Ronald J Oconer, D.O.

Primary specialty

Anesthesiology PhysicianTaxonomy code 207L00000X

License

036.122284 Issued in IL

Practice address

901 Grant St
Harvard, IL 60033-1821

Phone

(815) 943-8094

Fax

(815) 943-8645

NPI assigned

Jun 7, 2007

Sex

Male

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 10

Medicare fee-for-service enrollment

Enrolled in IL, WI2 enrollments

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 2

Specialty

Anesthesiology

Education

Midwestern University, Chicago College of Osteopathic Med, 2003

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Northwestern Medical Faculty FoundationGroup PAC ID 4587576814, 4,386 clinicians

Oak Brook Anesthesiologists LTDGroup PAC ID 3870554298, 20 clinicians

Novus Illinois Service CorporationGroup PAC ID 6901293786, 28 clinicians

The Monroe Clinic, Inc.Group PAC ID 3072425495, 199 clinicians

Town Square Anesthesia LLCGroup PAC ID 9335047455, 21 clinicians

Orthomidwest, PLLCGroup PAC ID 0749183713, 531 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• The Monroe Clinic Hospital, Monroe, WI, CCN 520028
• Northwestern Medicine McHenry Hospital, McHenry, IL, CCN 140116

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations (25 of 32)

Interoperability endpoints

• Direct secure messaging: roconer855095@direct.froedtert.com

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.

• Northwestern Medical Faculty Foundation

  • Multi-Specialty Clinic/Center
  • Carol Stream, IL
  • NPI 1346235314
  Medicare reassignment Care Compare group NPD
• Oak Brook Anesthesiologists, LTD.

  • Anesthesiology Physician
  • Oak Brook, IL
  • NPI 1881705937
  Medicare reassignment Care Compare group NPD
• Town Square Anesthesia LLC

  • Anesthesiology Physician
  • Woodstock, IL
  • NPI 1669471017
  Medicare reassignment Care Compare group NPD
• The Monroe Clinic, Inc.

  • Specialist
  • Monroe, WI
  • NPI 1386720548
  Medicare reassignment Care Compare group NPD
• Novus Illinois Service Corporation

  • Anesthesiology Physician
  • Kankakee, IL
  • NPI 1295491744
  Medicare reassignment Care Compare group
• Orthomidwest, PLLC

  • Orthopaedic Surgery Physician
  • Rockford, IL
  • NPI 1730136474
  Medicare reassignment Care Compare group
• Huntley Anesthesia Associates LLC

  • Anesthesiology Physician
  • Huntley, IL
  • NPI 1205282019
  Medicare reassignment NPD
• Priority Anesthesia LLC

  • Anesthesiology Physician
  • Park Ridge, IL
  • NPI 1285174557

  WI

  Medicare reassignment NPD
• Windy City Anesthesia PC

  • Certified Registered Nurse Anesthetist
  • Frankfort, IL
  • NPI 1932248622

  Anesthesiology

  Medicare reassignment NPD
• Mercy Health System Corporation

  • Multi-Specialty Clinic/Center
  • Janesville, WI
  • NPI 1598718603

  IL

  Medicare reassignment NPD
• Northstar Anesthesia of Illinois, LLC

  • Anesthesiology Physician
  • Arlington, TX
  • NPI 1962822395

  IL

  Medicare reassignment NPD
• Vituity-Wisconsin Anesthesia SC

  • Anesthesiology Physician
  • Pleasant Prairie, WI
  • NPI 1821831975
  Medicare reassignment NPD

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

• Northern Illinois Medical Center

  • General Acute Care Hospital
  • McHenry, IL
  • NPI 1982611281
  Care Compare affiliation
• The Monroe Clinic, Inc.

  • General Acute Care Hospital
  • Monroe, WI
  • NPI 1740291491
  Care Compare affiliation

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

{
    "created_epoch": "1181174400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778025600000",
    "number": "1649473729",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "901 GRANT ST",
            "city": "HARVARD",
            "state": "IL",
            "postal_code": "600331821",
            "telephone_number": "815-943-8094",
            "fax_number": "815-943-8645"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "901 GRANT ST",
            "city": "HARVARD",
            "state": "IL",
            "postal_code": "600331821",
            "telephone_number": "815-943-8094",
            "fax_number": "815-943-8645"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "5875 E Riverside Blvd",
            "address_purpose": "LOCATION",
            "city": "Rockford",
            "state": "IL",
            "postal_code": "611144937",
            "country_code": "US",
            "telephone_number": "815-398-9491",
            "fax_number": "815-381-7498",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "10400 Haligus Rd",
            "address_purpose": "LOCATION",
            "city": "Huntley",
            "state": "IL",
            "postal_code": "601429553",
            "country_code": "US",
            "telephone_number": "224-654-0000",
            "fax_number": "224-654-0000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "OCONER",
        "first_name": "RONALD",
        "middle_name": "J",
        "credential": "D.O.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-06-07",
        "last_updated": "2026-05-06",
        "certification_date": "2026-05-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "WI",
            "license": "53011-21",
            "primary": false
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "PA",
            "license": "OS013538",
            "primary": false
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "IL",
            "license": "036.122284",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "KEYSTONE MERCY",
            "identifier": "30042806",
            "state": "PA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "HEALTH PARTNERS - FF",
            "identifier": "30563",
            "state": "PA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "KEYSTONE IBC",
            "identifier": "30042806",
            "state": "PA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1019305800003",
            "state": "PA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PERSONAL CHOICE",
            "identifier": "2855609000",
            "state": "PA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1019305800001",
            "state": "PA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1019305800002",
            "state": "PA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "HEALTH PARTNERS - FB",
            "identifier": "30567",
            "state": "PA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "HEALTH PARTNERS TC",
            "identifier": "01697",
            "state": "PA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "HIGHMARK BLUE SHIELD",
            "identifier": "1970005",
            "state": "PA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Michele K Moore, OT
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• Terri Lynne O'Malley, J.D., M.D.
• Onyx Health Management LLC
• Aapti Sharad Patel, PT
• Sangita A Patel, MD
• Pathway to Peace Counseling PLLC
• Jennifer Diane Paul, RD

• Anesthesiology Physician in Harvard, IL
• Providers in Harvard, IL by specialty
• Anesthesiology Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 6, 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.