Renee Marszalek, MD
NPI 1730163445 · Hospitalist Physician · Summit, WI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Renee Marszalek, MD is a Hospitalist Physician provider in Summit, WI (NPI 1730163445).
Provider details
- NPI number
- 1730163445
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 47293 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
188 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 171 | $157 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 17 | $120 |
Typical Medicare-allowed amounts for these services range $120–$157 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-06
- Last updated
- 2024-08-29
- Certified
- 2024-08-29
Frequently asked questions
- What is Renee Marszalek's NPI number?
- Renee Marszalek's National Provider Identifier (NPI) is 1730163445, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Renee Marszalek's specialty?
- Renee Marszalek is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Renee Marszalek located?
- Renee Marszalek's practice location on file with NPPES is 36500 Aurora Dr, Summit, WI 53066-4899.
- What is Renee Marszalek's phone number?
- The practice phone number listed in the NPPES registry for Renee Marszalek is (262) 434-5000.
- Does Renee Marszalek accept Medicare?
- Renee Marszalek is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Renee Marszalek's NPI active?
- Yes — Renee Marszalek's NPI (1730163445) is active in the NPPES registry as of the last update on 2024-08-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.