Individual provider Active NPI

Nassar Farid Khan, M.D.

  • Hematology (Internal Medicine) Physician
  • Fairfax, VA
National Provider Identifier
1396708608
Registry record updated Dec 14, 2021
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hematology (Internal Medicine) PhysicianTaxonomy code 207RH0000X
License
0101053383 Issued in VA
Practice address
3580 Joseph Siewick Dr Ste 403
Fairfax, VA 22033-1764
Phone
(703) 391-4395
Fax
(703) 391-4394
NPI assigned
Apr 8, 2006
Last updated
Dec 14, 2021By the provider in NPPES
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Dec 14, 2021

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Hematology (Internal Medicine) Physician 207RH0000X 0101053383 VA Primary
Hematology & Oncology Physician 207RH0003X 0101053383 VA
Medical Oncology Physician 207RX0202X 0101053383 VA

Addresses

Primary practice location

3580 Joseph Siewick Dr Ste 403
Fairfax, VA 22033-1764

Mailing address

PO Box 37174
Baltimore, MD 21297-3174
Phone (571) 423-5699

Other practice location 1

2826 Old Lee Hwy
Suite 110
Fairfax, VA 22031-4323
Phone (703) 560-8444

Other practice location 2

44055 Riverside Pkwy Ste 108
Leesburg, VA 20176-5179
Phone (703) 858-8600

Other practice location 3

4320 Seminary Rd
Alexandria, VA 22304-1535
Phone (703) 504-3000

Other practice location 4

3600 Joseph Siewick Dr
Fairfax, VA 22033-1709
Phone (703) 391-3600

Other practice location 5

3300 Gallows Rd
Falls Church, VA 22042-3307
Phone (703) 776-4001

Other practice location 6

8081 Innovation Park Dr
Fairfax, VA 22031-4867
Phone (571) 472-4724

Other practice location 7

1800 N Beauregard St Ste 210
Alexandria, VA 22311-1735
Phone (703) 933-8125

Other practice location 8

1800 N Beauregard St Ste 350
Alexandria, VA 22311-1725
Phone (703) 933-8125

Other practice location 9

8501 Arlington Blvd Ste 340
Fairfax, VA 22031-4625
Phone (703) 207-0733

Other identifiers 4

IdentifierTypeStateIssuer
542000362OtherTAX ID
542000362OtherUNITEDHEALTH GROUP
2972-0001OtherDCCAREFIRST DC
005848784MedicaidVA

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address nkhan25492@soc.inova.org Health Information Exchange (HIE) Inova Health Care Services

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in DC, VA2 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

Enrollment IDStateProvider typePAC IDDetails
I20051012000735 DC Practitioner - HematologyPractitioner - Hematology/OncologyPractitioner - Medical Oncology 3577588128 Reassigns benefits to 5 organizations
I20160607000317 VA Practitioner - HematologyPractitioner - Internal MedicinePractitioner - Medical OncologyPractitioner - Hematology/Oncology 3577588128 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
HematologyAlso: Medical Oncology
Education
Other, 1985
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
M Medical Group, Inc.Group PAC ID 7719278597, 104 clinicians
M Management Group LLCGroup PAC ID 6709115298, 22 clinicians
Virginia Internal Medicine IncGroup PAC ID 4082869250, 101 clinicians

Practice addresses (Care Compare)

10701 Main St
Fairfax, VA 22030-6904
Phone (703) 273-7705

223 7TH St NE
Washington, DC 20002-7045
Phone (202) 546-5700

235 Old Waterford NWRD
Leesburg, VA 20176-2117
Phone (703) 771-2841

360 Hospital Dr
Warrenton, VA 20186-3006
Phone (540) 316-5500

9640 Burke Lake Rd
Burke, VA 22015-3022
Phone (703) 425-9765

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
Inova Health Care Services CurrentSince May 9, 2016 Accepting new patients
M Medical Group, Inc. CurrentSince Jul 30, 2025 Accepting new patients
M Management Group LLC Hematology Current Accepting new patients
M Management Group, LLC CurrentSince Aug 1, 2025 Accepting new patients
M Management Group LLC CurrentSince Aug 1, 2025 Accepting new patients
Virginia Internal Medicine Inc CurrentSince Oct 3, 2025 Accepting new patients
M Medical Group, Inc. CurrentSince Jul 30, 2025 Accepting new patients
Inova Health Care Services CurrentSince May 9, 2016 Accepting new patients
Carelife Medical Past Accepting new patients

Locations

223 7th St NE
Washington, DC 20002
Phone (202) 543-4800

9106 Pine View Ln
Clinton, MD 20735
Phone (301) 856-2930

9722 Groffs Mill Dr
Owings Mills, MD 21117
Phone (410) 205-9255

3710 Langston Blvd
Arlington, VA 22207
Phone (703) 243-7640

550 S Carlin Springs Rd
Arlington, VA 22204
Phone (703) 379-7200

9640 Burke Lake Rd
Burke, VA 22015
Phone (347) 761-7200

10701 Main St
Fairfax, VA 22030
Phone (703) 273-7705

3600 Joseph Siewick Dr
Fairfax, VA 22033
Phone (703) 391-3037

3300 Gallows Rd
Falls Church, VA 22042
Phone (703) 352-9395

3440 S Jefferson St
Falls Church, VA 22041
Phone (703) 578-7108

224B Cornwall St NW
Leesburg, VA 20176
Phone (703) 771-2894

235 Old Waterford Rd NW
Leesburg, VA 20176
Phone (571) 206-8696

44055 Riverside Pkwy
Ste 108
Leesburg, VA 20176
Phone (703) 858-8600

360 Hospital Dr
Warrenton, VA 20186
Phone (540) 316-5000

614 Hastings Ln
Warrenton, VA 20186
Phone (540) 347-4770

Interoperability endpoints

  • FHIR API: https://api.platform.athenahealth.com/15993/brand/1/csg/1/fhir/r4

Organizations & group practices 10

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.

NPI Registry JSON

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

{
    "created_epoch": "1144454400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1639440000000",
    "number": "1396708608",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 37174",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212973174",
            "telephone_number": "571-423-5699",
            "fax_number": "571-423-5698"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3580 JOSEPH SIEWICK DR STE 403",
            "city": "FAIRFAX",
            "state": "VA",
            "postal_code": "220331764",
            "telephone_number": "703-391-4395",
            "fax_number": "703-391-4394"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2826 Old Lee Hwy",
            "address_2": "Suite 110",
            "address_purpose": "LOCATION",
            "city": "Fairfax",
            "state": "VA",
            "postal_code": "220314323",
            "country_code": "US",
            "telephone_number": "703-560-8444",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "44055 Riverside Pkwy Ste 108",
            "address_purpose": "LOCATION",
            "city": "Leesburg",
            "state": "VA",
            "postal_code": "201765179",
            "country_code": "US",
            "telephone_number": "703-858-8600",
            "fax_number": "703-858-8603",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "4320 Seminary Rd",
            "address_purpose": "LOCATION",
            "city": "Alexandria",
            "state": "VA",
            "postal_code": "223041535",
            "country_code": "US",
            "telephone_number": "703-504-3000",
            "fax_number": "703-504-3388",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3600 Joseph Siewick Dr",
            "address_purpose": "LOCATION",
            "city": "Fairfax",
            "state": "VA",
            "postal_code": "220331709",
            "country_code": "US",
            "telephone_number": "703-391-3600",
            "fax_number": "703-391-3414",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3300 Gallows Rd",
            "address_purpose": "LOCATION",
            "city": "Falls Church",
            "state": "VA",
            "postal_code": "220423307",
            "country_code": "US",
            "telephone_number": "703-776-4001",
            "fax_number": "703-776-7113",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "8081 Innovation Park Dr",
            "address_purpose": "LOCATION",
            "city": "Fairfax",
            "state": "VA",
            "postal_code": "220314867",
            "country_code": "US",
            "telephone_number": "571-472-4724",
            "fax_number": "571-472-0241",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1800 N Beauregard St Ste 210",
            "address_purpose": "LOCATION",
            "city": "Alexandria",
            "state": "VA",
            "postal_code": "223111735",
            "country_code": "US",
            "telephone_number": "703-933-8125",
            "fax_number": "703-933-8216",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1800 N Beauregard St Ste 350",
            "address_purpose": "LOCATION",
            "city": "Alexandria",
            "state": "VA",
            "postal_code": "223111725",
            "country_code": "US",
            "telephone_number": "703-933-8125",
            "fax_number": "703-933-8216",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "8501 Arlington Blvd Ste 340",
            "address_purpose": "LOCATION",
            "city": "Fairfax",
            "state": "VA",
            "postal_code": "220314625",
            "country_code": "US",
            "telephone_number": "703-207-0733",
            "fax_number": "703-207-0736",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KHAN",
        "first_name": "NASSAR",
        "middle_name": "FARID",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-04-08",
        "last_updated": "2021-12-14",
        "certification_date": "2021-12-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology",
            "state": "VA",
            "license": "0101053383",
            "primary": true
        },
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "VA",
            "license": "0101053383",
            "primary": false
        },
        {
            "code": "207RX0202X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Medical Oncology",
            "state": "VA",
            "license": "0101053383",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "TAX ID",
            "identifier": "542000362",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "UNITEDHEALTH GROUP",
            "identifier": "542000362",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CAREFIRST DC",
            "identifier": "2972-0001",
            "state": "DC"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "005848784",
            "state": "VA"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "nkhan25492@soc.inova.org",
            "affiliation": "Y",
            "endpointDescription": "Health Information Exchange",
            "affiliationName": "Inova Health Care Services",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCDA",
            "address_1": "8081 Innovation Park Dr",
            "city": "Fairfax",
            "state": "VA",
            "country_code": "US",
            "postal_code": "220314867",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Fairfax, VA

Sources for this page

Verify at the official NPI Registry.