Kathryn Ruddy, MD MPH
NPI 1518948082 · Medical Oncology Physician · Rochester, MN
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathryn Ruddy, MD MPH is a Medical Oncology Physician provider in Rochester, MN (NPI 1518948082).
Provider details
- NPI number
- 1518948082
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD MPH
- Sex
- Female
- Sole proprietor
- No
- License
- 224124 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
441 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Injection of Additional New Drug Or Substance Into Vein96375 | 128 | $16 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 103 | $135 |
| Administration of Non-Hormonal Anti-Neoplastic Chemotherapy Under Skin Or Into Muscle96401 | 42 | $75 |
| Administration of Chemotherapy Into Vein, Each Additional Hour96415 | 33 | $29 |
| Administration of Additional New Drug Or Substance Into Vein, 1 Hour Or Less96417 | 29 | $66 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 24 | $127 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Letrozole | 30 | 14 |
| Tramadol Hcl | 13 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-10
- Last updated
- 2020-08-20
- Certified
- 2020-08-20
Frequently asked questions
- What is Kathryn Ruddy's NPI number?
- Kathryn Ruddy's National Provider Identifier (NPI) is 1518948082, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathryn Ruddy's specialty?
- Kathryn Ruddy is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Kathryn Ruddy located?
- Kathryn Ruddy's practice location on file with NPPES is 200 1st St Sw, Rochester, MN 55905-0001.
- What is Kathryn Ruddy's phone number?
- The practice phone number listed in the NPPES registry for Kathryn Ruddy is (507) 284-2511.
- Does Kathryn Ruddy accept Medicare?
- Kathryn Ruddy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathryn Ruddy's NPI active?
- Yes — Kathryn Ruddy's NPI (1518948082) is active in the NPPES registry as of the last update on 2020-08-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.