Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael Thomas Flisak, DO

Interventional Cardiology Physician in Michigan City, IN · enumerated 2008.

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

National Provider Identifier

1548426943

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael Thomas Flisak

Credential DO

Sex Male

Practice address 3500 Franciscan Way Ste 400, Michigan City, IN, 46360

Phone (219) 878-8200

Fax (219) 877-8331

Enumeration date Aug 5, 2008

Last updated in NPPES Mar 5, 2019

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 036118827 (IL) Secondary

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 55811 (WI) Secondary

207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License 036118827 (IL) Secondary

207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License 02005248 (IN) 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
P01078187	Other	IL	RR MEDICARE
01621208	Other	IL	BLUE CROSS BLUE SHIELD GROUP PROVIDER
300009476	Medicaid	IN	-
1508810086	Other	-	GROUP NPI

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

Is NPI 1548426943 active?

Yes, as of the latest NPPES snapshot, NPI 1548426943 is active (record last updated 2019-03-05).

How do I verify Michael Flisak's NPI record?

Cross-check NPI 1548426943 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-03-05.