Active NPI
Nadeen Z. Sweis, MD
- Family Medicine Physician
- Lake Geneva, WI
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Family Medicine Physician
- License
- 70318-20
- Practice address
- 350 Peller Rd
Lake Geneva, WI 53147-4543 - Phone
- (262) 249-0221
- Fax
- (262) 249-0633
- NPI assigned
- Jun 17, 2015
- Last updated
- Sep 29, 2026
- Sex
- Female
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Family Medicine Physician | 207Q00000X | 4301107823 | MI | |
| Family Medicine Physician | 207Q00000X | 70318-20 | WI | Primary |
Addresses
Primary practice location
350 Peller Rd
Lake Geneva, WI 53147-4543
Mailing address
350 Peller Rd
Lake Geneva, WI 53147-4543
Phone (262) 249-0221
Other practice location 1
4611 Campus Ridge
Midland, MI 48670-6122
Phone (989) 839-3500
Other practice location 2
839 N Wisconsin St
Elkhorn, WI 53121-1138
Phone (262) 741-1400
Other identifiers 4
| Identifier | Type | State | Issuer |
|---|---|---|---|
| K400603142 | Other | WI | WI MEDICARE |
| 1720469539 | Other | WI | BCBSWI |
| 1765 | Other | WI | MERCYCARE INSURANCE |
| 1720469539 | Medicaid | WI |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in IL
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Family Practice
- Education
- Other, 2014
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
471 W Terra Cotta Ave
Crystal Lake, IL 60014-3434
Phone (609) 585-1122
Hospital & facility affiliations
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine, Master of Science
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Mercy Health System Corporation | Current | Accepting new patients | |
| First Docs PC | Current | Accepting new patients | |
| Mercy Health System Corporation | Current | Accepting new patients | |
| Mercy Health System Corporation | Current | Accepting new patients | |
| Mymichigan Medical Center Midland | Family Medicine | Past | Accepting new patients |
| Mymichigan Medical Center Midland | Past | Accepting new patients |
Locations
2401 Harnish Dr
Algonquin, IL 60102
Phone (847) 458-5440
29624 Network Pl
Chicago, IL 60673
Phone (608) 741-7652
471 W Terra Cotta Ave
Crystal Lake, IL 60014
Phone (815) 455-0550
348 S Division St
Harvard, IL 60033
Phone (815) 943-1122
550 Ridgeview Dr
McHenry, IL 60050
Phone (800) 455-6768
1525 Oxford Ln
Naperville, IL 60565
Phone (224) 441-7428
839 N Wisconsin St
Elkhorn, WI 53121
Phone (262) 723-5055
1000 Mineral Point Ave
Janesville, WI 53548
Phone (608) 261-6868
350 Peller Rd
Lake Geneva, WI 53147
Phone (262) 245-0221
Ownership & related parties
All facility ownership & control disclosures 1
Facilities whose Medicare enrollment lists this provider’s PECOS associate ID as an owner or managing party.
| Facility | Type | Role | Since |
|---|---|---|---|
| Fair Oaks Health Care Center | Skilled nursing facility | Operational/Managerial Control Adp of the SNF |
Sep 1, 2025 Sep 1, 2025 |
Owned or controlled facilities with NPI records 1
Facilities whose Medicare enrollment lists this provider as an owner, officer, director or managing party.
-
- Skilled Nursing Facility
- Crystal Lake, IL
- NPI 1780673954
Adp of the SNF, Operational/Managerial Control
Organizations & group practices 6
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.
-
- Internal Medicine Physician
- Naperville, IL
- NPI 1417655465
-
dba MHS Physician Services
- Multi-Specialty Clinic/Center
- Janesville, WI
- NPI 1598718603
IL
-
dba Mercy Hospital Janesville
- General Acute Care Hospital
- Janesville, WI
- NPI 1093768962
-
dba Mercy Walworth Hospital and Medical Center
- Critical Access Hospital
- Lake Geneva, WI
- NPI 1699728550
-
- Multi-Specialty Clinic/Center
- Midland, MI
- NPI 1205889490
Family Medicine
-
- Anesthesiology Physician
- Midland, MI
- NPI 1649010455
Hospital & facility affiliations 4
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
dba Centegra Hospital McHenry
- General Acute Care Hospital
- McHenry, IL
- NPI 1982611281
-
- Home Health Agency
- Des Plaines, IL
- NPI 1649328824
-
- Skilled Nursing Facility
- Crystal Lake, IL
- NPI 1780673954
Nursing home
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1434499200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1790640000000",
"number": "1720469539",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "350 PELLER RD",
"city": "LAKE GENEVA",
"state": "WI",
"postal_code": "531474543",
"telephone_number": "262-249-0221",
"fax_number": "262-249-0633"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "350 PELLER RD",
"city": "LAKE GENEVA",
"state": "WI",
"postal_code": "531474543",
"telephone_number": "262-249-0221",
"fax_number": "262-249-0633"
}
],
"practiceLocations": [
{
"address_1": "4611 Campus Ridge",
"address_purpose": "LOCATION",
"city": "Midland",
"state": "MI",
"postal_code": "486706122",
"country_code": "US",
"telephone_number": "989-839-3500",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "839 N Wisconsin St",
"address_purpose": "LOCATION",
"city": "Elkhorn",
"state": "WI",
"postal_code": "531211138",
"country_code": "US",
"telephone_number": "262-741-1400",
"fax_number": "262-741-1401",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "SWEIS",
"first_name": "NADEEN",
"middle_name": "Z.",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2015-06-17",
"last_updated": "2026-09-29",
"certification_date": "2021-04-19",
"status": "A"
},
"taxonomies": [
{
"code": "207Q00000X",
"taxonomy_group": "",
"desc": "Family Medicine",
"state": "MI",
"license": "4301107823",
"primary": false
},
{
"code": "207Q00000X",
"taxonomy_group": "",
"desc": "Family Medicine",
"state": "WI",
"license": "70318-20",
"primary": true
}
],
"identifiers": [
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "WI MEDICARE",
"identifier": "K400603142",
"state": "WI"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "BCBSWI",
"identifier": "1720469539",
"state": "WI"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "MERCYCARE INSURANCE",
"identifier": "1765",
"state": "WI"
},
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "1720469539",
"state": "WI"
}
],
"endpoints": [],
"other_names": []
}
Other providers in Lake Geneva, WI
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 29, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; facility enrollments, owners and changes of ownership; Provider of Services certification data; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.