Individual provider Active NPI

Karen Tonya Mason, MD

  • Emergency Medicine Physician
  • Upper Marlboro, MD
National Provider Identifier
1598858086
Registry record updated Jan 10, 2022
On this page

Key facts

NPPES NPI Registry
Primary specialty
Emergency Medicine PhysicianTaxonomy code 207P00000X
License
D56418 Issued in MD
Practice address
1221 Mercantile LN
Upper Marlboro, MD 20774-5374
Phone
(301) 938-3541
NPI assigned
Oct 2, 2006
Last updated
Jan 10, 2022By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 10, 2022

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Emergency Medicine Physician 207P00000X D56418 MD Primary

Addresses

Primary practice location

1221 Mercantile LN
Upper Marlboro, MD 20774-5374

Mailing address

2101 E Jefferson St
Rockville, MD 20852-4908
Phone (301) 938-3541

Other practice location 1

2401 w belvedere ave
baltimore, MD 21215
Phone (410) 601-5737

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, GA, TX, AL, FL, AZ, LA7 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 7

Enrollment IDStateProvider typePAC IDDetails
I20060125000139 DC Practitioner - Emergency Medicine 3779571872 Reassigns benefits to 1 organization
I20220127002165 GA Practitioner - Emergency Medicine 3779571872 Reassigns benefits to 2 organizations
I20241007003645 TX Practitioner - Emergency Medicine 3779571872 Reassigns benefits to 3 organizations
I20241025001583 AL Practitioner - Emergency Medicine 3779571872 Reassigns benefits to 1 organization
I20241121000111 FL Practitioner - Emergency Medicine 3779571872 Reassigns benefits to 2 organizations
I20241205000364 AZ Practitioner - Emergency Medicine 3779571872 Reassigns benefits to 1 organization
I20260427001389 LA Practitioner - Emergency Medicine 3779571872 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Emergency Medicine
Education
Howard University College of Medicine, 1996
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Emergency Medicine Services of FL LLCGroup PAC ID 8426413931, 686 clinicians
Sycamore Lakeland LLCGroup PAC ID 2668915471, 22 clinicians

Practice addresses (Care Compare)

14193 US-441
HCA Florida Summerfield Emergency
Summerfield, FL 34491-3476
Phone (352) 401-1167

42024 Hwy 195
Haleyville, AL 35565-7054
Phone (205) 486-5213

Junction of Hwy 371 Navajo RT 9
Crownpoint, NM 87313-0358
Phone (505) 786-5291

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
83.65 of 100Reported as group
Quality
68.3
Improvement activities
40
Cost
86.97

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Pueblo Pintado Clinic CurrentSince Oct 15, 2024 Accepting new patients
Emergency Medicine Services of FL, LLC Emergency Medicine CurrentSince Aug 27, 2025 Accepting new patients
Peach State Emergency Physicians LLC Emergency Medicine CurrentSince Jul 30, 2024 Accepting new patients
DHHS PHS Naihs Crownpoint Hospital Current Accepting new patients
Sycamore Lakeland LLC Emergency Medicine CurrentSince Aug 28, 2024 Accepting new patients
The Southeast Permanente Medical Group CurrentSince Dec 7, 2021 Accepting new patients
DHHS IHS Phoenix Area Emergency Medicine CurrentSince May 31, 2025 Accepting new patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc CurrentSince Oct 15, 2014 Accepting new patients
MD Ally Services PA Emergency Medicine CurrentSince Oct 11, 2024 Accepting new patients
Artful MD LLC Current Accepting new patients
Thoreau Clinic CurrentSince Oct 15, 2024 Accepting new patients
Lawton Indian Hospital CurrentSince Sep 30, 2024 Accepting new patients
MD Ally Services PA Emergency Medicine CurrentSince Oct 1, 2024 Accepting new patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc Current Accepting new patients
Kaiser Foundation Health Plan of the Mid Atlantic States, Inc CurrentSince Oct 15, 2014 Accepting new patients
Caton Emergency Physicians Emergency Medicine Past Accepting new patients
Maryland Provo-I Medical Services, PC Emergency Medicine Past Accepting new patients
Champion Emergency Physicians LLC Emergency Medicine Past Accepting new patients
Contee Emergency Physicians Emergency Medicine Past Accepting new patients
KHH Emergency Medicine Emergency Medicine Past Accepting new patients
Beth Israel Medical Center Emergency Medicine Past Accepting new patients
Beth Israel Medical Center Past Accepting new patients

Locations

42024 Highway 195
Haleyville, AL 35565
Phone (205) 485-7371

4600 E Washington St
Ste 300
Phoenix, AZ 85034
Phone (602) 638-1872

322 SW Pine Island Rd
Cape Coral, FL 33991
Phone (941) 249-6858

20900 Biscayne Blvd
Miami, FL 33180
Phone (305) 682-7290

7900 Oak Ln
Ste 400
Miami Lakes, FL 33016
Phone (203) 350-2116

105 Tamiami Trl
Fl Tamiami
Port Charlotte, FL 33953

14000 Fivay Rd
Port Richey, FL 34667
Phone (727) 819-2929

14193 S US Highway 441
Summerfield, FL 34491
Phone (352) 245-4440

3495 Piedmont Rd NE
Bldg 9
Atlanta, GA 30305
Phone (404) 364-7000

1350 Walton Way
Augusta, GA 30901
Phone (706) 722-9011

2260 Wrightsboro Rd
Augusta, GA 30904
Phone (706) 481-7000

2460 Washington Rd
Thomson, GA 30824
Phone (706) 595-1411

900 S Caton Ave
#134
Baltimore, MD 21229
Phone (410) 368-2000

2101 E Jefferson St
Rockville, MD 20852
Phone (301) 816-6660

2101 E Jefferson St
Ste 6
Rockville, MD 20852

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

348 W 57th St
Ste 180
New York, NY 10019
Phone (801) 631-7318

1515 NE Lawrie Tatum Rd
Lawton, OK 73507
Phone (580) 353-0350

2000 Health Park Dr
Brentwood, TN 37027
Phone (615) 372-5426

Interoperability endpoints

  • Direct secure messaging: karen.mason.1@27810.direct.athenahealth.com

Organizations & group practices 23

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.

View all 23

Hospital & facility affiliations 4

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": "1159747200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1641772800000",
    "number": "1598858086",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2101 E JEFFERSON ST",
            "city": "ROCKVILLE",
            "state": "MD",
            "postal_code": "208524908",
            "telephone_number": "301-938-3541"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1221 MERCANTILE LN",
            "city": "UPPER MARLBORO",
            "state": "MD",
            "postal_code": "207745374",
            "telephone_number": "301-938-3541"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2401 w belvedere ave",
            "address_purpose": "LOCATION",
            "city": "baltimore",
            "state": "MD",
            "postal_code": "21215",
            "country_code": "US",
            "telephone_number": "410-601-5737",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MASON",
        "first_name": "KAREN",
        "middle_name": "TONYA",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-10-02",
        "last_updated": "2022-01-10",
        "certification_date": "2022-01-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "MD",
            "license": "D56418",
            "primary": true
        }
    ],
    "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": "1221 Mercantile Ln",
            "city": "Upper Marlboro",
            "state": "MD",
            "country_code": "US",
            "postal_code": "207745374",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Upper Marlboro, MD

Sources for this page

Verify at the official NPI Registry.