Individual provider Active NPI

Donald Steven Karcher, MD

  • Hematology (Pathology) Physician
  • Washington, DC
National Provider Identifier
1154437499
Registry record updated Sep 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hematology (Pathology) PhysicianTaxonomy code 207ZH0000X
License
MD14909 Issued in DC
Practice address
900 23Rd St NW
Washington, DC 20037-2342
Phone
(202) 994-4665
NPI assigned
Aug 21, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 11, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Hematology (Pathology) Physician 207ZH0000X MD14909 DC Primary
Anatomic Pathology & Clinical Pathology Physician 207ZP0102X MD14909 DC

Addresses

Primary practice location

900 23Rd St NW
Washington, DC 20037-2342

Mailing address

900 23Rd St NW
Washington, DC 20037-2342
Phone (202) 994-4665

Other identifiers 1

IdentifierTypeStateIssuer
0114468200MedicaidDC

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in DC
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 1

Enrollment IDStateProvider typePAC IDDetails
I20101202000437 DC Practitioner - Pathology 1052507019 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Pathology
Education
Louisiana State University School of Medicine in New Orleans, 1974
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Medical Faculty Associates, IncGroup PAC ID 4082528898, 676 clinicians

Practice addresses (Care Compare)

900 23Rd St NW
Washington, DC 20037-2342
Phone (202) 715-4000

Hospital & facility affiliations

  • George Washington Univ Hospital Hospital, Washington, DC, CCN 090001

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
MD14909DCMDAnatomic Pathology & Clinical Pathology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Medical Faculty Associates, Inc CurrentSince Jul 1, 2000 Accepting new patients

Locations

2021 K St NW
Ste 600
Washington, DC 20006
Phone (202) 741-3387

900 23rd St NW
Washington, DC 20037
Phone (202) 715-4750

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 1

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": "1156118400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1154437499",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "900 23RD ST NW",
            "city": "WASHINGTON",
            "state": "DC",
            "postal_code": "200372342",
            "telephone_number": "202-994-4665"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "900 23RD ST NW",
            "city": "WASHINGTON",
            "state": "DC",
            "postal_code": "200372342",
            "telephone_number": "202-994-4665"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KARCHER",
        "first_name": "DONALD",
        "middle_name": "STEVEN",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-08-21",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207ZH0000X",
            "taxonomy_group": "",
            "desc": "Pathology, Hematology",
            "state": "DC",
            "license": "MD14909",
            "primary": true
        },
        {
            "code": "207ZP0102X",
            "taxonomy_group": "",
            "desc": "Pathology, Anatomic Pathology & Clinical Pathology",
            "state": "DC",
            "license": "MD14909",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0114468200",
            "state": "DC"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Washington, DC

Sources for this page

Verify at the official NPI Registry.