Katherine Duffey

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

MD473869 Issued in PA

Practice address

833 Chestnut St Ste 220
Philadelphia, PA 19107-4405

Phone

(215) 955-8465

NPI assigned

Apr 15, 2018

Sex

Female

Sole proprietor

No

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 PA, NJ2 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

Specialty

Gastroenterology

Education

Jefferson Medical College of Thomas Jefferson University, 2018

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Jefferson University PhysiciansGroup PAC ID 7911819180, 1,528 clinicians

Jefferson University Physicians of New Jersey PCGroup PAC ID 9931325131, 117 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Thomas Jefferson University Hospital Hospital, Philadelphia, PA, CCN 390174
• Jefferson Stratford Hospital Hospital, Stratford, NJ, CCN 310086

Procedures performed for Medicare patients

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.

• Jefferson University Physicians of New Jersey, P.C.

  • Internal Medicine Physician
  • Voorhees, NJ
  • NPI 1083039200
  Medicare reassignment Care Compare group NPD
• Jefferson University Physicians

  • General Practice Physician
  • Philadelphia, PA
  • NPI 1326093675
  Medicare reassignment Care Compare group

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

• Thomas Jefferson University Hospitals Inc

  • General Acute Care Hospital
  • Philadelphia, PA
  • NPI 1215916002
  Care Compare affiliation
• Kennedy University Hospital Inc.

  • General Acute Care Hospital
  • Stratford, NJ
  • NPI 1386746592
  Care Compare affiliation

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

{
    "created_epoch": "1523750400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773792000000",
    "number": "1851888929",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "833 CHESTNUT ST STE 220",
            "city": "PHILADELPHIA",
            "state": "PA",
            "postal_code": "191074405"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "833 CHESTNUT ST STE 220",
            "city": "PHILADELPHIA",
            "state": "PA",
            "postal_code": "191074405",
            "telephone_number": "215-955-8465"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DUFFEY",
        "first_name": "KATHERINE",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-04-15",
        "last_updated": "2026-03-18",
        "certification_date": "2026-03-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "PA",
            "license": "MD473869",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "PA",
            "license": "MD473869",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Robert S Dudnick, MD
• Thomas Dudrick, COTA/L
• Mariana Duenas Lopez, MD
• Ethan John Duerre
• Cheyenne Dufall, LCSW
• Laura Anne Duffey, B.A.
• Gareth Duffield, M.A.
• Olivia Duffield
• Duffy Brothers Opticians
• Lucas Duffy-Tumasz, LSW

• Gastroenterology Physician in Philadelphia, PA
• Providers in Philadelphia, PA by specialty
• Gastroenterology Physician in Pennsylvania

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 18, 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.