Gregory David Gersten, MD

Primary specialty

Diagnostic Radiology PhysicianTaxonomy code 2085R0202X

License

036955 Issued in CT

Practice address

385 Main St S
Union Square
Southbury, CT 06488-4240

Phone

(203) 264-7999

Fax

(203) 264-7477

NPI assigned

Jul 10, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 5

Addresses

Other identifiers 1

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in CT, GA, MI, PA, ID5 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 5

Specialty

Diagnostic Radiology

Education

Columbia University College of Physicians and Surgeons, 1990

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Saint Alphonsus Regional Medical Center IncGroup PAC ID 3476462359, 672 clinicians

Phoebe Physician Group IncGroup PAC ID 8426112350, 420 clinicians

DLP Marquette Physician Practices IncGroup PAC ID 9931359601, 193 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Saint Alphonsus Regional Medical Center Hospital, Boise, ID, CCN 130007
• Phoebe Putney Memorial Hospital Hospital, Albany, GA, CCN 110007
• Uphs Marquette DLP Hospital Hospital, Marquette, MI, CCN 230054
• Saint Alphonsus Medical Center - Nampa Hospital, Nampa, ID, CCN 130013
• St. Alphonsus Medical Center - Baker City Hospital, Baker City, OR, CCN 381315

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• DLP Marquette Physician Practices Inc

  • Obesity Medicine (Internal Medicine) Physician
  • Marquette, MI
  • NPI 1487902995
  Medicare reassignment Care Compare group NPD
• Phoebe Physician Group, Inc

  • Clinic/Center
  • Albany, GA
  • NPI 1487899464
  Medicare reassignment Care Compare group NPD
• Saint Alphonsus Regional Medical Center Inc

  • Psychologist
  • Boise, ID
  • NPI 1649357716
  Medicare reassignment Care Compare group NPD
• Diagnostic Imaging Associates LLC

  • Radiology Clinic/Center
  • Waterbury, CT
  • NPI 1336161918
  Medicare reassignment NPD
• Diagnostic Imaging of Southbury

  • Radiology Clinic/Center
  • Southbury, CT
  • NPI 1245252824
  Medicare reassignment NPD
• Prospect Diagnostic Imaging

  • Radiology Clinic/Center
  • Prospect, CT
  • NPI 1154343739
  Medicare reassignment NPD
• Phoebe Putney Memorial Hospital Inc

  • General Acute Care Hospital
  • Albany, GA
  • NPI 1992789721
  Medicare reassignment NPD
• Scranton Hospitalist Physician Services LLC

  • Diagnostic Radiology Physician
  • Scranton, PA
  • NPI 1023317849
  Medicare reassignment NPD
• Naugatuck Valley MRI LLC

  • Diagnostic Radiology Physician
  • Waterbury, CT
  • NPI 1134141716
  Medicare reassignment
• Naugatuck Valley Radiological Associates PC

  • Diagnostic Radiology Physician
  • Waterbury, CT
  • NPI 1114949799
  Medicare reassignment
• DLP Marquette Physician Practices Inc

  • Rural Health Clinic/Center
  • Marquette, MI
  • NPI 1205635760
  NPD
• Phoebe Putney Memorial Hospital Inc

  • Community/Retail Pharmacy
  • Albany, GA
  • NPI 1891315420
  NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• DLP Marquette General Hospital LLC

  • General Acute Care Hospital
  • Marquette, MI
  • NPI 1568727048
  Care Compare affiliation
• Phoebe Putney Memorial Hospital Inc

  • General Acute Care Hospital
  • Albany, GA
  • NPI 1992789721
  Care Compare affiliation
• Saint Alphonsus Medical Center Baker City, Inc

  • Critical Access Hospital
  • Baker City, OR
  • NPI 1386636355
  Care Compare affiliation
• Saint Alphonsus Medical Center Nampa, Inc.

  • General Acute Care Hospital
  • Nampa, ID
  • NPI 1659371870
  Care Compare affiliation
• Saint Alphonsus Regional Medical Center Inc

  • General Acute Care Hospital
  • Boise, ID
  • NPI 1184155426
  Care Compare affiliation
• Saint Alphonsus Regional Medical Center Inc

  • General Acute Care Hospital
  • Boise, ID
  • NPI 1457414948
  Care Compare affiliation
• Saint Alphonsus Regional Medical Center Inc

  • Psychiatric Hospital Unit
  • Boise, ID
  • NPI 1770687857
  Care Compare affiliation
• Saint Alphonsus Regional Medical Center Inc

  • Family Medicine Physician
  • Caldwell, ID
  • NPI 1861676298

  Hospital

  Care Compare affiliation
• Saint Alphonsus Regional Medical Center Inc

  • General Acute Care Hospital
  • Boise, ID
  • NPI 1992736649
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1152489600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786060800000",
    "number": "1487688214",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "385 MAIN ST S",
            "address_2": "UNION SQUARE BLDG #1 C O NVRA IMAGING NETWORK",
            "city": "SOUTHBURY",
            "state": "CT",
            "postal_code": "064884240",
            "telephone_number": "203-264-7999",
            "fax_number": "203-264-7477"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "385 MAIN ST S",
            "address_2": "UNION SQUARE",
            "city": "SOUTHBURY",
            "state": "CT",
            "postal_code": "064884240",
            "telephone_number": "203-264-7999",
            "fax_number": "203-264-7477"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3000 32nd Ave S",
            "address_purpose": "LOCATION",
            "city": "Fargo",
            "state": "ND",
            "postal_code": "581036132",
            "country_code": "US",
            "telephone_number": "701-364-8000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1055 N Curtis Rd",
            "address_purpose": "LOCATION",
            "city": "Boise",
            "state": "ID",
            "postal_code": "837061309",
            "country_code": "US",
            "telephone_number": "208-367-4320",
            "fax_number": "208-367-6177",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GERSTEN",
        "first_name": "GREGORY",
        "middle_name": "DAVID",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-07-10",
        "last_updated": "2026-08-07",
        "certification_date": "2026-08-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "CT",
            "license": "036955",
            "primary": true
        },
        {
            "code": "2085B0100X",
            "taxonomy_group": "",
            "desc": "Radiology, Body Imaging",
            "state": "CT",
            "license": "036955",
            "primary": false
        },
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "ID",
            "license": "4271297",
            "primary": false
        },
        {
            "code": "2085R0204X",
            "taxonomy_group": "",
            "desc": "Radiology, Vascular & Interventional Radiology",
            "state": "CT",
            "license": "036955",
            "primary": false
        },
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "ND",
            "license": "24716",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "001369554",
            "state": "CT"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "ggersten223182@direct.stfranciscare.org",
            "affiliation": "N",
            "endpointDescription": "Trinity Health of New England Direct Address",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCD",
            "address_1": "385 Main St S",
            "address_2": "Union Square",
            "city": "Southbury",
            "state": "CT",
            "country_code": "US",
            "postal_code": "064884240",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

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• Diagnostic Radiology Physician in Southbury, CT
• Providers in Southbury, CT by specialty
• Diagnostic Radiology Physician in Connecticut

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 7, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.