Active NPI
Rajeev Nayar, MD
- Gastroenterology Physician
- Milwaukee, WI
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Gastroenterology Physician
- License
- 39631-020
- Practice address
- 2801 W KK River Pkwy
Suite 1030
Milwaukee, WI 53215-3669 - Phone
- (414) 908-6500
- Fax
- (414) 385-2980
- NPI assigned
- Mar 2, 2006
- Sex
- Male
- 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 |
|---|---|---|---|---|
| Gastroenterology Physician | 207RG0100X | 036096635 | IL | |
| Gastroenterology Physician | 207RG0100X | 39631-020 | WI | Primary |
Addresses
Primary practice location
2801 W KK River Pkwy
Suite 1030
Milwaukee, WI 53215-3669
Mailing address
3033 S 27TH St Ste 202
Milwaukee, WI 53215-3600
Phone (414) 908-6601
Other practice location 1
800 N Westmoreland Rd Ste 100
Lake Forest, IL 60045-1671
Phone (847) 535-6083
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 32432500 | 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
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20130612000249 | IL | Practitioner - Gastroenterology | 1658365242 | Reassigns benefits to 4 organizations |
Care Compare profile
Medicare Care Compare- Specialty
- Gastroenterology
- Education
- Other, 1982
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
- David C Chua MDSC LTDNorthwestern Medical Faculty Foundation
Practice addresses (Care Compare)
3740 W N Ave
Chicago, IL 60647-4727
Phone (630) 889-9889
800 N Westmoreland Rd
Suite 100
Lake Forest, IL 60045-1671
Phone (847) 535-8174
Hospital & facility affiliations
- Northwestern Lake Forest Hospital
- Presence Saints Mary and Elizabeth Medical Center
- Humboldt Park Health
- Northwestern Memorial Hospital
Merit-based Incentive Payment System (MIPS)
- Final score
- 100 of 100
- Quality
- 98.8
- Promoting interoperability
- 95
- Improvement activities
- 40
- Cost
- 79.36
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Colonoscopy | 105 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 117 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 39631-020 | WI | MD | Gastroenterology Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Northwestern Medical Faculty Foundation | Current | Accepting new patients | |
| City of Hope Medical Group of Illinois PLLC | Current | Accepting new patients | |
| Gi Associates LLC | Gastroenterology | Current | Accepting new patients |
| David C Chua, MD SC LTD | Gastroenterology | Current | Accepting new patients |
| Northwestern Medical Faculty Foundation | Current | Accepting new patients | |
| Humboldt Park Health | Current | Accepting new patients | |
| Central Dupage Physician Group | Past | Accepting new patients | |
| Illinois Gastroenterology and Hepatology | Gastroenterology | Past | Accepting new patients |
| Center for Digestive Health LTD | Past | Accepting new patients | |
| Mayfair Digestive Health Center, LLC | Past | Accepting new patients |
Locations
Dept 5777
Carol Stream, IL 60122
1044 N Francisco Ave
Chicago, IL 60622
Phone (773) 292-8227
3740 W North Ave
Chicago, IL 60647
Phone (773) 687-8536
1044 N Mozart St
Ste 100
Chicago, IL 60622
Phone (773) 292-8247
1044 N Mozart St
Ste 502
Chicago, IL 60622
Phone (773) 251-9786
2361 Paysphere Cir
Chicago, IL 60674
Phone (847) 746-4358
1475 E Belvidere Rd
Ste 311
Grayslake, IL 60030
Phone (847) 535-6083
800 N Westmoreland Rd
Ste 100
Lake Forest, IL 60045
Phone (847) 535-6083
660 N Westmoreland Rd
#302
Lake Forest, IL 60045
1S280 Summit Ave
#A
Oakbrook Terrace, IL 60181
1S280 Summit Ave
Ste A1
Oakbrook Terrace, IL 60181
Phone (773) 320-7307
2520 Elisha Ave
Zion, IL 60099
Phone (800) 322-9183
19333 W North Ave
Brookfield, WI 53045
Phone (262) 785-2000
2801 W Kinnickinnic River Pkwy
Ste 1080
Milwaukee, WI 53215
Phone (414) 908-6506
3033 S 27th St
Ste 202
Milwaukee, WI 53215
2801 W KK Pkwy
Ste 1030
Milwaukee, WI 53215
3801 Spring St
Mount Pleasant, WI 53405
Phone (262) 636-4011
125 Hospital Dr
Watertown, WI 53098
Phone (920) 261-4210
Interoperability endpoints
- rnayar145261@cityofhope.direct-ci.com
Organizations & group practices 23
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Gastroenterology Physician
- Oakbrook Terrace, IL
- NPI 1225210214
Gastroenterology, IL
-
- Multi-Specialty Clinic/Center
- Carol Stream, IL
- NPI 1346235314
IL
-
- Durable Medical Equipment & Medical Supplies
- Chicago, IL
- NPI 1417718479
-
- Durable Medical Equipment & Medical Supplies
- Evanston, IL
- NPI 1124733019
-
- Durable Medical Equipment & Medical Supplies
- Chicago, IL
- NPI 1275759789
-
- Durable Medical Equipment & Medical Supplies
- Glenview, IL
- NPI 1316590409
-
- Durable Medical Equipment & Medical Supplies
- Chicago, IL
- NPI 1376961524
-
- Eyewear Supplier
- Evanston, IL
- NPI 1427741909
-
- Durable Medical Equipment & Medical Supplies
- Lake Forest, IL
- NPI 1467005520
-
- Durable Medical Equipment & Medical Supplies
- Chicago, IL
- NPI 1497308340
Hospital & facility affiliations 4
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Lake Forest, IL
- NPI 1124025176
Hospital
-
- General Acute Care Hospital
- Chicago, IL
- NPI 1265270607
Hospital
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1141257600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1763424000000",
"number": "1346217023",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "3033 S 27TH ST STE 202",
"city": "MILWAUKEE",
"state": "WI",
"postal_code": "532153600",
"telephone_number": "414-908-6601",
"fax_number": "414-385-2980"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "2801 W KK RIVER PKWY",
"address_2": "SUITE 1030",
"city": "MILWAUKEE",
"state": "WI",
"postal_code": "532153669",
"telephone_number": "414-908-6500",
"fax_number": "414-385-2980"
}
],
"practiceLocations": [
{
"address_1": "800 N Westmoreland Rd Ste 100",
"address_purpose": "LOCATION",
"city": "Lake Forest",
"state": "IL",
"postal_code": "600451671",
"country_code": "US",
"telephone_number": "847-535-6083",
"fax_number": "847-234-4336",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "NAYAR",
"first_name": "RAJEEV",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-03-02",
"last_updated": "2025-11-18",
"certification_date": "2025-11-18",
"status": "A"
},
"taxonomies": [
{
"code": "207RG0100X",
"taxonomy_group": "",
"desc": "Internal Medicine, Gastroenterology",
"state": "IL",
"license": "036096635",
"primary": false
},
{
"code": "207RG0100X",
"taxonomy_group": "",
"desc": "Internal Medicine, Gastroenterology",
"state": "WI",
"license": "39631-020",
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "32432500",
"state": "WI"
}
],
"endpoints": [],
"other_names": []
}
Other providers in Milwaukee, WI
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 18, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; 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.