Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Karen Rieger, MD

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Indianapolis, IN · enumerated 2006.

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

National Provider Identifier

1598870982

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Registry record

Entity type Individual (Type 1)

Name Karen Rieger

Credential MD

Sex Female

Practice address 535 Barnhill Dr, Indianapolis, IN, 46202

Phone (317) 944-2394

Fax (317) 274-2940

Enumeration date Aug 19, 2006

Last updated in NPPES Dec 29, 2020

Taxonomy & licenses

208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License 01047804 (IN) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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

How do I verify Karen Rieger's NPI record?

Cross-check NPI 1598870982 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1598870982 active?

Yes, as of the latest NPPES snapshot, NPI 1598870982 is active (record last updated 2020-12-29).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-12-29.