Individual provider Active NPI

Margaret McCarthy

  • Anesthesiology Physician
  • Bethesda, MD
National Provider Identifier
1285132860
Registry record updated May 15, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
License
0101267421 Issued in VA
Practice address
8901 Rockville Pike
Bethesda, MD 20889-2111
Phone
(301) 295-6050
NPI assigned
Jan 29, 2018
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 15, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology Physician 207L00000X 0101267421 VA Primary
Anesthesiology Physician 207L00000X 83526 CT

Addresses

Primary practice location

8901 Rockville Pike
Bethesda, MD 20889-2111

Mailing address

16905 Briardale Rd
Derwood, MD 20855-2036

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in DC, VA, CT3 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 3

Enrollment IDStateProvider typePAC IDDetails
I20250121001642 DC Practitioner - Anesthesiology 4284163205 Reassigns benefits to 1 organization
I20250217000161 VA Practitioner - Anesthesiology 4284163205 Reassigns benefits to 1 organization
I20260605002341 CT Practitioner - Anesthesiology 4284163205

Care Compare profile

Medicare Care Compare
Specialty
Anesthesiology
Education
Georgetown University School of Medicine, 2018
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Northstar Anesthesia of Virginia, LLCGroup PAC ID 6608268826, 407 clinicians

Practice addresses (Care Compare)

2501 Parkers LN
Alexandria, VA 22306-3209
Phone (703) 664-7000

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

Hospital & facility affiliations

  • Inova Fairfax Hospital Hospital, Falls Church, VA, CCN 490063

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
83526CTMDAnesthesiology Physician
0101267421VAMDAnesthesiology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Northstar Anesthesia of Virginia, LLC Anesthesiology CurrentSince Dec 1, 2024 Accepting new patients

Locations

2501 Parkers Ln
Alexandria, VA 22306
Phone (703) 664-7000

736 Battlefield Blvd N
Chesapeake, VA 23320
Phone (757) 312-6124

541 Sunset Ln
Ste 201
Culpeper, VA 22701
Phone (540) 829-0700

Organizations & group practices 1

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.

Hospital & facility affiliations 2

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

NPI Registry JSON

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

{
    "created_epoch": "1517184000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778803200000",
    "number": "1285132860",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "16905 BRIARDALE RD",
            "city": "DERWOOD",
            "state": "MD",
            "postal_code": "208552036"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "8901 ROCKVILLE PIKE",
            "city": "BETHESDA",
            "state": "MD",
            "postal_code": "208892111",
            "telephone_number": "301-295-6050"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MCCARTHY",
        "first_name": "MARGARET",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-01-29",
        "last_updated": "2026-05-15",
        "certification_date": "2026-05-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "VA",
            "license": "0101267421",
            "primary": true
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "CT",
            "license": "83526",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Bethesda, MD

Sources for this page

Verify at the official NPI Registry.