Natalie S Opanasets, M.D.

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

036123887 Issued in IL

Practice address

4111 Franklin St
Michigan City, IN 46360-7803

Phone

(219) 873-2919

Fax

(219) 873-2909

NPI assigned

Apr 7, 2008

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in IL, IN2 enrollments

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 2

Specialty

Family Practice

Education

Other, 1998

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

University of ChicagoGroup PAC ID 7719899426, shared by 2 NPIs, 1,674 clinicians

Franciscan Physician NetworkGroup PAC ID 3072790682, 1,152 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• The University of Chicago Medical Center Hospital, Chicago, IL, CCN 140088
• Franciscan Health Munster Hospital, Munster, IN, CCN 150165

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Not enrolled

HHS exclusion list flag

Flagged The directory lists this NPI on an HHS exclusion list. The OIG exclusions file (LEIE) holds no record for this NPI, and the directory does not say which list the flag comes from. How exclusions are shown Confirm with the OIG exclusions search.

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: natalie.opanasets.1@2340.direct.athenahealth.com
• Direct secure messaging: nopanasets335852@uchospital.direct-ci.com

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.

• Franciscan Physician Network

  • Family Medicine Physician
  • Indianapolis, IN
  • NPI 1225327984
  Medicare reassignment Care Compare group NPD
• La Porte Clinic Company LLC

  • Internal Medicine Physician
  • Valparaiso, IN
  • NPI 1568829224

  Family Medicine

  Medicare reassignment NPD
• Porter Physician Services LLC

  • Family Medicine Physician
  • Valparaiso, IN
  • NPI 1508075680
  Medicare reassignment NPD
• The University of Chicago Medical Center

  • General Acute Care Hospital
  • Chicago, IL
  • NPI 1033218128
  Medicare reassignment NPD
• University of Chicago

  • Urgent Care Clinic/Center
  • Chicago, IL
  • NPI 1477262046
  Medicare reassignment NPD
• University of Chicago

  • Multi-Specialty Clinic/Center
  • Chicago, IL
  • NPI 1821048786

  IN

  Medicare reassignment NPD
• Franciscan Physician Network

  • Urgent Care Clinic/Center
  • Mishawaka, IN
  • NPI 1366879009
  NPD
• Franciscan Physician Network

  • Clinic/Center
  • Lafayette, IN
  • NPI 1992543250
  NPD
• La Porte Clinic Company LLC

  • Durable Medical Equipment & Medical Supplies
  • La Porte, IN
  • NPI 1275081788
  NPD
• The University of Chicago Medical Center

  • Community/Retail Pharmacy
  • Calumet City, IL
  • NPI 1255895678
  NPD
• Porter Physician Services LLC

  • Internal Medicine Physician
  • Portage, IN
  • NPI 1457566309

  Family Medicine

  NPD (past)

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

• Franciscan Health Munster

  • General Acute Care Hospital
  • Munster, IN
  • NPI 1427493246
  Care Compare affiliation
• The University of Chicago Medical Center

  • General Acute Care Hospital
  • Chicago, IL
  • NPI 1508956509
  Care Compare affiliation

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

{
    "created_epoch": "1207526400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1741910400000",
    "number": "1366615833",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "150 HARVESTER DR STE 300",
            "city": "BURR RIDGE",
            "state": "IL",
            "postal_code": "605275965"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4111 FRANKLIN ST",
            "city": "MICHIGAN CITY",
            "state": "IN",
            "postal_code": "463607803",
            "telephone_number": "219-873-2919",
            "fax_number": "219-873-2909"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3630 Willowcreek Rd",
            "address_purpose": "LOCATION",
            "city": "Portage",
            "state": "IN",
            "postal_code": "463685075",
            "country_code": "US",
            "telephone_number": "219-364-3900",
            "fax_number": "219-364-3595",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "650 Dickinson Rd",
            "address_purpose": "LOCATION",
            "city": "Chesterton",
            "state": "IN",
            "postal_code": "463043387",
            "country_code": "US",
            "telephone_number": "219-926-7755",
            "fax_number": "219-929-1885",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3777 N Frontage Rd Ste 500",
            "address_purpose": "LOCATION",
            "city": "Michigan City",
            "state": "IN",
            "postal_code": "463607697",
            "country_code": "US",
            "telephone_number": "219-809-2889",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "401 NewPorte Blvd",
            "address_purpose": "LOCATION",
            "city": "La Porte",
            "state": "IN",
            "postal_code": "463504099",
            "country_code": "US",
            "telephone_number": "219-575-6244",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "809 LaPorte Ave Ste B",
            "address_purpose": "LOCATION",
            "city": "Valparaiso",
            "state": "IN",
            "postal_code": "463835801",
            "country_code": "US",
            "telephone_number": "219-263-4977",
            "fax_number": "219-263-4979",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "47 W Polk St Ste G1",
            "address_purpose": "LOCATION",
            "city": "Chicago",
            "state": "IL",
            "postal_code": "606052083",
            "country_code": "US",
            "telephone_number": "888-824-0200",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "5841 S Maryland Ave",
            "address_purpose": "LOCATION",
            "city": "Chicago",
            "state": "IL",
            "postal_code": "606371443",
            "country_code": "US",
            "telephone_number": "888-824-0200",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "OPANASETS",
        "first_name": "NATALIE",
        "middle_name": "S",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2008-04-07",
        "last_updated": "2025-03-14",
        "certification_date": "2025-03-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "IN",
            "license": "01069068A",
            "primary": false
        },
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "IL",
            "license": "036123887",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "natalie.opanasets.1@2340.direct.athenahealth.com",
            "affiliation": "N",
            "endpointDescription": "AMR direct address",
            "address_1": "650 Dickinson Rd",
            "city": "Chesterton",
            "state": "IN",
            "country_code": "US",
            "postal_code": "463043387",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

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• Family Medicine Physician in Michigan City, IN
• Providers in Michigan City, IN by specialty
• Family Medicine Physician in Indiana

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 14, 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.

Verify at the official NPI Registry.