NPIMap

Individual provider Active NPI

Jonathan Lowenthal

  • Diagnostic Radiology Physician
  • Worcester, MA
National Provider Identifier
1669932885
Registry record updated Sep 4, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Diagnostic Radiology PhysicianTaxonomy code 2085R0202X
License
1023863 Issued in MA
Practice address
55 Lake Ave N
Worcester, MA 01655-0002
Phone
(508) 334-3850
Fax
(774) 441-3947
NPI assigned
Mar 22, 2019
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 4, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Neuroradiology Physician 2085N0700X 1023863 MA
Diagnostic Radiology Physician 2085R0202X 1023863 MA Primary

Addresses

Primary practice location

55 Lake Ave N
Worcester, MA 01655-0002

Mailing address

PO Box 415348
Boston, MA 02241-5348
Phone (800) 225-8885

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20250904004805 MA Practitioner - Diagnostic Radiology 1951839935 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Diagnostic Radiology
Education
Rutgers R W Johnson Medical School (Cam/New Bruns/Pisc), 2019
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Umass Memorial Medical Group IncGroup PAC ID 4284539891, 2,494 clinicians

Practice addresses (Care Compare)

55 Lake Ave N
Worcester, MA 01655-0002
Phone (508) 334-1000

Hospital & facility affiliations

  • Umass Memorial Medical Center/University Campus Hospital, Worcester, MA, CCN 220163
  • Umass Memorial Health - Harrington Hospital Hospital, Southbridge, MA, CCN 220019
  • Umass Memorial Healthalliance Hospitals Hospital, Leominster, MA, CCN 220001
  • Marlborough Hospital Hospital, Marlborough, MA, CCN 220049
  • Milford Regional Medical Center Hospital, Milford, MA, CCN 220090

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
1023863MAMDDiagnostic Radiology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Umass Memorial Medical Group, Inc. CurrentSince Sep 26, 2025 Accepting new patients
Umass Memorial MRI & Imaging Center, LLC CurrentSince Sep 28, 2025 Accepting new patients
Umass Memorial MRI & Imaging Center, LLC Diagnostic Radiology CurrentSince Sep 28, 2025 Accepting new patients
Umass Memorial MRI & Imaging Center LLC CurrentSince Sep 28, 2025 Accepting new patients
Umass Memorial Radiology Phys Serv Diagnostic Radiology CurrentSince Sep 20, 2025 Accepting new patients
Umass Memorial Medical Group Inc Current Accepting new patients

Locations

14 Prospect St
Milford, MA 01757
Phone (508) 422-2343

340 Thompson Rd
Webster, MA 01570
Phone (508) 943-2600

10 Little Brook Rd
West Wareham, MA 02576

55 Lake Ave N
Worcester, MA 01655
Phone 508334100048862

55 Lake Ave N
#S2824
Worcester, MA 01655
Phone (508) 334-2710

Organizations & group practices 6

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 6

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": "1553212800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756944000000",
    "number": "1669932885",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 415348",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "022415348",
            "telephone_number": "800-225-8885",
            "fax_number": "508-334-1977"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "55 LAKE AVE N",
            "city": "WORCESTER",
            "state": "MA",
            "postal_code": "016550002",
            "telephone_number": "508-334-3850",
            "fax_number": "774-441-3947"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LOWENTHAL",
        "first_name": "JONATHAN",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-03-22",
        "last_updated": "2025-09-04",
        "certification_date": "2025-09-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085N0700X",
            "taxonomy_group": "",
            "desc": "Radiology, Neuroradiology",
            "state": "MA",
            "license": "1023863",
            "primary": false
        },
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "MA",
            "license": "1023863",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Worcester, MA

Sources for this page

Verify at the official NPI Registry.