Michael Jon Sommerfeld, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

036105987 Issued in IL

Practice address

915 S Waukegan Rd Ste 200
Lake Forest, IL 60045-2654

Phone

(224) 516-4108

Fax

(224) 516-4116

NPI assigned

Nov 30, 2005

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 1

Electronic endpoints 1

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

Specialty

Internal Medicine

Education

R Franklin University of Med & Sci/Chicago Medical School, 1999

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Endeavor Health Medical GroupGroup PAC ID 2163334699, 3,330 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Northshore University Healthsystem - Evanston Hospital Hospital, Evanston, IL, CCN 140010
• Northwestern Lake Forest Hospital Hospital, Lake Forest, IL, CCN 140130
• Swedish Hospital Hospital, Chicago, IL, CCN 140114

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: msommerfeld16900@direct.northshore.org

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.

• Endeavor Health Medical Group

  dba NorthShore University HealthSystem Faculty Practice Associates

  • Emergency Medicine Physician
  • Evanston, IL
  • NPI 1497701882

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Endeavor Health Medical Group

  dba NorthShore Anesthesia Group

  • Anesthesiology Physician
  • Evanston, IL
  • NPI 1265695944
  NPD

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

• Endeavor Health Clinical Operations

  dba Endeavor Health Evanston Hospital

  • General Acute Care Hospital
  • Evanston, IL
  • NPI 1184670549
  Care Compare affiliation
• Northwestern Lake Forest Hospital

  dba Northwestern Medicine Lake Forest Hospital

  • General Acute Care Hospital
  • Lake Forest, IL
  • NPI 1124025176
  Care Compare affiliation
• Swedish Covenant Health

  dba Endeavor Health Swedish Hospital

  • General Acute Care Hospital
  • Chicago, IL
  • NPI 1831151257
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1133308800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781654400000",
    "number": "1578547063",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2650 RIDGE AVE STE 1223",
            "city": "EVANSTON",
            "state": "IL",
            "postal_code": "602011700",
            "telephone_number": "224-516-4108",
            "fax_number": "224-516-4116"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "915 S WAUKEGAN RD STE 200",
            "city": "LAKE FOREST",
            "state": "IL",
            "postal_code": "600452654",
            "telephone_number": "224-516-4108",
            "fax_number": "224-516-4116"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SOMMERFELD",
        "first_name": "MICHAEL",
        "middle_name": "JON",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-11-30",
        "last_updated": "2026-06-17",
        "certification_date": "2026-06-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": "036105987",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "036105987",
            "state": "IL"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "msommerfeld16900@direct.northshore.org",
            "affiliation": "N",
            "address_1": "800 N Westmoreland Rd",
            "address_2": "SUITE 100",
            "city": "Lake Forest",
            "state": "IL",
            "country_code": "US",
            "postal_code": "600451673",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Jeremy Smith
• Steven Daniel Smith, P.T.
• Colleen Marie Smyrniotis, APN
• Kim R Sobinsky, M.D.
• Christine Marie Somberg, ACNS-BC
• Lillian Soong
• Craig Sopko, MD
• Alison L Soppe, PT
• Eric L Soto, DPT
• Richard Douglas Southgate, M.D.

• Internal Medicine Physician in Lake Forest, IL
• Providers in Lake Forest, IL by specialty
• Internal Medicine Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 17, 2026; 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.

Verify at the official NPI Registry.