Shahid B. Ilahi, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

036081783 Issued in IL

Practice address

22N285 Pepper Rd
Suite 303
Lake Barrington, IL 60010-5982

Phone

(630) 952-1412

NPI assigned

Aug 9, 2005

Last updated

Dec 16, 2025By the provider in NPPES

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

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

Gastroenterology

Education

Other, 1982

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
• Advocate Good Shepherd Hospital Hospital, Barrington, IL, CCN 140291

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhir4.healow.com/fhir/r4/HIICCA
• FHIR API: https://fhir4.healow.com/fhir/r4/HIICCA/Endpoint/HIICCA

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.

• Shahid Ilahi MD SC

  • Internal Medicine Physician
  • Lake Barrington, IL
  • NPI 1629077086
  Medicare reassignment NPD Authorized official
• Siu Physicians & Surgeons, Inc

  dba SIU HealthCare

  • Endocrinology, Diabetes & Metabolism Physician
  • Springfield, IL
  • NPI 1558385989

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Alliance Gastroenterology Group LLC

  • Gastroenterology Physician
  • Libertyville, IL
  • NPI 1215759501
  Medicare reassignment NPD
• George N Atia, M.D., S.C.

  dba The Illinois Center for Digestive and Liver health

  • Gastroenterology Physician
  • Barrington, IL
  • NPI 1730214271
  Medicare reassignment NPD
• Gi Partners of Illinois, PLLC

  • Gastroenterology Physician
  • Libertyville, IL
  • NPI 1548613995
  Medicare reassignment NPD
• Mercy Health System Corporation

  dba MHS Physician Services

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

  IL

  Medicare reassignment NPD
• Siu Physicians & Surgeons, Inc

  • Durable Medical Equipment & Medical Supplies
  • Springfield, IL
  • NPI 1164055976
  NPD
• Mercy Health System Corporation

  dba Mercy Walworth Hospital and Medical Center

  • Critical Access Hospital
  • Lake Geneva, WI
  • NPI 1699728550
  NPD
• Global Care S.C.

  dba Illinois Cardiovascular Specialists

  • Interventional Cardiology Physician
  • Barrington, IL
  • NPI 1033309042
  NPD (past)
• Sedation Services LLC

  • Anesthesiology Physician
  • Jackson, MI
  • NPI 1245702844
  NPD (past)

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

• Advocate Health and Hospitals Corporation

  dba Advocate Good Shepherd Hospital

  • General Acute Care Hospital
  • Barrington, IL
  • NPI 1447368071
  Care Compare affiliation
• Memorial Medical Center

  • General Acute Care Hospital
  • Springfield, IL
  • NPI 1255317590
  Care Compare affiliation

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

{
    "created_epoch": "1123545600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1765843200000",
    "number": "1508867078",
    "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"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "22N285 PEPPER RD",
            "address_2": "SUITE 303",
            "city": "LAKE BARRINGTON",
            "state": "IL",
            "postal_code": "600105982",
            "telephone_number": "630-952-1412"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "875 South Route 31",
            "address_purpose": "LOCATION",
            "city": "Crystal Lake",
            "state": "IL",
            "postal_code": "600148190",
            "country_code": "US",
            "telephone_number": "779-220-5500",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "315 W Carpenter St Fl 1",
            "address_purpose": "LOCATION",
            "city": "Springfield",
            "state": "IL",
            "postal_code": "627024901",
            "country_code": "US",
            "telephone_number": "217-545-8000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ILAHI",
        "first_name": "SHAHID",
        "middle_name": "B.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-08-09",
        "last_updated": "2025-12-16",
        "certification_date": "2025-12-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": "036081783",
            "primary": true
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "IL",
            "license": "0036081783",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Rhonda Elizabeth Hering, PT
• Krystal Hoffmann
• Matthew Daniel Houlihan, D.O.
• James David Hursey
• Il Vein Specialists, LTD.
• Illinois Bone and Joint Institute, LLC
• Illinois Bone and Joint Institute, LLC
• Lisa R. Jackson, N.P.
• Ambili Mariam Jacob
• Jill S Jacobek, R.PH.

• Internal Medicine Physician in Lake Barrington, IL
• Providers in Lake Barrington, IL by specialty
• Internal Medicine Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 16, 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.