Abdullah B Chahin, MD

Primary specialty

Critical Care Medicine (Internal Medicine) PhysicianTaxonomy code 207RC0200X

License

036155515 Issued in IL

Practice address

10604 Southwest Hwy Ste 107
Chicago Ridge, IL 60415-2717

Phone

(708) 422-0636

Fax

(708) 371-9330

NPI assigned

Aug 26, 2009

Last updated

Apr 2, 2026By 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 3

Addresses

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

Critical Care (Intensivists)Also: Infectious Disease, Internal Medicine

Education

Other, 2006

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Hospitalist Physicians of Illinois, P.C.Group PAC ID 0941614044, 13 clinicians

Loyola University Medical CenterGroup PAC ID 3779488903, 917 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Loyola University Medical Center Hospital, Maywood, IL, CCN 140276
• Ingalls Memorial Hospital Hospital, Harvey, IL, CCN 140191
• Loyola Gottlieb Memorial Hospital Hospital, Melrose Park, IL, CCN 140008

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: achahinmd239585@uchospital.direct-ci.com

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.

• Hospitalist Physicians of Illinois, P.C.

  • Hospitalist Physician
  • Harvey, IL
  • NPI 1396347761

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Loyola University Medical Center

  • General Practice Physician
  • Maywood, IL
  • NPI 1336159961
  Medicare reassignment Care Compare group NPD
• Advocate Health and Hospitals Corporation

  dba Advocate Intensivist Partners

  • Critical Care Medicine (Internal Medicine) Physician
  • Oak Lawn, IL
  • NPI 1629441027
  Medicare reassignment NPD
• Cep America Illinois Intensivists

  • Critical Care Medicine (Internal Medicine) Physician
  • Elgin, IL
  • NPI 1821641499
  Medicare reassignment NPD
• Cook County

  dba John H. Stroger, Jr. Hospital of Cook County

  • General Acute Care Hospital
  • Chicago, IL
  • NPI 1588612832
  Medicare reassignment NPD
• Midwest Pulmonary Critical Care & Sleep Consultants LLC

  • Pulmonary Disease Physician
  • Palos Heights, IL
  • NPI 1467951095

  Internal Medicine

  Medicare reassignment NPD
• Advocate Health and Hospitals Corporation

  dba Advocate Children's Hospital

  • Children's Hospital
  • Oak Lawn, IL
  • NPI 1508315516
  NPD
• Cep America Illinois Intensivists

  • Critical Care Medicine (Internal Medicine) Physician
  • Kankakee, IL
  • NPI 1174320873
  NPD
• Cep America Illinois Intensivists

  • Critical Care Medicine (Internal Medicine) Physician
  • Effingham, IL
  • NPI 1538661475
  NPD
• Cook County

  dba Cook County Health & Hospitals System Physician Services

  • Emergency Medicine Physician
  • Chicago, IL
  • NPI 1821385170

  Internal Medicine

  NPD
• Cook County

  dba Bronzeville Health Center

  • Multi-Specialty Clinic/Center
  • Chicago, IL
  • NPI 1831219450
  NPD
• Loyola University Medical Center

  dba Mulcahy Pharmacy

  • Community/Retail Pharmacy
  • Maywood, IL
  • NPI 1184789299
  NPD

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

• Gottlieb Memorial Hospital

  • General Acute Care Hospital
  • Melrose Park, IL
  • NPI 1831170232
  Care Compare affiliation
• Ingalls Memorial Hospital

  • General Acute Care Hospital
  • Harvey, IL
  • NPI 1598756686
  Care Compare affiliation
• Loyola University Medical Center

  dba Foster G. McGaw Hospital

  • General Acute Care Hospital
  • Maywood, IL
  • NPI 1376521575
  Care Compare affiliation
• Loyola University Medical Center

  dba Loyola University Medical Center Cancer Center

  • General Acute Care Hospital
  • Tinley Park, IL
  • NPI 1427752013
  Care Compare affiliation

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

{
    "created_epoch": "1251244800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1775088000000",
    "number": "1972736890",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "17 VIRGINIA AVE",
            "address_2": "SUITE 107",
            "city": "PROVIDENCE",
            "state": "RI",
            "postal_code": "029054406",
            "telephone_number": "401-443-4992",
            "fax_number": "401-784-4902"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "10604 SOUTHWEST HWY STE 107",
            "city": "CHICAGO RIDGE",
            "state": "IL",
            "postal_code": "604152717",
            "telephone_number": "708-422-0636",
            "fax_number": "708-371-9330"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2160 S 1st Ave",
            "address_purpose": "LOCATION",
            "city": "Maywood",
            "state": "IL",
            "postal_code": "601533328",
            "country_code": "US",
            "telephone_number": "708-216-9000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "11900 Southwest Hwy",
            "address_purpose": "LOCATION",
            "city": "Palos Park",
            "state": "IL",
            "postal_code": "604641200",
            "country_code": "US",
            "telephone_number": "708-274-4900",
            "fax_number": "708-274-4949",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "330 Borthwick Ave Ste 210",
            "address_purpose": "LOCATION",
            "city": "Portsmouth",
            "state": "NH",
            "postal_code": "038017111",
            "country_code": "US",
            "telephone_number": "603-433-8733",
            "fax_number": "603-433-8834",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "12251 S 80th Ave",
            "address_purpose": "LOCATION",
            "city": "Palos Heights",
            "state": "IL",
            "postal_code": "604631290",
            "country_code": "US",
            "telephone_number": "708-923-5869",
            "fax_number": "708-923-5859",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CHAHIN",
        "first_name": "ABDULLAH",
        "middle_name": "B",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2009-08-26",
        "last_updated": "2026-04-02",
        "certification_date": "2026-04-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "IL",
            "license": "036155515",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": "036155515",
            "primary": false
        },
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "IL",
            "license": "036155515",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "ACHAHIN163292@DIRECT.LUHS.ORG",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "2160 S 1st Ave",
            "city": "Maywood",
            "state": "IL",
            "country_code": "US",
            "postal_code": "601533328",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Cardio-Medicine SC
• Jonathan Casabal, PTA
• Kaely Rose Cassidy, M.S., SLP/L
• Celeste Marie Cassin, LPN
• Bassem Chaar, M.D.
• Chicago Ridge Immediate Care Inc
• Chicago Ridge Medical Imaging, LLC
• Chicago Ridge Physical Therapy LLC
• Chicago Ridge Radiology SC
• Chicago Ridge Radiology SC

• Critical Care Medicine (Internal Medicine) Physician in Chicago Ridge, IL
• Providers in Chicago Ridge, IL by specialty
• Critical Care Medicine (Internal Medicine) Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 2, 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.