Individual provider Active NPI

Stewart B Karr, MD

  • Diagnostic Radiology Physician
  • Silver Spring, MD
National Provider Identifier
1477567022
Registry record updated May 7, 2008
On this page

Key facts

NPPES NPI Registry
Primary specialty
Diagnostic Radiology PhysicianTaxonomy code 2085R0202X
License
D0035868 Issued in MD
Practice address
2121 Medical Park Drive
Suite 3
Silver Spring, MD 20902
Phone
(501) 681-3003
Fax
(301) 681-5868
NPI assigned
Jul 28, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 7, 2008

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Diagnostic Radiology Physician 2085R0202X D0035868 MD Primary

Addresses

Primary practice location

2121 Medical Park Drive
Suite 3
Silver Spring, MD 20902

Mailing address

4718 Carr Drive
Per SE Technologies Ellie Conley
Fredericksburg, VA 22408
Phone (540) 891-5764

Other identifiers 3

IdentifierTypeStateIssuer
80430026OtherDCBLUE SHIELD
60234801OtherMDBLUE SHIELD
152651100MedicaidMD

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in DC, MD2 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
I20101116000583 DC Practitioner - Interventional RadiologyPractitioner - Diagnostic Radiology 1052217692 Reassigns benefits to 2 organizations
I20151030000597 MD Practitioner - Diagnostic Radiology 1052217692 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Interventional RadiologyAlso: Diagnostic Radiology
Education
Other, 1986
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Blackwell Physicians, LLCGroup PAC ID 2163810383, 67 clinicians
Diagnostic Medical Imaging PAGroup PAC ID 7719885342, 11 clinicians

Practice addresses (Care Compare)

11890 Healing Way
Ahc Imaging
Silver Spring, MD 20904-7917
Phone (240) 637-6222

1500 Forest Glen Rd
Silver Spring, MD 20910-1460
Phone (301) 754-7361

5755 Cedar LN
Columbia, MD 21044-2912
Phone (480) 207-4091

7804 River Falls Dr
Potomac, MD 20854-3878
Phone (480) 207-4091

Hospital & facility affiliations

  • Johns Hopkins Howard County Medical Center Hospital, Columbia, MD, CCN 210048
  • Adventist Healthcare White Oak Medical Center Hospital, Silver Spring, MD, CCN 210016
  • Johns Hopkins Hospital, the Hospital, Baltimore, MD, CCN 210009

Merit-based Incentive Payment System (MIPS)

Final score
75 of 100Reported as group

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Johns Hopkins University Diagnostic Radiology CurrentSince Jan 5, 2023 Accepting new patients
Johns Hopkins University CurrentSince Jan 5, 2023 Accepting new patients
Blackwell Physicians, LLC Diagnostic Radiology CurrentSince Jun 1, 2025 Accepting new patients
Diagnostic Medical Imaging PA Diagnostic Radiology CurrentSince Jul 18, 1991 Accepting new patients
Johns Hopkins University Current Accepting new patients
Clinical Imaging of Silver Spring LLC Diagnostic Radiology Past Accepting new patients
DRS Korsower & Pion Radiology PA Diagnostic Radiology Past Accepting new patients
Frederick Health Hospital Inc Past Accepting new patients

Locations

5755 Cedar Ln
Columbia, MD 21044
Phone (410) 381-7171

820 W Diamond Ave
Ste 500
Gaithersburg, MD 20878

9601 Blackwell Rd
Ste 150
Rockville, MD 20850
Phone (240) 864-1100

11890 Healing Way
Silver Spring, MD 20904
Phone (240) 637-4000

1500 Forest Glen Rd
Silver Spring, MD 20910
Phone (301) 754-7230

4718 Carr Dr
Fredericksburg, VA 22408

Interoperability endpoints

  • Direct secure messaging: skarr1144156@direct.trinity-health.org

Organizations & group practices 8

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 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": "1154044800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1210118400000",
    "number": "1477567022",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4718 CARR DRIVE",
            "address_2": "PER SE TECHNOLOGIES ELLIE CONLEY",
            "city": "FREDERICKSBURG",
            "state": "VA",
            "postal_code": "22408",
            "telephone_number": "540-891-5764",
            "fax_number": "540-891-5769"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2121 MEDICAL PARK DRIVE",
            "address_2": "SUITE 3",
            "city": "SILVER SPRING",
            "state": "MD",
            "postal_code": "20902",
            "telephone_number": "501-681-3003",
            "fax_number": "301-681-5868"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KARR",
        "first_name": "STEWART",
        "middle_name": "B",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-07-28",
        "last_updated": "2008-05-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "MD",
            "license": "D0035868",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE SHIELD",
            "identifier": "80430026",
            "state": "DC"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE SHIELD",
            "identifier": "60234801",
            "state": "MD"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "152651100",
            "state": "MD"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Silver Spring, MD

Sources for this page

Verify at the official NPI Registry.