Individual provider Active NPI

Marissa Jane Versalle, DO

  • Internal Medicine Physician
  • Lake Forest, IL
National Provider Identifier
1669891107
Registry record updated Jan 12, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
036146901 Issued in IL
Practice address
990 S Waukegan Rd FL 2
Lake Forest, IL 60045-2654
Phone
(847) 861-0025
Fax
(847) 861-0026
NPI assigned
Apr 14, 2014
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 12, 2026

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

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Hospitalist Physician 208M00000X 036.146901 IL
Hospitalist Physician 208M00000X 34.012714 OH
Internal Medicine Physician 207R00000X 036146901 IL Primary
Student in an Organized Health Care Education/Training Program 390200000X

Addresses

Primary practice location

990 S Waukegan Rd FL 2
Lake Forest, IL 60045-2654

Mailing address

990 S Waukegan Rd Ste 200
Lake Forest, IL 60045-2654
Phone (847) 234-8100

Other practice location 1

1000 N Westmoreland Rd
Lake Forest, IL 60045
Phone (847) 234-5600

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
I20180828000696 IL Practitioner - HospitalistPractitioner - Internal Medicine 3476855560 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
HospitalistAlso: Internal Medicine
Education
Lake Erie College of Osteopathic Medicine, Erie, 2014
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Northwestern Medical Faculty FoundationGroup PAC ID 4587576814, 4,386 clinicians
Forward Focus Medical Care LLCGroup PAC ID 2961402482, 10 clinicians

Practice addresses (Care Compare)

1000 N Westmoreland Rd
Lake Forest, IL 60045-1658
Phone (847) 234-5600

990 S Waukegan Rd
Suite 200
Lake Forest, IL 60045-2655
Phone (847) 234-8100

Hospital & facility affiliations

  • Northwestern Lake Forest Hospital Hospital, Lake Forest, IL, CCN 140130
  • Northshore University Healthsystem - Evanston Hospital Hospital, Evanston, IL, CCN 140010
  • Northwestern Memorial Hospital Hospital, Chicago, IL, CCN 140281

Merit-based Incentive Payment System (MIPS)

Final score
95.19 of 100Reported as apm
Quality
83.05
Promoting interoperability
100
Improvement activities
40

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
036.146901ILMDHospitalist Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Northwestern Medical Faculty Foundation CurrentSince Sep 1, 2018 Accepting new patients
Northwestern Medical Faculty Foundation CurrentSince Sep 1, 2018 Accepting new patients

Locations

Dept 5777
Carol Stream, IL 60122

Carol Stream, IL 60122
Phone (630) 933-3300

680 N Lake Shore Dr
Ste 1000
Chicago, IL 60611
Phone (312) 695-4022

1000 N Westmoreland Rd
Lake Forest, IL 60045
Phone (847) 535-6150

900 N Westmoreland Rd
Ste 104
Lake Forest, IL 60045
Phone (847) 234-5094

660 N Westmoreland Rd
#302
Lake Forest, IL 60045

515 Valley View Dr
Ste 201
Moline, IL 61265
Phone (312) 695-0870

Organizations & group practices 3

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.

Hospital & facility affiliations 3

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": "1397433600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768176000000",
    "number": "1669891107",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "990 S WAUKEGAN RD STE 200",
            "city": "LAKE FOREST",
            "state": "IL",
            "postal_code": "600452654",
            "telephone_number": "847-234-8100",
            "fax_number": "847-234-8199"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "990 S WAUKEGAN RD FL 2",
            "city": "LAKE FOREST",
            "state": "IL",
            "postal_code": "600452654",
            "telephone_number": "847-861-0025",
            "fax_number": "847-861-0026"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1000 N Westmoreland Rd",
            "address_purpose": "LOCATION",
            "city": "Lake Forest",
            "state": "IL",
            "postal_code": "60045",
            "country_code": "US",
            "telephone_number": "847-234-5600",
            "fax_number": "847-535-7203",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "VERSALLE",
        "first_name": "MARISSA",
        "middle_name": "JANE",
        "name_prefix": "Dr.",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2014-04-14",
        "last_updated": "2026-01-12",
        "certification_date": "2026-01-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "IL",
            "license": "036.146901",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "OH",
            "license": "34.012714",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": "036146901",
            "primary": true
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Lake Forest, IL

Sources for this page

Verify at the official NPI Registry.