Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Renee B Marszalek, MD

Hospitalist Physician in Summit, WI · enumerated 2005.

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

National Provider Identifier

1730163445

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Registry record

Entity type Individual (Type 1)

Name Renee B Marszalek

Credential MD

Sex Female

Practice address 36500 Aurora Dr, Summit, WI, 53066

Phone (262) 434-5000

Enumeration date Dec 6, 2005

Last updated in NPPES Aug 29, 2024

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 47293 (WI) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 47293 (WI) 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
34574400	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1730163445 active?

Yes, as of the latest NPPES snapshot, NPI 1730163445 is active (record last updated 2024-08-29).

How do I verify Renee Marszalek's NPI record?

Cross-check NPI 1730163445 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Judith Gresky Nurse Practitioner · Summit, WI NPI 1962401794 Gregory Nelson Emergency Medicine Physician · Summit, WI NPI 1841299385 Kimberly Ireland Ophthalmology Physician · Summit, WI NPI 1366435851 Dennis Zagrodnik Surgery Physician · Summit, WI NPI 1538155569 Andrew Dodd Plastic and Reconstructive Surgery Physician · Summit, WI NPI 1811979156 Nimish Vakil Gastroenterology Physician · Summit, WI NPI 1336124585 Krishna Prasad Emergency Medicine Physician · Summit, WI NPI 1306822747 Michael Kefer Emergency Medicine Physician · Summit, WI NPI 1457337891

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-29.