M Hassan Diab, MD

Primary specialty

Hematology & Oncology PhysicianTaxonomy code 207RH0003X

License

3651347 Issued in IL

Practice address

2560 24TH St
Suite 201
Rock Island, IL 61201-5357

Phone

(309) 779-7491

Fax

(309) 779-3093

NPI assigned

Jul 1, 2005

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

Other identifiers 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

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.

• M. Hassan Diab, M.D., S.C.

  • Hematology & Oncology Physician
  • Rock Island, IL
  • NPI 1780856187
  NPD (past)

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

{
    "created_epoch": "1120176000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1255338588",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2560 24TH ST",
            "address_2": "SUITE 201",
            "city": "ROCK ISLAND",
            "state": "IL",
            "postal_code": "612015357",
            "telephone_number": "309-779-7491",
            "fax_number": "309-779-3093"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2560 24TH ST",
            "address_2": "SUITE 201",
            "city": "ROCK ISLAND",
            "state": "IL",
            "postal_code": "612015357",
            "telephone_number": "309-779-7491",
            "fax_number": "309-779-3093"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DIAB",
        "first_name": "M",
        "middle_name": "HASSAN",
        "name_prefix": "Mr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-07-01",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": "3651347",
            "primary": false
        },
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "IL",
            "license": "3651347",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE CROSS BLUE SHIELD",
            "identifier": "08100288",
            "state": "IL"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Alyx Milani Dereu, LCPC
• Jesse Desilva
• Amelia Victoria Devera Sales, FNP-C
• Akhila Reddy Devi Reddy
• Joshua Adam Devilbiss
• Courtney Noelle Dial, PHD
• Joyce Diaz
• Maria Poust Dickmann
• Cheyenne Diekman, MHP
• Michael Anthony Dimaio, M.D.

• Hematology & Oncology Physician in Rock Island, IL
• Providers in Rock Island, IL by specialty
• Hematology & Oncology Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.