Mary Faith C. Terkildsen, MD

Primary specialty

Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X

License

036103018 Issued in IL

Practice address

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

Phone

(847) 234-3250

Fax

(847) 234-7765

NPI assigned

Jul 26, 2006

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

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

Obstetrics/Gynecology

Education

Tulane University School of Medicine, 1998

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

OB-Gyne Associates of Lake Forest LTDGroup PAC ID 2769474568, 8 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Northshore University Healthsystem - Evanston Hospital Hospital, Evanston, IL, CCN 140010

Merit-based Incentive Payment System (MIPS)

Final score

84.9 of 100Reported as group

Quality

75.91

Promoting interoperability

99

Improvement activities

40

Cost

74.6

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mterkildsen16921@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

  • Emergency Medicine Physician
  • Evanston, IL
  • NPI 1497701882

  Obstetrics & Gynecology

  Medicare reassignment Care Compare group NPD
• OB-Gyne Associates of Lake Forest, LTD.

  • Specialist
  • Lake Forest, IL
  • NPI 1417093808
  Medicare reassignment Care Compare group NPD
• Endeavor Health Medical Group

  • Anesthesiology Physician
  • Evanston, IL
  • NPI 1265695944
  NPD
• Pediatrust, L.L.C.

  • Pediatrics Physician
  • Lake Forest, IL
  • NPI 1982958013
  NPD (past)

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

• Endeavor Health Clinical Operations

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

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

{
    "created_epoch": "1153872000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778112000000",
    "number": "1407870199",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "959 S WAUKEGAN RD FL 2",
            "city": "LAKE FOREST",
            "state": "IL",
            "postal_code": "600452654",
            "telephone_number": "847-234-3250",
            "fax_number": "847-234-7765"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "959 S WAUKEGAN RD FL 2",
            "city": "LAKE FOREST",
            "state": "IL",
            "postal_code": "600452654",
            "telephone_number": "847-234-3250",
            "fax_number": "847-234-7765"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TERKILDSEN",
        "first_name": "MARY FAITH",
        "middle_name": "C.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-07-26",
        "last_updated": "2026-05-07",
        "certification_date": "2026-05-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "IL",
            "license": "036103018",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "mterkildsen16921@direct.northshore.org",
            "affiliation": "N",
            "address_1": "225 N Milwaukee Ave",
            "city": "Vernon Hills",
            "state": "IL",
            "country_code": "US",
            "postal_code": "600614304",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Maureen Tart, M.D.
• Julianna Taylor, FNP-C
• Kristyn Taylor, DPT
• Jennifer Tepper, CNS
• Joshua A Tepper, M.D.
• Michael W Terkildsen, M.D.
• Anthony Paul Terrasse, M.D.
• Chad Michael Teven, M.D.
• TFM Services, LLC
• Roopal B Thakkar, M.D.

• Obstetrics & Gynecology Physician in Lake Forest, IL
• Providers in Lake Forest, IL by specialty
• Obstetrics & Gynecology Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 7, 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.