Arun Ashok Velthottam Rathinam, MD

Primary specialty

Hematology & Oncology PhysicianTaxonomy code 207RH0003X

License

21030 Issued in ND

Practice address

820 4TH St N
Fargo, ND 58102-4539

Phone

(701) 234-6161

NPI assigned

Jun 11, 2021

Last updated

Aug 5, 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 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

State licenses

Interoperability endpoints

• Direct secure messaging: avelthottamrathinammbbs331447@carlehiedirect.net

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

{
    "created_epoch": "1623369600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785888000000",
    "number": "1811565419",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "820 4TH ST N",
            "city": "FARGO",
            "state": "ND",
            "postal_code": "581024539",
            "telephone_number": "701-234-6161"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "820 4TH ST N",
            "city": "FARGO",
            "state": "ND",
            "postal_code": "581024539",
            "telephone_number": "701-234-6161"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "VELTHOTTAM RATHINAM",
        "first_name": "ARUN ASHOK",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2021-06-11",
        "last_updated": "2026-08-05",
        "certification_date": "2026-08-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "ND",
            "license": "21030",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Hematology & Oncology Physician in Fargo, ND
• Providers in Fargo, ND by specialty
• Hematology & Oncology Physician in North Dakota

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 5, 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.