Individual provider Active NPI

Lazar John Greenfield Jr., M.D., PH.D.

  • Neurology Physician
  • Farmington, CT
National Provider Identifier
1841286994
Registry record updated Sep 29, 2022
On this page

Key facts

NPPES NPI Registry
Primary specialty
Neurology PhysicianTaxonomy code 2084N0400X
License
055487 Issued in CT
Practice address
Uconn Medical Group
263 Farmington Ave
Farmington, CT 06030-0001
Phone
(860) 679-4888
Fax
(860) 679-0131
NPI assigned
Sep 23, 2005
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 29, 2022

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

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Neurology Physician 2084N0400X 35076214 OH
Clinical Neurophysiology Physician 2084N0600X E-6501 AR
Clinical Neurophysiology Physician 2084N0600X 055487 CT
Neurology Physician 2084N0400X 055487 CT Primary

Addresses

Primary practice location

Uconn Medical Group
263 Farmington Ave
Farmington, CT 06030-0001

Mailing address

Uconn Medical Group
263 Farmington Ave
Farmington, CT 06030-0001
Phone (860) 679-4888

Other identifiers 1

IdentifierTypeStateIssuer
2132034MedicaidOH

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address lgreenfield10769@direct.med.uchc.edu

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CT
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 1

Enrollment IDStateProvider typePAC IDDetails
I20160912000298 CT Practitioner - Neurology 4385613181 Reassigns benefits to 5 organizations

Care Compare profile

Medicare Care Compare
Specialty
Neurology
Education
University of Virginia School of Medicine, 1989
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Bristol Hospital Multi Specialty Group, Inc.Group PAC ID 9032014758, 148 clinicians

Practice addresses (Care Compare)

263 Farmington Ave
Farmington, CT 06030-0001
Phone (860) 679-3692

41 Brewster Rd
Bristol, CT 06010-5161
Phone (860) 585-3000

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
35076214OHMDNeurology Physician
055487CTMDClinical Neurophysiology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Middlesex Hospital CurrentSince Mar 10, 2024 Accepting new patients
University of Connecticut Health Center CurrentSince Sep 2, 2016 Accepting new patients
Hartford Hospital Neurology CurrentSince Sep 27, 2017 Accepting new patients
Bristol Hospital Multi Specialty Group, Inc CurrentSince Jul 15, 2022 Accepting new patients
University of Connecticut Health Center Neurology CurrentSince Sep 2, 2016 Accepting new patients
Hartford Hospital CurrentSince Sep 27, 2017 Accepting new patients
Middlesex Hospital Neurology CurrentSince Mar 10, 2024 Accepting new patients
University of Connecticut Health Center Past Accepting new patients

Locations

41 Brewster Rd
Bristol, CT 06010
Phone (800) 585-3000

5 Munson Rd
Farmington, CT 06032
Phone (860) 679-4888

263 Farmington Ave
Farmington, CT 06030
Phone (860) 679-4477

80 S Main St
Ste 101
Middletown, CT 06457
Phone (860) 358-5970

28 Crescent St
Middletown, CT 06457
Phone (860) 358-6000

80 S Main St
Ste 102
Middletown, CT 06457
Phone (860) 358-6878

Interoperability endpoints

  • Direct secure messaging: lgreenfield10769@direct.med.uchc.edu

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": "1127433600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1664409600000",
    "number": "1841286994",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "UCONN MEDICAL GROUP",
            "address_2": "263 FARMINGTON AVE",
            "city": "FARMINGTON",
            "state": "CT",
            "postal_code": "060300001",
            "telephone_number": "860-679-4888",
            "fax_number": "860-679-0131"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "UCONN MEDICAL GROUP",
            "address_2": "263 FARMINGTON AVE",
            "city": "FARMINGTON",
            "state": "CT",
            "postal_code": "060300001",
            "telephone_number": "860-679-4888",
            "fax_number": "860-679-0131"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GREENFIELD",
        "first_name": "LAZAR",
        "middle_name": "JOHN",
        "name_prefix": "Dr.",
        "name_suffix": "Jr.",
        "credential": "M.D., PH.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-09-23",
        "last_updated": "2022-09-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084N0400X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Neurology",
            "state": "OH",
            "license": "35076214",
            "primary": false
        },
        {
            "code": "2084N0600X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Clinical Neurophysiology",
            "state": "AR",
            "license": "E-6501",
            "primary": false
        },
        {
            "code": "2084N0600X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Clinical Neurophysiology",
            "state": "CT",
            "license": "055487",
            "primary": false
        },
        {
            "code": "2084N0400X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Neurology",
            "state": "CT",
            "license": "055487",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "2132034",
            "state": "OH"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "lgreenfield10769@direct.med.uchc.edu",
            "affiliation": "N",
            "address_1": "Uconn Medical Group",
            "address_2": "263 Farmington Avenue",
            "city": "Farmington",
            "state": "CT",
            "country_code": "US",
            "postal_code": "060300001",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Farmington, CT

Sources for this page

Verify at the official NPI Registry.