Individual provider Active NPI

Rajeev Nayar, MD

  • Gastroenterology Physician
  • Milwaukee, WI
National Provider Identifier
1346217023
Registry record updated Nov 18, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Gastroenterology PhysicianTaxonomy code 207RG0100X
License
39631-020 Issued in WI
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

Updated by the provider on Nov 18, 2025

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
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

IdentifierTypeStateIssuer
32432500MedicaidWI

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
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
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 LTD 2 clinicians
Northwestern Medical Faculty Foundation 4,386 clinicians

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 Hospital, Lake Forest, IL, CCN 140130
  • Presence Saints Mary and Elizabeth Medical Center Hospital, Chicago, IL, CCN 140180
  • Humboldt Park Health Hospital, Chicago, IL, CCN 140206
  • Northwestern Memorial Hospital Hospital, Chicago, IL, CCN 140281

Merit-based Incentive Payment System (MIPS)

Final score
100 of 100Reported as group
Quality
98.8
Promoting interoperability
95
Improvement activities
40
Cost
79.36

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy105
Upper gastrointestinal (GI) endoscopy for acid reflux117

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
39631-020WIMDGastroenterology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Northwestern Medical Faculty Foundation CurrentSince Dec 1, 2025 Accepting new patients
City of Hope Medical Group of Illinois PLLC CurrentSince May 1, 2013 Accepting new patients
Gi Associates LLC Gastroenterology Current Accepting new patients
David C Chua, MD SC LTD Gastroenterology CurrentSince Jul 10, 2017 Accepting new patients
Northwestern Medical Faculty Foundation CurrentSince Dec 1, 2025 Accepting new patients
Humboldt Park Health CurrentSince May 1, 2025 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 PastSince Nov 24, 2025 Accepting new patients
Mayfair Digestive Health Center, LLC PastSince Nov 24, 2025 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

  • Direct secure messaging: 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.

View all 23

Hospital & facility affiliations 4

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

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

Verify at the official NPI Registry.