Emma Walls Greever, MD

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

125077404 Issued in IL

Practice address

251 E Huron St
Chicago, IL 60611-3055

Phone

(312) 926-2000

NPI assigned

Mar 25, 2021

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 6

Medicare fee-for-service enrollment

Enrolled in NY

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

Emergency Medicine

Education

Eastern Virginia Medical School, 2021

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Weill Medical College of CornellGroup PAC ID 6800709023, 2,023 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• New York-Presbyterian Hospital Hospital, New York, NY, CCN 330101

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• Weill Medical College of Cornell

  • Cardiovascular Disease Physician
  • New York, NY
  • NPI 1245355270
  Medicare reassignment Care Compare group NPD
• Weill Medical College of Cornell

  • Cardiovascular Disease Physician
  • New York, NY
  • NPI 1144729385
  NPD
• Weill Medical College of Cornell

  • Emergency Medicine Physician
  • New York, NY
  • NPI 1205882586
  NPD

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

• The New York and Presbyterian Hospital

  • General Acute Care Hospital
  • New York, NY
  • NPI 1144504044
  Care Compare affiliation
• The New York and Presbyterian Hospital

  • Ambulance
  • New York, NY
  • NPI 1174628473

  Hospital

  Care Compare affiliation
• The New York and Presbyterian Hospital

  • General Acute Care Hospital
  • New York, NY
  • NPI 1194832477
  Care Compare affiliation
• The New York and Presbyterian Hospital

  • General Acute Care Hospital
  • Bronxville, NY
  • NPI 1780196345
  Care Compare affiliation
• The New York and Presbyterian Hospital

  • General Acute Care Hospital
  • New York, NY
  • NPI 1952332801
  Care Compare affiliation

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

{
    "created_epoch": "1616630400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1747094400000",
    "number": "1003493040",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "251 E HURON ST",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606113055",
            "telephone_number": "312-926-2000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "251 E HURON ST",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606113055",
            "telephone_number": "312-926-2000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GREEVER",
        "first_name": "EMMA",
        "middle_name": "WALLS",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2021-03-25",
        "last_updated": "2025-05-13",
        "certification_date": "2025-05-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "IL",
            "license": "125077404",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/DSTU2/",
            "affiliation": "N",
            "endpointDescription": "FHIR",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "FHIR",
            "address_1": "525 E 68th St",
            "city": "New York",
            "state": "NY",
            "country_code": "US",
            "postal_code": "100654870",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/R4/",
            "affiliation": "N",
            "endpointDescription": "FHIR",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "FHIR",
            "address_1": "525 E 68th St",
            "city": "New York",
            "state": "NY",
            "country_code": "US",
            "postal_code": "100654870",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "emg4014@direct.nyp.org",
            "affiliation": "N",
            "endpointDescription": "Direct Address",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "Direct Address",
            "address_1": "251 E Huron St",
            "city": "Chicago",
            "state": "IL",
            "country_code": "US",
            "postal_code": "606113055",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/DSTU2/",
            "affiliation": "N",
            "endpointDescription": "FHIR",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "FHIR",
            "address_1": "525 E 68th St",
            "city": "New York",
            "state": "NY",
            "country_code": "US",
            "postal_code": "100654870",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "emg4014@direct.nyp.org",
            "affiliation": "N",
            "endpointDescription": "Direct Address",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "Direct Address",
            "address_1": "525 E 68th St",
            "city": "New York",
            "state": "NY",
            "country_code": "US",
            "postal_code": "100654870",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/R4/",
            "affiliation": "N",
            "endpointDescription": "FHIR",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "FHIR",
            "address_1": "525 E 68th St",
            "city": "New York",
            "state": "NY",
            "country_code": "US",
            "postal_code": "100654870",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Haley Barbara Greer
• Luella Greer
• Margot Elizabeth Greer
• Sarah Ashley Greer, LCPC
• Solomon Greer, MD
• Greeves PLLC
• Greg D Ewert MD SC
• Greg S. Cohen, MD, LLC
• Greta Gregg
• Willa Gregg, PTA

• Emergency Medicine Physician in Chicago, IL
• Providers in Chicago, IL by specialty
• Emergency Medicine Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 13, 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.