NPIMap

Individual provider Active NPI

Mallory Williams, M.D.

  • Trauma Surgery Physician
  • Washington, DC
National Provider Identifier
1669488003
Registry record updated Jan 14, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Trauma Surgery PhysicianTaxonomy code 2086S0127X
License
35.095349 Issued in OH
Practice address
2041 Georgia Ave NW Ste 4000
Washington, DC 20060-4228
Phone
(202) 865-3785
Fax
(202) 865-3136
NPI assigned
Jul 31, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 14, 2026

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

Specialties & licenses 5

Specialty (taxonomy)CodeLicenseStatePrimary
Surgery Physician 208600000X 227496 MA
Surgery Physician 208600000X MD041969 DC
Surgery Physician 208600000X 35.095349 OH
Trauma Surgery Physician 2086S0127X 35.095349 OH Primary
Surgical Critical Care Physician 2086S0102X 35.095349 OH

Addresses

Primary practice location

2041 Georgia Ave NW Ste 4000
Washington, DC 20060-4228

Mailing address

2041 Georgia Ave NW
Washington, DC 20060-0001
Phone (202) 865-6679

Other practice location 1

3000 Arlington Ave
Toledo, OH 43614-2598
Phone (419) 383-4000

Other identifiers 2

IdentifierTypeStateIssuer
1184071MedicaidLA
086515600MedicaidDC

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MI, IL2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20140808001206 MI Practitioner - General Surgery 4486729472 Reassigns benefits to 2 organizations
I20241105000647 IL Practitioner - General Surgery 4486729472 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
General Surgery
Education
Other, 1999
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Cook CountyGroup PAC ID 2860398088, 770 clinicians

Practice addresses (Care Compare)

1901 W Harrison St
Chicago, IL 60612-3714
Phone (312) 633-7292

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
MD041969DCMDSurgery Physician
227496MAMDSurgery Physician
35.095349OHMDSurgery Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Cook County Current Accepting new patients
Bronson Methodist Hospital Trauma Surgery CurrentSince Jul 14, 2014 Accepting new patients
Covenant Medical Center, Inc CurrentSince Mar 1, 2015 Accepting new patients
Covenant Medical Center, Inc. CurrentSince Mar 1, 2015 Accepting new patients
Cook County CurrentSince Sep 29, 2024 Accepting new patients
Cook County Surgery CurrentSince Sep 29, 2024 Accepting new patients
Covenant Medical Center, Inc. Current Accepting new patients
Howard University Surgery CurrentSince Mar 14, 2016 Accepting new patients
Medical University of Ohio at Toledo Past Accepting new patients

Locations

2041 Georgia Ave NW
Washington, DC 20060
Phone (202) 865-3785

2041 Georgia Ave NW
Ste 4000
Washington, DC 20060
Phone (202) 865-3785

1900 W Polk St
Ste 220
Chicago, IL 60612
Phone (312) 864-5504

1901 W Harrison St
Chicago, IL 60612
Phone (312) 864-5100

500 E 51st St
Chicago, IL 60615
Phone (312) 572-2000

2101 Medical Park Dr
Ste 305
Silver Spring, MD 20902
Phone (301) 754-0833

601 John St
Ste M-124
Kalamazoo, MI 49007
Phone (269) 341-7500

1447 N Harrison St
Saginaw, MI 48602
Phone (989) 583-4220

Organizations & group practices 9

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 28

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

View all 28

NPI Registry JSON

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

{
    "created_epoch": "1154304000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768348800000",
    "number": "1669488003",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2041 GEORGIA AVE NW",
            "city": "WASHINGTON",
            "state": "DC",
            "postal_code": "200600001",
            "telephone_number": "202-865-6679"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2041 GEORGIA AVE NW STE 4000",
            "city": "WASHINGTON",
            "state": "DC",
            "postal_code": "200604228",
            "telephone_number": "202-865-3785",
            "fax_number": "202-865-3136"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3000 Arlington Ave",
            "address_purpose": "LOCATION",
            "city": "Toledo",
            "state": "OH",
            "postal_code": "436142598",
            "country_code": "US",
            "telephone_number": "419-383-4000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "MALLORY",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-07-31",
        "last_updated": "2026-01-14",
        "certification_date": "2026-01-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "MA",
            "license": "227496",
            "primary": false
        },
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "DC",
            "license": "MD041969",
            "primary": false
        },
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "OH",
            "license": "35.095349",
            "primary": false
        },
        {
            "code": "2086S0127X",
            "taxonomy_group": "",
            "desc": "Surgery, Trauma Surgery",
            "state": "OH",
            "license": "35.095349",
            "primary": true
        },
        {
            "code": "2086S0102X",
            "taxonomy_group": "",
            "desc": "Surgery, Surgical Critical Care",
            "state": "OH",
            "license": "35.095349",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1184071",
            "state": "LA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "086515600",
            "state": "DC"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Washington, DC

Sources for this page

Verify at the official NPI Registry.