Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Katherine Ruddy, MD

Individual provider Rheumatology Physician · NPI 1447887955

Katherine Ruddy, MD is an Internal Medicine in Summit, New Jersey. Graduated from Columbia University College of Physicians and Surgeons in 2020, 6 years ago. Practices with Practice Associates Medical Group, a 1,403-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New Jersey.

Years since qualifying
6
Trained at
Columbia University College of Physicians and Surgeons
Licensed in
NJ
In the registry since
2020
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

33 Overlook Rd Ste L01
Summit, NJ 07901-3561
Phone: (908) 598-7940
Fax: (908) 598-5447
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Rheumatology Physician (primary) Taxonomy 207RR0500X · Licence 25MA12731700 (NJ)

Record details

NPI number1447887955
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 25, 2020
Last updated in NPPESAugust 22, 2025
Certification dateAugust 22, 2025
Mailing addressPo Box 416457, Boston, MA 02241-6457

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesNEUROLOGY
Medical schoolCOLUMBIA UNIVERSITY COLLEGE OF PHYSICIANS AND SURGEONS
Graduated 2020 (6 years in practice)
Group practice Practice Associates Medical Group — 1403 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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