Casey C Younkin, M.D.

Primary specialty

Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X

License

036077173 Issued in IL

Practice address

415 N 9TH St
6TH Floor
Springfield, IL 62702-5317

Phone

(217) 545-5117

Fax

(217) 545-4912

NPI assigned

Nov 8, 2005

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

Other identifiers 1

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

Obstetrics/Gynecology

Education

Washington University School of Medicine, 1983

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Siu Physicians and Surgeons IncGroup PAC ID 2365352820, 316 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Memorial Medical Center Hospital, Springfield, IL, CCN 140148
• St Johns Hospital Hospital, Springfield, IL, CCN 140053
• St Francis Hospital Hospital, Litchfield, IL, CCN 141350
• Carlinville Area Hospital Hospital, Carlinville, IL, CCN 141347
• Jacksonville Memorial Hospital Hospital, Jacksonville, IL, CCN 141352

Merit-based Incentive Payment System (MIPS)

Final score

75 of 100Reported as group

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: caseyyounkin@siusm.allscriptsdirect.net

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.

• Siu Physicians & Surgeons, Inc

  dba SIU HealthCare

  • Endocrinology, Diabetes & Metabolism Physician
  • Springfield, IL
  • NPI 1558385989
  Medicare reassignment Care Compare group NPD
• Board of Trustees of Southern Illinois University

  dba Carbondale Care A Van

  • Rural Health Clinic/Center
  • Carbondale, IL
  • NPI 1215978127
  NPD
• Siu Physicians & Surgeons, Inc

  • Durable Medical Equipment & Medical Supplies
  • Springfield, IL
  • NPI 1164055976
  NPD
• Siu Physicians & Surgeons, Inc

  • Pediatrics Physician
  • Springfield, IL
  • NPI 1285657379
  NPD (past)

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

• Carlinville Area Hospital Association

  dba Carlinville Area Hospital

  • Critical Access Hospital
  • Carlinville, IL
  • NPI 1053425124
  Care Compare affiliation
• Memorial Medical Center

  • General Acute Care Hospital
  • Springfield, IL
  • NPI 1255317590
  Care Compare affiliation
• Passavant Memorial Area Hospital Association

  dba Passavant Area Hospital

  • Critical Access Hospital
  • Jacksonville, IL
  • NPI 1174580831
  Care Compare affiliation
• St Francis Hospital of the Hospital Sisters of the Third Order of St F

  • Critical Access Hospital
  • Litchfield, IL
  • NPI 1326057076
  Care Compare affiliation
• St Johns Hospital of the Hospital Sisters of the Third Order of St F

  dba HSHS St. John's Hospital

  • General Acute Care Hospital
  • Springfield, IL
  • NPI 1205818481
  Care Compare affiliation

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

{
    "created_epoch": "1131408000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763596800000",
    "number": "1659352656",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 19639",
            "city": "SPRINGFIELD",
            "state": "IL",
            "postal_code": "627949639",
            "telephone_number": "217-545-8000",
            "fax_number": "844-470-2486"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "415 N 9TH ST",
            "address_2": "6TH FLOOR",
            "city": "SPRINGFIELD",
            "state": "IL",
            "postal_code": "627025317",
            "telephone_number": "217-545-5117",
            "fax_number": "217-545-4912"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "421 N 9th St Bldg Q",
            "address_purpose": "LOCATION",
            "city": "Springfield",
            "state": "IL",
            "postal_code": "627025317",
            "country_code": "US",
            "telephone_number": "217-545-8000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "YOUNKIN",
        "first_name": "CASEY",
        "middle_name": "C",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-11-08",
        "last_updated": "2025-11-20",
        "certification_date": "2025-11-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "IL",
            "license": "036077173",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "036077173",
            "state": "IL"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "caseyyounkin@siusm.allscriptsdirect.net",
            "affiliation": "N",
            "address_1": "415 N 9th St",
            "address_2": "6TH FLOOR",
            "city": "Springfield",
            "state": "IL",
            "country_code": "US",
            "postal_code": "627025317",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Jeffrey Alan Young, O.D.
• Kala M Young, LCPC
• Tyona D Young, MD
• Angela G. Younker, NURSE PRACTITIONER
• Jenna Younker, CRNA
• Allison Nicole Yu, MD
• William R Yu, MD
• Brett Harris Yurcisin, PHARMD
• Farid Zahedieh, M.D.
• Syed Muhammad Raza Zaidi

• Obstetrics & Gynecology Physician in Springfield, IL
• Providers in Springfield, IL by specialty
• Obstetrics & Gynecology Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 20, 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.