Yaniv Zager, MD

Primary specialty

Colon & Rectal Surgery PhysicianTaxonomy code 208C00000X

License

1024390 Issued in MA

Practice address

67 Belmont St
Worcester, MA 01605-2657

Phone

(508) 334-8195

Fax

(508) 334-8130

NPI assigned

Sep 1, 2023

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in MA

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

Colorectal Surgery (Proctology)

Education

Other, 2016

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)

Hospital & facility affiliations

• Umass Memorial Medical Center/University Campus Hospital, Worcester, MA, CCN 220163

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: yzager1846050@adventhealth.direct-ci.com

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.

• Umass Memorial Medical Group Inc

  • Internal Medicine Physician
  • Worcester, MA
  • NPI 1760445373
  Medicare reassignment Care Compare group NPD
• Umass Memorial Medical Group, Inc.

  • Urgent Care Clinic/Center
  • Oxford, MA
  • NPI 1982381018
  NPD

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

• Umass Memorial Medical Center, Inc.

  • General Acute Care Hospital
  • Worcester, MA
  • NPI 1831151455
  Care Compare affiliation

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

{
    "created_epoch": "1693526400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1759104000000",
    "number": "1750167128",
    "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"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "67 BELMONT ST",
            "city": "WORCESTER",
            "state": "MA",
            "postal_code": "016052657",
            "telephone_number": "508-334-8195",
            "fax_number": "508-334-8130"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2501 N Orange Ave Ste 235",
            "address_purpose": "LOCATION",
            "city": "Orlando",
            "state": "FL",
            "postal_code": "328044659",
            "country_code": "US",
            "telephone_number": "321-468-2656",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "21 Eastern Ave",
            "address_purpose": "LOCATION",
            "city": "Worcester",
            "state": "MA",
            "postal_code": "016053094",
            "country_code": "US",
            "telephone_number": "508-334-8195",
            "fax_number": "508-334-8130",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "28 Newton St",
            "address_purpose": "LOCATION",
            "city": "Southborough",
            "state": "MA",
            "postal_code": "017721215",
            "country_code": "US",
            "telephone_number": "508-334-8195",
            "fax_number": "508-334-8130",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ZAGER",
        "first_name": "YANIV",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2023-09-01",
        "last_updated": "2025-09-29",
        "certification_date": "2025-09-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208C00000X",
            "taxonomy_group": "",
            "desc": "Colon & Rectal Surgery",
            "state": "MA",
            "license": "1024390",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Isabel A Zacharias, MD
• Nafisa Husaninali Zafar, M.ED OTR
• Alexander W Zafiris, MD
• Peter Zagabe
• Nicholas Andrew Zagami
• Jillian T Zahar
• Rachael Zaidel, LMT
• Aleem M Zakaria, DDS
• Wendy A Zalatan, OTRL
• Karen Zaleski

• Colon & Rectal Surgery Physician in Worcester, MA
• Providers in Worcester, MA by specialty
• Colon & Rectal Surgery Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 29, 2025; 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.