Ajay Dar, M.D.

Primary specialty

Medical Oncology PhysicianTaxonomy code 207RX0202X

License

0101231668 Issued in VA

Practice address

44035 Riverside Pkwy Ste 300
Leesburg, VA 20176-8260

Phone

(703) 208-3155

Fax

(703) 724-7503

NPI assigned

Mar 8, 2006

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 15

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in VA, DC2 enrollments

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 2

Specialty

Medical OncologyAlso: Hematology

Education

Other, 1984

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Virginia Cancer Specialists, P.C.Group PAC ID 2264412485, 80 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Inova Loudoun Hospital Hospital, Leesburg, VA, CCN 490043
• Reston Hospital Center Hospital, Reston, VA, CCN 490107
• Inova Fairfax Hospital Hospital, Falls Church, VA, CCN 490063

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: ajay.dar@vcs.ikm.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 and National Provider Directory roles.

• Virginia Cancer Specialists, P.C.

  • Hematology & Oncology Physician
  • Fairfax, VA
  • NPI 1346294519

  DC, Medical Oncology

  Medicare reassignment Care Compare group NPD
• Virginia Cancer Specialists, P.C.

  • Community/Retail Pharmacy
  • Fairfax, VA
  • NPI 1053847293
  NPD
• Frederick Health Hospital Inc

  • General Acute Care Hospital
  • Frederick, MD
  • NPI 1538165527
  NPD (past)

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

• Inova Health Care Services

  • Psychiatric Hospital Unit
  • Leesburg, VA
  • NPI 1285786228
  Care Compare affiliation
• Inova Health Care Services

  • General Acute Care Hospital
  • Leesburg, VA
  • NPI 1376564302
  Care Compare affiliation
• Inova Health Care Services

  • Rehabilitation Hospital Unit
  • Falls Church, VA
  • NPI 1588795462
  Care Compare affiliation
• Inova Health Care Services

  • General Acute Care Hospital
  • Falls Church, VA
  • NPI 1831220714
  Care Compare affiliation
• Reston Hospital Center LLC

  • General Acute Care Hospital
  • Reston, VA
  • NPI 1053363853
  Care Compare affiliation

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

{
    "created_epoch": "1141776000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762905600000",
    "number": "1215905286",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3040 WILLIAMS DR STE 100",
            "city": "FAIRFAX",
            "state": "VA",
            "postal_code": "220314618",
            "telephone_number": "571-350-8400",
            "fax_number": "703-940-8692"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "44035 RIVERSIDE PKWY STE 300",
            "city": "LEESBURG",
            "state": "VA",
            "postal_code": "201768260",
            "telephone_number": "703-208-3155",
            "fax_number": "703-724-7503"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DAR",
        "first_name": "AJAY",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-03-08",
        "last_updated": "2025-11-12",
        "certification_date": "2025-11-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "VA",
            "license": "0101231668",
            "primary": false
        },
        {
            "code": "207RX0202X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Medical Oncology",
            "state": "VA",
            "license": "0101231668",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "ONE HEALTH PLAN",
            "identifier": "541795091",
            "state": "VA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "SOUTHERN HEALTH",
            "identifier": "231788",
            "state": "VA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CIGNA HMO",
            "identifier": "0460402",
            "state": "VA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "TRIGON/ANTHEM",
            "identifier": "466399",
            "state": "VA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "AETNA HMO",
            "identifier": "500617-3351765",
            "state": "VA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "FX CTY COMM HEALTH",
            "identifier": "541795091",
            "state": "VA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "NCPPO",
            "identifier": "615136",
            "state": "VA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1215905286",
            "state": "VA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "AETNA PPO",
            "identifier": "500617-5556519",
            "state": "VA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "FIRST HEALTH",
            "identifier": "541795091",
            "state": "VA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PHCS POS/PPO",
            "identifier": "541795091",
            "state": "VA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCBS NCA/CARE FIRST",
            "identifier": "0870-0019",
            "state": "VA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MAMSOI/OP CHOICE/ALLIANCE",
            "identifier": "2110876",
            "state": "VA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "KAISER",
            "identifier": "236852",
            "state": "VA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "TRICARE",
            "identifier": "541795091",
            "state": "VA"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "ajay.dar@vcs.ikm.direct-ci.com",
            "affiliation": "Y",
            "endpointDescription": "Direct Messaging for Providers",
            "affiliationName": "Virginia Cancer Specialists, P.C.",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "Electronic Health Record",
            "address_1": "44035 Riverside Pkwy Ste 300",
            "city": "Leesburg",
            "state": "VA",
            "country_code": "US",
            "postal_code": "201768260",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Farrah Nicole Daly, MD
• Deborah F. Danaceau, PT
• Arezou M Daneshvar, DDS
• Daniel Poth, O.D. and Associates, P.C.
• David Dannels, DC
• Julie Ann Darling, NURSE PRACTITIONER
• Mitra Dastgheyb, M.D.
• Kelley Gilbert Dausman
• Sarah Davidson
• Autumn Renee Davis, RN

• Medical Oncology Physician in Leesburg, VA
• Providers in Leesburg, VA by specialty
• Medical Oncology Physician in Virginia

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 12, 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.