Individual provider Active NPI

Leon Freudzon

  • Anesthesiology Physician
  • Lebanon, NH
National Provider Identifier
1568606929
Registry record updated Sep 10, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
License
35241 Issued in NH
Practice address
1 Medical Center Dr
Lebanon, NH 03756-0001
Phone
(603) 650-5000
NPI assigned
Apr 28, 2009
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 10, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology Physician 207L00000X 258940 NY
Anesthesiology Physician 207L00000X 052759 CT
Anesthesiology Physician 207L00000X 35241 NH Primary

Addresses

Primary practice location

1 Medical Center Dr
Lebanon, NH 03756-0001

Mailing address

145 Rimmon Rd
Woodbridge, CT 06525-1913
Phone (860) 803-8099

Other practice location 1

333 Cedar St
New Haven, CT 06510-3206
Phone (203) 785-2802

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CT, NH2 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
I20140624000937 CT Practitioner - Anesthesiology 3779707211 Reassigns benefits to 1 organization
I20251016004761 NH Practitioner - Anesthesiology 3779707211 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Anesthesiology
Education
Columbia University College of Physicians and Surgeons, 2009
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Dartmouth-Hitchcock ClinicGroup PAC ID 4183537509, 1,445 clinicians
Yale UniversityGroup PAC ID 9436061736, 2,632 clinicians

Practice addresses (Care Compare)

1 Medical Ctr Dr
Lebanon, NH 03756-1000
Phone (603) 650-5000

20 York St
New Haven, CT 06510-3220
Phone (203) 785-4638

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
87.36 of 100Reported as group
Quality
77.36
Promoting interoperability
100
Improvement activities
40
Cost
74.27

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
052759CTMDAnesthesiology Physician
258940NYMDAnesthesiology Physician
52759CTMDCertified Registered Nurse Anesthetist

Practice roles

OrganizationSpecialtyStatusNew patients
Dartmouth-Hitchcock Clinic CurrentSince Oct 9, 2025 Accepting new patients
Mary Hitchcock Memorial Hospital CurrentSince Oct 9, 2025 Accepting new patients
Mary Hitchcock Memorial Hospital Current Accepting new patients
Yale University Anesthesiology CurrentSince Jul 1, 2014 Accepting new patients
Yale University CurrentSince Jul 1, 2014 Accepting new patients
Mary Hitchcock Memorial Hospital CurrentSince Oct 9, 2025 Accepting new patients
Dartmouth-Hitchcock Clinic Anesthesiology CurrentSince Oct 9, 2025 Accepting new patients

Locations

333 Cedar St
New Haven, CT 06510
Phone (203) 432-4771

800 Howard Ave
New Haven, CT 06519
Phone (203) 785-2140

20 York St
North Haven, CT 06510
Phone (203) 688-2433

1 Medical Dr
Lebanon, NH 03756
Phone (603) 650-5922

Organizations & group practices 7

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 2

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": "1240876800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757462400000",
    "number": "1568606929",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "145 RIMMON RD",
            "city": "WOODBRIDGE",
            "state": "CT",
            "postal_code": "065251913",
            "telephone_number": "860-803-8099"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 MEDICAL CENTER DR",
            "city": "LEBANON",
            "state": "NH",
            "postal_code": "037560001",
            "telephone_number": "603-650-5000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "333 Cedar St",
            "address_purpose": "LOCATION",
            "city": "New Haven",
            "state": "CT",
            "postal_code": "065103206",
            "country_code": "US",
            "telephone_number": "203-785-2802",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "FREUDZON",
        "first_name": "LEON",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2009-04-28",
        "last_updated": "2025-09-10",
        "certification_date": "2025-09-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "NY",
            "license": "258940",
            "primary": false
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "CT",
            "license": "052759",
            "primary": false
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "NH",
            "license": "35241",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Lebanon, NH

Sources for this page

Verify at the official NPI Registry.