Individual provider Active NPI

Tammara Leone Davis, M.D.

  • Psychiatry Physician
  • Greenbelt, MD
National Provider Identifier
1386844603
Registry record updated Feb 6, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Psychiatry PhysicianTaxonomy code 2084P0800X
License
D66338 Issued in MD
Practice address
7474 Greenway Center Dr
Suite 730
Greenbelt, MD 20770-3504
Phone
(301) 982-3437
NPI assigned
Jul 24, 2007
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 6, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Psychiatry Physician 2084P0800X D66338 MD Primary

Addresses

Primary practice location

7474 Greenway Center Dr
Suite 730
Greenbelt, MD 20770-3504

Mailing address

7474 Greenway Center Dr
Suite 730
Greenbelt, MD 20770-3504
Phone (301) 982-3437

Other practice location 1

8040 Georgia Ave Ste 170
Silver Spring, MD 20910-4959
Phone (202) 360-4787

Other identifiers 1

IdentifierTypeStateIssuer
219496YAN8OtherMDPTAN

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MD, DC2 enrollments
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 2

Enrollment IDStateProvider typePAC IDDetails
I20071226000361 MD Practitioner - Psychiatry 1850481193 Reassigns benefits to 2 organizations
I20110705000117 DC Practitioner - Psychiatry 1850481193 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Psychiatry
Education
University of Tennessee, HSC, College of Medicine, 2003
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
MCCD FL Psychiatry Services PAGroup PAC ID 4880064070, 751 clinicians
Axis Healthcare GroupGroup PAC ID 1254409550, 76 clinicians

Practice addresses (Care Compare)

1 Research CT
Suite 450
Rockville, MD 20850-6252
Phone (833) 351-8255

25500 Point Lookout Rd
Leonardtown, MD 20650-2015
Phone (202) 360-4787

2800 Eisenhower Ave
Suite 220 Talkiatry
Alexandria, VA 22314-4587
Phone (833) 351-8255

66 E Main St
Westminster, MD 21157-5008
Phone (833) 351-8255

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
D66338MDMDPsychiatry Physician
338455NYMDFamily Nurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
Axis Healthcare Group Psychiatry CurrentSince May 10, 2025 Accepting new patients
MCCD FL Psychiatry Services PA Psychiatry CurrentSince Jul 31, 2025 Accepting new patients
MCS, PC Psychiatry Past Accepting new patients

Locations

1150 Varnum St NE
Washington, DC 20017
Phone (202) 269-7000

25500 Point Lookout Rd
Leonardtown, MD 20650
Phone (301) 475-6106

8040 Georgia Ave
Ste 170
Silver Spring, MD 20910
Phone (301) 284-0207

66 E Main St
Westminster, MD 21157
Phone (240) 602-3854

2800 Eisenhower Ave
Ste 220
Alexandria, VA 22314
Phone (540) 358-0423

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 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": "1185235200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770336000000",
    "number": "1386844603",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "7474 GREENWAY CENTER DR",
            "address_2": "SUITE 730",
            "city": "GREENBELT",
            "state": "MD",
            "postal_code": "207703504",
            "telephone_number": "301-982-3437"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "7474 GREENWAY CENTER DR",
            "address_2": "SUITE 730",
            "city": "GREENBELT",
            "state": "MD",
            "postal_code": "207703504",
            "telephone_number": "301-982-3437"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "8040 Georgia Ave Ste 170",
            "address_purpose": "LOCATION",
            "city": "Silver Spring",
            "state": "MD",
            "postal_code": "209104959",
            "country_code": "US",
            "telephone_number": "202-360-4787",
            "fax_number": "202-360-4787",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DAVIS",
        "first_name": "TAMMARA",
        "middle_name": "LEONE",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2007-07-24",
        "last_updated": "2026-02-06",
        "certification_date": "2026-02-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "MD",
            "license": "D66338",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PTAN",
            "identifier": "219496YAN8",
            "state": "MD"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Greenbelt, MD

Sources for this page

Verify at the official NPI Registry.