Sara Helen Hammer, DO

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

036-164028 Issued in IL

Practice address

3936 N Milwaukee Ave
Chicago, IL 60641-2703

Phone

(773) 736-6125

NPI assigned

Mar 31, 2020

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 2

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

Family Practice

Education

Midwestern University, Chicago College of Osteopathic Med, 2020

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Advocate Health and Hospitals CorporationGroup PAC ID 7810800935, 3,081 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Advocate Illinois Masonic Medical Center Hospital, Chicago, IL, CCN 140182

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: shammer264611@direct.myadvocateaurora.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.

• Advocate Health and Hospitals Corporation

  • Multi-Specialty Clinic/Center
  • Oak Brook, IL
  • NPI 1700824455
  Medicare reassignment Care Compare group NPD
• Advocate Health and Hospitals Corporation

  • Children's Hospital
  • Oak Lawn, IL
  • NPI 1508315516
  NPD

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

• Advocate North Side Health Network

  • General Acute Care Hospital
  • Chicago, IL
  • NPI 1912014564
  Care Compare affiliation

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

{
    "created_epoch": "1585612800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1759104000000",
    "number": "1144858457",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "29373 NETWORK PL",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606731293"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3936 N MILWAUKEE AVE",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606412703",
            "telephone_number": "773-736-6125"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "836 W Wellington Ave",
            "address_purpose": "LOCATION",
            "city": "Chicago",
            "state": "IL",
            "postal_code": "606575147",
            "country_code": "US",
            "telephone_number": "773-975-1600",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HAMMER",
        "first_name": "SARA",
        "middle_name": "HELEN",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2020-03-31",
        "last_updated": "2025-09-29",
        "certification_date": "2025-09-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "IL",
            "license": "036-164028",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "3936 N Milwaukee Ave",
            "city": "Chicago",
            "state": "IL",
            "country_code": "US",
            "postal_code": "606412703",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "shammer264611@direct.myadvocateaurora.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "3936 N Milwaukee Ave",
            "city": "Chicago",
            "state": "IL",
            "country_code": "US",
            "postal_code": "606412703",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Cheryl M Hammelmann, PHARMD
• Ava Hammer, LPC-INTERN
• Jessica Lynn Hammer, M.A., CCC-SLP/L
• Karissa C Hammer, M.D.
• Megan Hammer, PSY.D.
• Sarah Hammer, LCSW, PEL
• Zachary Hammer, MD
• Kim W Hammerberg, M.D.
• Jay L Hammerman, RPH
• Margaret M Hammerschmidt, PT,DPT

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

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 29, 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.