Jason Kass, MD, PHD

Primary specialty

Otolaryngology PhysicianTaxonomy code 207Y00000X

License

263693 Issued in MA

Practice address

123 Summer St Ste 300
Worcester, MA 01608-1216

Phone

(508) 368-3103

Fax

(508) 368-3104

NPI assigned

Aug 18, 2009

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

Otolaryngology

Education

Boston University School of Medicine, 2009

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Reliant Medical Group IncGroup PAC ID 5597755322, 638 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• St Vincent Hospital Hospital, Worcester, MA, CCN 220176
• Milford Regional Medical Center Hospital, Milford, MA, CCN 220090

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine, Doctor of Philosophy

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: jason.kass.npi1194957589.reliant@direct.optumcare.masshiway.net

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.

• Reliant Medical Group, Inc

  • Family Medicine Physician
  • Worcester, MA
  • NPI 1720017528
  Medicare reassignment Care Compare group NPD
• Berkshire Faculty Services Inc

  • Multi-Specialty Clinic/Center
  • Pittsfield, MA
  • NPI 1548212939
  Medicare reassignment NPD
• Brigham & Womens Physicians Organization Inc

  • Internal Medicine Physician
  • Boston, MA
  • NPI 1033535497
  Medicare reassignment NPD
• Dana-Farber Cancer Institute, Inc.

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1851333686
  Medicare reassignment NPD
• Fairview Hospital

  • Rural Health Clinic/Center
  • Great Barrington, MA
  • NPI 1881252286
  NPD
• Reliant Medical Group, Inc

  • Physical Therapist
  • Worcester, MA
  • NPI 1295827962
  NPD (past)
• VHS Acquisition Subsidiary Number 7 Inc

  • General Acute Care Hospital
  • Worcester, MA
  • NPI 1538131214
  NPD (past)

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

• Umass Memorial Health-Milford Regional Medical Center Inc

  • General Acute Care Hospital
  • Milford, MA
  • NPI 1477527497
  Care Compare affiliation
• VHS Acquisition Subsidiary Number 7 Inc

  • General Acute Care Hospital
  • Worcester, MA
  • NPI 1538131214
  Care Compare affiliation

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

{
    "created_epoch": "1250553600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1750118400000",
    "number": "1194957589",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "123 SUMMER ST STE 300",
            "city": "WORCESTER",
            "state": "MA",
            "postal_code": "016081216",
            "telephone_number": "508-368-3103",
            "fax_number": "508-368-3104"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "123 SUMMER ST STE 300",
            "city": "WORCESTER",
            "state": "MA",
            "postal_code": "016081216",
            "telephone_number": "508-368-3103",
            "fax_number": "508-368-3104"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "101 Cedar St",
            "address_purpose": "LOCATION",
            "city": "Milford",
            "state": "MA",
            "postal_code": "017571101",
            "country_code": "US",
            "telephone_number": "508-634-8164",
            "fax_number": "508-634-5064",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "24 Newton St",
            "address_purpose": "LOCATION",
            "city": "Southborough",
            "state": "MA",
            "postal_code": "017721215",
            "country_code": "US",
            "telephone_number": "508-460-3291",
            "fax_number": "508-481-3706",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KASS",
        "first_name": "JASON",
        "credential": "MD, PHD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2009-08-18",
        "last_updated": "2025-06-17",
        "certification_date": "2025-06-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Y00000X",
            "taxonomy_group": "",
            "desc": "Otolaryngology",
            "state": "MA",
            "license": "263693",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Katherine Kasapo
• Cortney Marissa Kashmanian, OTR/L
• Terin Elie Kasica
• Lillian Kasozi, RN
• Gillian Noel Kasper
• Andrea Kassai, M.D.
• Anna Kasseris
• Firas Peter Kassira, O.D.
• Vijay K Kasturi, M.D.
• Sai Sriram Katada, MD

• Otolaryngology Physician in Worcester, MA
• Providers in Worcester, MA by specialty
• Otolaryngology Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 17, 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.