Joel Lester Koslow, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

0101020388 Issued in VA

Practice address

6355 Walker LN
Suite 303
Alexandria, VA 22310-3245

Phone

(703) 971-0505

Fax

(703) 971-0508

NPI assigned

May 1, 2006

Last updated

Jul 13, 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

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• Inova Health Care Services

  • Internal Medicine Physician
  • Falls Church, VA
  • NPI 1952320061

  DC

  Medicare reassignment NPD
• Privia Medical Group, LLC

  • Internal Medicine Physician
  • Arlington, VA
  • NPI 1013042480

  DC

  Medicare reassignment NPD
• Koslow and Hunt MD LTD

  • Internal Medicine Physician
  • Alexandria, VA
  • NPI 1851358980
  Authorized official Same address or phone
• Inova Health Care Services

  dba Inova Blood Donor Services

  • Medical Technologist
  • Sterling, VA
  • NPI 1699655589
  NPD
• Privia Medical Group, LLC

  • Pain Medicine (Psychiatry & Neurology) Physician
  • Rockville, MD
  • NPI 1811715436
  NPD
• Inova Alexandria Hospital

  dba Alexandria Ekg Readers

  • Cardiovascular Disease Physician
  • Alexandria, VA
  • NPI 1457538191
  NPD (past)
• Frederick Health Hospital Inc

  dba Frederick Health Hospital

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

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

{
    "created_epoch": "1146441600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1063479186",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6355 WALKER LN",
            "address_2": "SUITE 303",
            "city": "ALEXANDRIA",
            "state": "VA",
            "postal_code": "223103245",
            "telephone_number": "703-971-0505",
            "fax_number": "703-971-0508"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6355 WALKER LN",
            "address_2": "SUITE 303",
            "city": "ALEXANDRIA",
            "state": "VA",
            "postal_code": "223103245",
            "telephone_number": "703-971-0505",
            "fax_number": "703-971-0508"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KOSLOW",
        "first_name": "JOEL",
        "middle_name": "LESTER",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-01",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "VA",
            "license": "0101020388",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Linda Carol Kornett, LCSW
• Aiah Barku Koroma
• Aminata Banya Koroma
• Cara Lynn Koshut, B.S.
• Koslow and Hunt MD LTD
• Bethany A Koszelak, MA, CAS
• Lawrence Mark Kotler, DDS
• Laura Ellen Kowalik
• Doris Kpakra
• Kpdi Acupuncture, PLLC (Alleva Acupuncture)

• Internal Medicine Physician in Alexandria, VA
• Providers in Alexandria, VA by specialty
• Internal Medicine Physician in Virginia

• 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.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.