Individual provider Active NPI

Letitia G. Carlson, MD

  • Internal Medicine Physician
  • Washington, DC
National Provider Identifier
1528021789
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
MD18721 Issued in DC
Practice address
2150 Pennsylvania Ave NW
Dept. of Medicine
Washington, DC 20037-3201
Phone
(202) 741-2222
NPI assigned
Apr 10, 2006
Last updated
Jul 13, 2026By the provider in NPPES
Sex
Female
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
Internal Medicine Physician 207R00000X MD18721 DC Primary

Addresses

Primary practice location

2150 Pennsylvania Ave NW
Dept. of Medicine
Washington, DC 20037-3201

Mailing address

2150 Pennsylvania Ave NW
Dept. of Medicine
Washington, DC 20037-3201
Phone (202) 741-2222

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
I20101201000442 DC Practitioner - Internal Medicine 0345436499 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Harvard Medical School, 1987
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)

2150 Pennsylvania Ave NW
Washington, DC 20037-3201
Phone (202) 741-2600

6410 Rockledge Dr
Suite 600
Bethesda, MD 20817-1844

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

Hospital & facility affiliations

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Medical Faculty Associates, Inc Internal Medicine CurrentSince Jul 1, 2000 Accepting new patients
Frederick Health Hospital Inc Past Accepting new patients

Locations

2021 K St NW
Ste 600
Washington, DC 20006
Phone (202) 888-8365

2150 Pennsylvania Ave NW
Washington, DC 20037
Phone (202) 741-2222

2150 Pennsylvania Ave NW
#4
Washington, DC 20037

2150 Pennsylvania Ave NW
Ste 10407
Washington, DC 20037
Phone (202) 715-5153

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

Interoperability endpoints

  • Direct secure messaging: lcarlson19525@gwmfa.direct-ci.com

Organizations & group practices 3

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 3

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": "1144627200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1528021789",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2150 PENNSYLVANIA AVE NW",
            "address_2": "DEPT. OF MEDICINE",
            "city": "WASHINGTON",
            "state": "DC",
            "postal_code": "200373201",
            "telephone_number": "202-741-2222"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2150 PENNSYLVANIA AVE NW",
            "address_2": "DEPT. OF MEDICINE",
            "city": "WASHINGTON",
            "state": "DC",
            "postal_code": "200373201",
            "telephone_number": "202-741-2222"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CARLSON",
        "first_name": "LETITIA",
        "middle_name": "G.",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-04-10",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "DC",
            "license": "MD18721",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Washington, DC

Sources for this page

Verify at the official NPI Registry.