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Mark Giacomin, DO

Emergency Medicine Physician in Barrington, IL · enumerated 2006.

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

National Provider Identifier

1215948153

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Registry record

Entity type Individual (Type 1)
Name Mark Giacomin
Credential DO
Sex Male
Practice address 450 W Highway 22, Barrington, IL, 60010
Phone (847) 381-9600
Enumeration date Aug 9, 2006
Last updated in NPPES Dec 31, 2021

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 036086637 (IL) Primary
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
P00365671 Other IL RAILROAD MEDICARE

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

Where does Mark Giacomin practice?
The practice location on file with NPPES is in Barrington, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mark Giacomin?
The National Provider Identifier (NPI) for Mark Giacomin is 1215948153, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-31.