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

Dr. Kathryn Jean Ruddy, MDMPH

Individual provider Internal Medicine Physician · NPI 1518948082

Dr. Kathryn Jean Ruddy, MDMPH practises Medical Oncology in Rochester, Minnesota. Graduated from Perelman School of Med at the University of Pennsylvania in 2003, 23 years ago. Practices with Mayo Clinic, a 4,796-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts and Minnesota.

Years since qualifying
23
Trained at
Perelman School of Med at the University of Pennsylvania
Licensed in
MA, MN
In the registry since
2005
Specialties on file
3
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Practice location Address checks out

200 1st St SW
Rochester, MN 55905-0001
Phone: (507) 284-2511
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Medical Oncology Physician (primary) Taxonomy 207RX0202X · Licence 56415 (MN)
Internal Medicine Physician Taxonomy 207R00000X · Licence 224124 (MA)
Medical Oncology Physician Taxonomy 207RX0202X · Licence 224124 (MA)

Record details

NPI number1518948082
Entity typeIndividual (Type 1)
GenderFemale
Credentials MDMPH
Sole proprietorNo
NPI enumeratedNovember 10, 2005
Last updated in NPPESAugust 20, 2020
Certification dateAugust 20, 2020

Medicare enrollment

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

Medicare specialtyMEDICAL ONCOLOGY
Medical schoolPERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA
Graduated 2003 (23 years in practice)
Group practice Mayo Clinic — 4796 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients193
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Mayo Clinic

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 4796 clinicians in the practice; 12 are shown here.

Other providers in Rochester