Individual provider Active NPI

Tammi Thomas Howard, MD

  • Internal Medicine Physician
  • Largo, MD
National Provider Identifier
1114189560
Registry record updated Mar 17, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
D0097826 Issued in MD
Practice address
1221 Mercantile LN
Largo, MD 20774-5374
Phone
(301) 618-5500
NPI assigned
Jun 26, 2008
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 17, 2026

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

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X MD045398 DC
Internal Medicine Physician 207R00000X D0097826 MD Primary
Internal Medicine Physician 207R00000X 35-097267 OH
Internal Medicine Physician 207R00000X D974006118320 MN

Addresses

Primary practice location

1221 Mercantile LN
Largo, MD 20774-5374

Mailing address

130 Sutter St FL 2
San Francisco, CA 94104-4009
Phone (415) 658-6791

Other practice location 1

200 1st St SW
Rochester, MN 55905-0001
Phone (507) 284-2511

Other names 1

  • Tammi T Thomas Former name

Electronic endpoints 1

TypeEndpointUseAffiliation
SOAP URL https://careepiceast.kp.org:14430/Interconnect-prodmam/wcf/epic.community.hie/xcpdrespondinggatewaysync.svc/ceq Health Information Exchange (HIE)

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
I20171013002261 DC Practitioner - Internal Medicine 7810175676 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Ohio State University College of Medicine, 2008
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

1221 Mercantile LN
Largo, MD 20774-5374
Phone (301) 618-5700

6104 Old Branch Ave
Temple Hills, MD 20748-2518
Phone (301) 702-6100

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
MD045398DCMDInternal Medicine Physician
D0097826MDMDInternal Medicine Physician
D974006118320MNMDInternal Medicine Physician
35-097267OHMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc CurrentSince Apr 7, 2025 Accepting new patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc CurrentSince Apr 7, 2025 Accepting new patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc Internal Medicine Current Accepting new patients
Frederick Health Hospital Inc Past Accepting new patients

Locations

1221 Mercantile Ln
Upper Marlboro, MD 20774
Phone (301) 618-5500

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": "1214438400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773705600000",
    "number": "1114189560",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "130 SUTTER ST FL 2",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941044009",
            "telephone_number": "415-658-6791",
            "fax_number": "415-520-0904"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1221 MERCANTILE LN",
            "city": "LARGO",
            "state": "MD",
            "postal_code": "207745374",
            "telephone_number": "301-618-5500"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "200 1st St SW",
            "address_purpose": "LOCATION",
            "city": "Rochester",
            "state": "MN",
            "postal_code": "559050001",
            "country_code": "US",
            "telephone_number": "507-284-2511",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HOWARD",
        "first_name": "TAMMI",
        "middle_name": "THOMAS",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2008-06-26",
        "last_updated": "2026-03-17",
        "certification_date": "2026-03-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "DC",
            "license": "MD045398",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MD",
            "license": "D0097826",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "OH",
            "license": "35-097267",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MN",
            "license": "D974006118320",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "SOAP",
            "endpointTypeDescription": "SOAP URL",
            "endpoint": "https://careepiceast.kp.org:14430/Interconnect-prodmam/wcf/epic.community.hie/xcpdrespondinggatewaysync.svc/ceq",
            "affiliation": "N",
            "endpointDescription": "Carequality",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "C-CDA",
            "address_1": "1350 Connecticut Ave NW Ste 1250",
            "city": "Washington",
            "state": "DC",
            "country_code": "US",
            "postal_code": "200361728",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": [
        {
            "first_name": "TAMMI",
            "last_name": "THOMAS",
            "middle_name": "T",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Largo, MD

Sources for this page

Verify at the official NPI Registry.