Erin Rantz Hauck, M.D.

Primary specialty

Hospitalist PhysicianTaxonomy code 208M00000X

License

200688 Issued in LA

Practice address

8300 Constantin Blvd
Baton Rouge, LA 70809-3489

Phone

(225) 374-5437

Fax

(225) 374-1626

NPI assigned

Aug 6, 2007

Sex

Female

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Other identifiers 2

Other names 1

• Erin Elisabeth Rantz Former name

Electronic endpoints 2

Medicare fee-for-service enrollment

Enrolled in LA

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Interoperability endpoints

• FHIR API: https://epicproxy.et0830.epichosted.com/FHIRProxy/api/FHIR/R4/

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.

• Our Lady of the Lake Physician Group LLC

  • Internal Medicine Physician
  • Baton Rouge, LA
  • NPI 1033494943
  Medicare reassignment
• Our Lady of the Lake Hospital Inc.

  • General Acute Care Hospital
  • Baton Rouge, LA
  • NPI 1366436123
  NPD (past)

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

{
    "created_epoch": "1186358400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784160000000",
    "number": "1053502872",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "8200 CONSTANTIN BLVD STE 200",
            "city": "BATON ROUGE",
            "state": "LA",
            "postal_code": "708093481",
            "telephone_number": "225-709-8633",
            "fax_number": "225-709-8634"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "8300 CONSTANTIN BLVD",
            "city": "BATON ROUGE",
            "state": "LA",
            "postal_code": "708093489",
            "telephone_number": "225-374-5437",
            "fax_number": "225-374-1626"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HAUCK",
        "first_name": "ERIN",
        "middle_name": "RANTZ",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2007-08-06",
        "last_updated": "2026-07-16",
        "certification_date": "2026-07-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "LA",
            "license": "200688",
            "primary": false
        },
        {
            "code": "2080P0203X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Critical Care Medicine",
            "state": "LA",
            "license": "200688",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "LA",
            "license": "200688",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICAL LICENSE",
            "identifier": "200688",
            "state": "LA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1073822",
            "state": "LA"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "ehauck15031@direct.casso.us.com",
            "affiliation": "N",
            "endpointDescription": "FMOLHS-Epic",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "ehauck15031@direct.casso.us.com",
            "address_1": "8300 Constantin Blvd",
            "city": "Baton Rouge",
            "state": "LA",
            "country_code": "US",
            "postal_code": "708093489",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy.et0830.epichosted.com/FHIRProxy/api/FHIR/DSTU2/",
            "affiliation": "N",
            "endpointDescription": "FMOLHS FHIR URL",
            "use": "OTHER",
            "useDescription": "Other",
            "useOtherDescription": "FHIR API",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "C-CDA",
            "address_1": "8300 Constantin Blvd",
            "city": "Baton Rouge",
            "state": "LA",
            "country_code": "US",
            "postal_code": "708093489",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": [
        {
            "first_name": "ERIN",
            "last_name": "RANTZ",
            "middle_name": "ELISABETH",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

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• Hospitalist Physician in Baton Rouge, LA
• Providers in Baton Rouge, LA by specialty
• Hospitalist Physician in Louisiana

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 16, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.