Esther Alimboyao Sy, MD

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

036097622 Issued in IL

Practice address

3401 N Perryville Rd
Rockford, IL 61114-8011

Phone

(815) 971-2000

Fax

(815) 971-9570

NPI assigned

Dec 29, 2005

Last updated

Apr 22, 2026By the provider in NPPES

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

Other identifiers 2

Electronic endpoints 1

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

Other, 1989

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Rockford Health PhysiciansGroup PAC ID 2567374036, 520 clinicians

Swedishamerican HospitalGroup PAC ID 5799698346, 386 clinicians

Saint Anthony Medical CenterGroup PAC ID 5496654006, 45 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Uw Health Hospital, Rockford, IL, CCN 140228
• Saint Anthony Medical Center Hospital, Rockford, IL, CCN 140233

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: esy913937@direct.uwhealth.org

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Rockford Health Physicians

  dba Mercyhealth Physicians

  • Multi-Specialty Clinic/Center
  • Rockford, IL
  • NPI 1043242886
  Medicare reassignment Care Compare group NPD
• Saint Anthony Medical Center

  dba OSF Saint Anthony Medical Center

  • Hematology & Oncology Physician
  • Rockford, IL
  • NPI 1942248802
  Medicare reassignment Care Compare group NPD
• Swedishamerican Hospital

  dba SwedishAmerican Medical Group

  • Family Medicine Physician
  • Rockford, IL
  • NPI 1962451732
  Medicare reassignment Care Compare group NPD
• Osf Multi-Specialty Group

  • Internal Medicine Physician
  • Peoria, IL
  • NPI 1922445527
  Medicare reassignment NPD
• RMH Pathologists, LTD

  • Anatomic Pathology Physician
  • Rockford, IL
  • NPI 1184671992
  NPD
• Swedishamerican Hospital

  • Community/Retail Pharmacy
  • Rockford, IL
  • NPI 1306635982
  NPD
• Swedishamerican Hospital

  • Family Medicine Physician
  • Rockford, IL
  • NPI 1619029881
  NPD
• Central PA Pharmacy LLC.

  dba patton pharmacy and v&s variety

  • Community/Retail Pharmacy
  • Patton, PA
  • NPI 1578541413
  NPD
• Freeport Memorial Hospital

  dba FHN-Memorial Hospital

  • General Acute Care Hospital
  • Freeport, IL
  • NPI 1447228788
  NPD (past)
• Physicians Immediate Care LTD

  • Urgent Care Clinic/Center
  • Rockford, IL
  • NPI 1528046323
  NPD (past)
• Physicians Immediate Care North Chicago LLC

  • Urgent Care Clinic/Center
  • Chicago, IL
  • NPI 1205814118
  NPD (past)

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

• Saint Anthony Medical Center

  dba OSF Saint Anthony Medical Center

  • General Acute Care Hospital
  • Rockford, IL
  • NPI 1790739977
  Care Compare affiliation
• Swedishamerican Hospital

  • General Acute Care Hospital
  • Rockford, IL
  • NPI 1760542732
  Care Compare affiliation

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

{
    "created_epoch": "1135814400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776816000000",
    "number": "1659358703",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "29624 NETWORK PL",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606731296",
            "telephone_number": "815-971-2000",
            "fax_number": "815-968-9340"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3401 N PERRYVILLE RD",
            "city": "ROCKFORD",
            "state": "IL",
            "postal_code": "611148011",
            "telephone_number": "815-971-2000",
            "fax_number": "815-971-9570"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3775 N Mulford Rd",
            "address_purpose": "LOCATION",
            "city": "Rockford",
            "state": "IL",
            "postal_code": "611145632",
            "country_code": "US",
            "telephone_number": "779-696-9202",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SY",
        "first_name": "ESTHER",
        "middle_name": "ALIMBOYAO",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-12-29",
        "last_updated": "2026-04-22",
        "certification_date": "2026-04-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "261QU0200X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Urgent Care",
            "state": "IL",
            "license": "036097622",
            "primary": false
        },
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "IL",
            "license": "036097622",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "036097622",
            "state": "IL"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE GROUP #",
            "identifier": "553180",
            "state": "IL"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "esy913937@direct.uwhealth.org",
            "affiliation": "N",
            "address_1": "3775 N Mulford Rd",
            "city": "Rockford",
            "state": "IL",
            "country_code": "US",
            "postal_code": "611145632",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Swedishamerican Hosptial (UW Health Physical Therapy Clinic)
• Charles Sweeney, MD
• Tiffany Sweeney, NP
• Fred A Sweet, M.D.
• Daniel Lawler Swift, M.D.
• Kendra Ivana Samar Sy, DO
• Larry Sy, MD
• Jawad Syed
• Maliha Syed, M.D., M.B.B.S.
• Kirsten Sympson, COTA

• Family Medicine Physician in Rockford, IL
• Providers in Rockford, 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 Apr 22, 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.
• 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.