Individual provider Active NPI

Leonard Wartofsky, MD

  • Endocrinology, Diabetes & Metabolism Physician
  • Washington, DC
National Provider Identifier
1336198282
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Endocrinology, Diabetes & Metabolism PhysicianTaxonomy code 207RE0101X
License
MD4979 Issued in DC
Practice address
110 Irving St NW
#2A38
Washington, DC 20010-2976
Phone
(202) 877-2848
Fax
(202) 877-6292
NPI assigned
May 9, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Endocrinology, Diabetes & Metabolism Physician 207RE0101X MD4979 DC Primary

Addresses

Primary practice location

110 Irving St NW
#2A38
Washington, DC 20010-2976

Mailing address

110 Irving St NW
#2A38
Washington, DC 20010-2976
Phone (202) 877-2848

Other identifiers 1

IdentifierTypeStateIssuer
5851670MedicaidVA

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file
Eligible to order & refer
  • Part B services: No
  • Medical equipment: Yes
  • Home health: No
  • Power mobility devices: Yes
  • Hospice: No
Green means eligible to order or refer.

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
WHC Physician Group LLC Current Accepting new patients
WHC Emerg Phys CurrentSince Mar 1, 2013 Accepting new patients
WHC Physician Group LLC CurrentSince Mar 1, 2013 Accepting new patients
Washington Hospital Center Corp Past Accepting new patients

Locations

110 Irving St NW
#2A38
Washington, DC 20010
Phone (202) 877-2848

110 Irving St NW
Washington, DC 20010
Phone (202) 877-2000

Organizations & group practices 4

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.

NPI Registry JSON

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

{
    "created_epoch": "1147132800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1336198282",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "110 IRVING ST NW",
            "address_2": "#2A38",
            "city": "WASHINGTON",
            "state": "DC",
            "postal_code": "200102976",
            "telephone_number": "202-877-2848",
            "fax_number": "202-877-6292"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "110 IRVING ST NW",
            "address_2": "#2A38",
            "city": "WASHINGTON",
            "state": "DC",
            "postal_code": "200102976",
            "telephone_number": "202-877-2848",
            "fax_number": "202-877-6292"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WARTOFSKY",
        "first_name": "LEONARD",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-09",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RE0101X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Endocrinology, Diabetes & Metabolism",
            "state": "DC",
            "license": "MD4979",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "5851670",
            "state": "VA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Washington, DC

Sources for this page

Verify at the official NPI Registry.