Dagan Hammar, MD

Primary specialty

Hospitalist PhysicianTaxonomy code 208M00000X

License

068209 Issued in CO

Practice address

25 N Winfield Rd
Winfield, IL 60190-1379

Phone

(630) 933-4700

Fax

(630) 933-4427

NPI assigned

Apr 1, 2019

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

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

Hospitalist

Education

Western Michigan Un Homer Stryker School of Med, 2019

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Central Dupage Physician GroupGroup PAC ID 5890696231, 1,087 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Northwestern Medicine Central Dupage Hospital Hospital, Winfield, IL, CCN 140242
• Northwestern Memorial Hospital Hospital, Chicago, IL, CCN 140281
• Northwestern Medicine Delnor Community Hospital Hospital, Geneva, IL, CCN 140211

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.

• Central Dupage Physician Group

  • Family Medicine Physician
  • Carol Stream, IL
  • NPI 1033149844

  Hospitalist

  Medicare reassignment Care Compare group NPD
• Central Dupage Physician Group

  • Orthopaedic Surgery Physician
  • Geneva, IL
  • NPI 1780012344
  NPD
• University Physicians Incorporated

  • Internal Medicine Physician
  • Aurora, CO
  • NPI 1962461889
  NPD
• University of Colorado Hospital Authority

  • General Acute Care Hospital
  • Aurora, CO
  • NPI 1477531580
  NPD (past)

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

• Central Dupage Hospital Association

  • General Acute Care Hospital
  • Winfield, IL
  • NPI 1003864810
  Care Compare affiliation
• Central Dupage Hospital Association

  • Psychiatric Hospital Unit
  • Winfield, IL
  • NPI 1740230895
  Care Compare affiliation
• Delnor Community Hospital

  • General Acute Care Hospital
  • Geneva, IL
  • NPI 1407859655
  Care Compare affiliation
• Northwestern Memorial Hospital

  • General Acute Care Hospital
  • Chicago, IL
  • NPI 1497859649
  Care Compare affiliation

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

{
    "created_epoch": "1554076800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1743033600000",
    "number": "1194287151",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "25 N WINFIELD RD",
            "city": "WINFIELD",
            "state": "IL",
            "postal_code": "601901379",
            "telephone_number": "630-933-4700",
            "fax_number": "630-933-4427"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "25 N WINFIELD RD",
            "city": "WINFIELD",
            "state": "IL",
            "postal_code": "601901379",
            "telephone_number": "630-933-4700",
            "fax_number": "630-933-4427"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "12605 E 16th Ave",
            "address_purpose": "LOCATION",
            "city": "Aurora",
            "state": "CO",
            "postal_code": "800452545",
            "country_code": "US",
            "telephone_number": "720-848-0000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HAMMAR",
        "first_name": "DAGAN",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-04-01",
        "last_updated": "2025-03-27",
        "certification_date": "2025-03-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "CO",
            "license": "068209",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Laura L Guzman, NP, CNRN
• Maricela Guzman
• Arie Leigh Habis, M.D.
• Danish Haider
• Sarah E Hale, MD
• Linda Ann Hammond
• Elizabeth Stewart Hanna
• Mark P Hanna, DO
• Terri J Hannemann, MSN, FNP-C
• John J Hardek, M.D.

• Hospitalist Physician in Winfield, IL
• Providers in Winfield, IL by specialty
• Hospitalist Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 27, 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.