Mahmoud Kallash, MD

Primary specialty

Pediatric Nephrology PhysicianTaxonomy code 2080P0210X

License

35-131055 Issued in OH

Practice address

555 S 18TH St
Columbus, OH 43205-2654

Phone

(614) 722-6200

NPI assigned

Jul 25, 2007

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 2

Medicare fee-for-service enrollment

Enrolled in OH

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

NephrologyAlso: Pediatric Medicine

Education

Other, 2006

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Pediatric Academic Association, Inc.Group PAC ID 2961306774, 252 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Nationwide Children'S Hospital Hospital, Columbus, OH, CCN 363305

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mahmoudkallash@ubmd.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.

• Pediatric Academic Association, Inc.

  • Pediatrics Physician
  • Columbus, OH
  • NPI 1063419943
  Medicare reassignment Care Compare group NPD
• Dayton Children'S Specialty Physicians, Inc.

  • Pediatrics Physician
  • Dayton, OH
  • NPI 1225192610
  Medicare reassignment NPD
• Nationwide Children'S Hospital

  • Multi-Specialty Clinic/Center
  • Columbus, OH
  • NPI 1851179873

  Pediatrics

  Medicare reassignment NPD
• Dayton Children'S Specialty Physicians, Inc.

  • Pediatrics Physician
  • Dayton, OH
  • NPI 1780467555
  NPD
• Nationwide Children'S Hospital

  • Durable Medical Equipment & Medical Supplies
  • Columbus, OH
  • NPI 1447061262
  NPD
• Ub Family Medicine, Inc

  • Family Medicine Physician
  • Williamsville, NY
  • NPI 1942294467
  NPD
• Nationwide Children'S Hospital

  • General Acute Care Hospital
  • Columbus, OH
  • NPI 1134152986
  NPD (past)

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

• Nationwide Children'S Hospital

  • General Acute Care Hospital
  • Columbus, OH
  • NPI 1134152986
  Care Compare affiliation

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

{
    "created_epoch": "1185321600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786924800000",
    "number": "1396935508",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "700 CHILDRENS DR",
            "city": "COLUMBUS",
            "state": "OH",
            "postal_code": "432052664",
            "telephone_number": "614-722-2000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "555 S 18TH ST",
            "city": "COLUMBUS",
            "state": "OH",
            "postal_code": "432052654",
            "telephone_number": "614-722-6200"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "740 Adair Ave",
            "address_purpose": "LOCATION",
            "city": "Zanesville",
            "state": "OH",
            "postal_code": "437012838",
            "country_code": "US",
            "telephone_number": "614-722-2000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "536 S Trimble Rd",
            "address_purpose": "LOCATION",
            "city": "Mansfield",
            "state": "OH",
            "postal_code": "449063418",
            "country_code": "US",
            "telephone_number": "614-722-2000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "5675 Venture Dr",
            "address_purpose": "LOCATION",
            "city": "Dublin",
            "state": "OH",
            "postal_code": "430172159",
            "country_code": "US",
            "telephone_number": "614-722-6200",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1 Childrens Plz",
            "address_purpose": "LOCATION",
            "city": "Dayton",
            "state": "OH",
            "postal_code": "454041873",
            "country_code": "US",
            "telephone_number": "937-641-4000",
            "fax_number": "937-641-4500",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KALLASH",
        "first_name": "MAHMOUD",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-07-25",
        "last_updated": "2026-08-17",
        "certification_date": "2026-08-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "OH",
            "license": "35-131055",
            "primary": false
        },
        {
            "code": "2080P0210X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Nephrology",
            "state": "OH",
            "license": "35-131055",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0218203",
            "state": "OH"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE-CGS",
            "identifier": "H589820",
            "state": "OH"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Hakeem M Kalif
• Rebecca Rose Kaliher
• Nathan Jeffrey Kalil, DPM
• Ethan William Kalina
• Tamie May Kalish
• George Joseph Kallingal, DO, PHD
• Terry Lynn Kallio
• Annette Bakie Kallon
• John R. Kalmar
• Samantha Kalmar

• Pediatric Nephrology Physician in Columbus, OH
• Providers in Columbus, OH by specialty
• Pediatric Nephrology Physician in Ohio

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 17, 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.