Katherine Ruddy, MD

Primary specialty

Rheumatology PhysicianTaxonomy code 207RR0500X

License

25MA12731700 Issued in NJ

Practice address

33 Overlook Rd Ste L01
Summit, NJ 07901-3561

Phone

(908) 598-7940

Fax

(908) 598-5447

NPI assigned

Mar 25, 2020

Last updated

Aug 22, 2025By the provider in NPPES

Sex

Female

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 NJ

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

Internal MedicineAlso: Neurology

Education

Columbia University College of Physicians and Surgeons, 2020

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Practice Associates Medical GroupGroup PAC ID 5890703177, 1,412 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Overlook Medical Center Hospital, Summit, NJ, CCN 310051
• Morristown Medical Center Hospital, Morristown, NJ, CCN 310015
• Los Angeles General Medical Center Hospital, Los Angeles, CA, CCN 050373

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Practice Associates Medical Group

  dba Atlantic Medical Group

  • Internal Medicine Physician
  • Morristown, NJ
  • NPI 1427016385
  Medicare reassignment Care Compare group NPD

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

• Ahs Hospital Corp.

  dba Morristown Medical Center

  • General Acute Care Hospital
  • Morristown, NJ
  • NPI 1053384776
  Care Compare affiliation
• Ahs Hospital Corp.

  dba Overlook Hospital

  • General Acute Care Hospital
  • Summit, NJ
  • NPI 1740254143
  Care Compare affiliation
• County of Los Angeles

  dba Los Angeles General Medical Center

  • General Acute Care Hospital
  • Los Angeles, CA
  • NPI 1598773715
  Care Compare affiliation

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

{
    "created_epoch": "1585094400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1755820800000",
    "number": "1447887955",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 416457",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "022416457",
            "telephone_number": "844-362-1735"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "33 OVERLOOK RD STE L01",
            "city": "SUMMIT",
            "state": "NJ",
            "postal_code": "079013561",
            "telephone_number": "908-598-7940",
            "fax_number": "908-598-5447"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "RUDDY",
        "first_name": "KATHERINE",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2020-03-25",
        "last_updated": "2025-08-22",
        "certification_date": "2025-08-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RR0500X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Rheumatology",
            "state": "NJ",
            "license": "25MA12731700",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Christina Rossi, M.S., CCC-SLP
• Irene Epelboym Rossmer, MD
• Dmitry Rozin, M.D.
• Suzanne Rubinetti, LCSW
• Madison T Rubino, FNP
• Russell R. Hoffman,M.D.,P.a.
• Francisca M Ryan, APN
• Stephen R. Sabo, MD
• Margaret Mary Sacco, MD
• Barbara S. Sacks, MSW

• Rheumatology Physician in Summit, NJ
• Providers in Summit, NJ by specialty
• Rheumatology Physician in New Jersey

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 22, 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.