NADEEN Z. SWEIS MD
NPI 1720469539
Family Medicine in Lake Geneva, WI
About Nadeen Z. Sweis Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NADEEN Z. SWEIS MD (NPI 1720469539) is an individual family medicine provider in Lake Geneva, Wisconsin, licensed in Wisconsin (70318-20) and active in the NPI registry since June 2015. She is enrolled in Medicare PECOS, is affiliated with Northwestern Medicine Mchenry, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Other Identifiers 4
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Nadeen Z. Sweis Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Nadeen Sweis reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Janesville, WI 53548
- Reassigned Medicare billing, Illinois enrollment
- 671 clinicians in this Medicare group
Naperville, IL 60565
- Reassigned Medicare billing, Illinois enrollment
- 34 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northwestern Medicine Mchenry
Acute Care Hospitals · Mchenry, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53147 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LAKE GENEVA, WI 53147
LAKE GENEVA, WI 53147
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Nadeen Sweis's NPI number?
The NPI number for Nadeen Sweis is 1720469539. It was assigned to this individual provider in the NPPES registry on June 17, 2015.
Where is Nadeen Sweis located?
Nadeen Sweis practices at 350 Peller Rd, Lake Geneva, WI 53147. The listed phone number is (262) 249-0221.
What is Nadeen Sweis's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Nadeen Sweis enrolled in Medicare?
Yes. Nadeen Sweis is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Nadeen Sweis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nadeen Sweis reassigns Medicare benefits to 2 organizations: Mercy Health System Corporation (Janesville, WI) and First Docs PC (Naperville, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Nadeen Sweis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nadeen Sweis accept?
Health plans from Ambetter Health and Ambetter Health of Delaware list Nadeen Sweis as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Nadeen Sweis affiliated with any hospitals?
According to CMS data, Nadeen Sweis is affiliated with Northwestern Medicine Mchenry.
When was this NPI record last updated?
The NPPES record for Nadeen Sweis was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Nadeen Z. Sweis, MD · NPI 1720469539
Family Medicine physician in Lake Geneva, Wisconsin. Individual provider, active in the CMS NPPES registry since June 17, 2015.
## Identity
- **NPI:** 1720469539 (Entity type: Individual)
- **Enumerated:** June 17, 2015
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 70318-20 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 350 PELLER RD, Lake Geneva, WI 53147-4543
- **Phone:** (262) 249-0221 · **Fax:** (262) 249-0633
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Mercy Health System Corporation (NPI 1598718603, Janesville, WI); First Docs PC (NPI 1417655465, Naperville, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** September 29, 2026
- **Other identifiers:** Other K400603142 (WI); Other 1720469539 (WI); Other 1765 (WI); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1720469539) · Data from the CMS NPPES public registry.