Thomas R Fennell, MD

Primary specialty

Blood Banking & Transfusion Medicine PhysicianTaxonomy code 207ZB0001X

License

0101274382 Issued in VA

Practice address

3300 Gallows Rd
Falls Church, VA 22042-3307

Phone

(703) 776-3441

Fax

(703) 776-3100

NPI assigned

Jul 18, 2007

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

Specialty

Pathology

Education

Wayne State University School of Medicine, 2007

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Inova Health Care Services - PathologyGroup PAC ID 8426241647, 46 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Inova Fairfax Hospital Hospital, Falls Church, VA, CCN 490063
• Inova Loudoun Hospital Hospital, Leesburg, VA, CCN 490043
• Inova Fair Oaks Hospital Hospital, Fairfax, VA, CCN 490101
• Inova Alexandria Hospital Hospital, Alexandria, VA, CCN 490040
• Inova Mount Vernon Hospital Hospital, Alexandria, VA, CCN 490122

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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 and National Provider Directory roles.

• Inova Health Care Services - Pathology

  • Anatomic Pathology & Clinical Pathology Physician
  • Falls Church, VA
  • NPI 1427369578

  DC

  Medicare reassignment Care Compare group NPD

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

• Inova Health Care Services

  • General Acute Care Hospital
  • Alexandria, VA
  • NPI 1255684460
  Care Compare affiliation
• 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
  • Fairfax, VA
  • NPI 1760513980
  Care Compare affiliation
• Inova Health Care Services

  • General Acute Care Hospital
  • Falls Church, VA
  • NPI 1831220714
  Care Compare affiliation
• Inova Health Care Services

  • General Acute Care Hospital
  • Alexandria, VA
  • NPI 1922139120
  Care Compare affiliation

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

{
    "created_epoch": "1184716800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1386844405",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 37504",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212973504",
            "telephone_number": "571-472-6253"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3300 GALLOWS RD",
            "city": "FALLS CHURCH",
            "state": "VA",
            "postal_code": "220423307",
            "telephone_number": "703-776-3441",
            "fax_number": "703-776-3100"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "FENNELL",
        "first_name": "THOMAS",
        "middle_name": "R",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-07-18",
        "last_updated": "2026-07-13",
        "certification_date": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207ZB0001X",
            "taxonomy_group": "",
            "desc": "Pathology, Blood Banking & Transfusion Medicine",
            "state": "VA",
            "license": "0101274382",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jessica Feldman, OTR/L
• Seth Feldman, DDS
• Bethzaida Felix-Santiago, PSY.D.
• Afiya Nailah Felix
• Madelaine Fellela, PT, DPT
• Robert Gary Fenton, M.D., PH.D.
• John Patrick Feola, M.D.
• Behrouz Ferdosian Najafabadi, M.D.
• John David Fernandez, CCEP
• Margaret-Anne McGibbon Fernandez, M.D.

• Blood Banking & Transfusion Medicine Physician in Falls Church, VA
• Providers in Falls Church, VA by specialty
• Blood Banking & Transfusion 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.
• 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.