William Robert Gesztes, MD, MSC

Primary specialty

Anatomic Pathology & Clinical Pathology PhysicianTaxonomy code 207ZP0102X

License

85990 Issued in CT

Practice address

1290 Silas Deane Hwy Ste 101
Wethersfield, CT 06109-4337

Phone

(860) 859-9061

Fax

(860) 889-6200

NPI assigned

Apr 8, 2019

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in NY

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

Specialty

Pathology

Education

Other, 2015

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

North Shore-Lij Medical PCGroup PAC ID 3375701568, 6,374 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Northern Westchester Hospital Hospital, Mount Kisco, NY, CCN 330162
• Phelps Hospital Hospital, Sleepy Hollow, NY, CCN 330261

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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.

• North Shore-Lij Medical PC

  • Urology Physician
  • Great Neck, NY
  • NPI 1053688572
  Medicare reassignment Care Compare group NPD
• Connecticut Gi PLLC

  • Gastroenterology Physician
  • Hartford, CT
  • NPI 1023124625

  Anatomic Pathology & Clinical Pathology

  NPD
• Litchfield County Gastroenterology Associates, LLC

  • Gastroenterology Physician
  • Torrington, CT
  • NPI 1871513283
  NPD (past)

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

• Northern Westchester Hospital Association

  • Medicare Defined Swing Bed Hospital Unit
  • Mount Kisco, NY
  • NPI 1396178356
  Care Compare affiliation
• Northern Westchester Hospital Association

  • General Acute Care Hospital
  • Mount Kisco, NY
  • NPI 1912992215
  Care Compare affiliation
• Phelps Memorial Hospital Association

  • General Acute Care Hospital
  • Sleepy Hollow, NY
  • NPI 1720185267
  Care Compare affiliation

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

{
    "created_epoch": "1554681600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783382400000",
    "number": "1477016582",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "198 HALPINE RD APT 1350",
            "city": "ROCKVILLE",
            "state": "MD",
            "postal_code": "208527622",
            "telephone_number": "240-406-2848"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1290 SILAS DEANE HWY STE 101",
            "city": "WETHERSFIELD",
            "state": "CT",
            "postal_code": "061094337",
            "telephone_number": "860-859-9061",
            "fax_number": "860-889-6200"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2150 Pennsylvania Ave NW",
            "address_purpose": "LOCATION",
            "city": "Washington",
            "state": "DC",
            "postal_code": "200373201",
            "country_code": "US",
            "telephone_number": "202-741-3000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GESZTES",
        "first_name": "WILLIAM",
        "middle_name": "ROBERT",
        "name_prefix": "Dr.",
        "credential": "MD, MSC",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2019-04-08",
        "last_updated": "2026-07-07",
        "certification_date": "2026-07-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207ZP0102X",
            "taxonomy_group": "",
            "desc": "Pathology, Anatomic Pathology & Clinical Pathology",
            "state": "CT",
            "license": "85990",
            "primary": true
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Joanne Gayeski, LCSW
• Golam Rosul Gazi, M.D.
• Barry Joel Gelber, DDS
• Carol Gemayel-Barra, MD
• Gerident Solutions, LLC
• James Gibson, PA-C
• William C Gilbert, PHD,MSW, LCSW
• Kelley Lynn Gilroy, APRN
• Amanda Gionfriddo
• Lawrence M Giove, M.D.

• Anatomic Pathology & Clinical Pathology Physician in Wethersfield, CT
• Providers in Wethersfield, CT by specialty
• Anatomic Pathology & Clinical Pathology Physician in Connecticut

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 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.