Kathryn Riordan, MD
NPI 1669453726 · Rheumatology Physician · Staples, MN
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathryn Riordan, MD is a Rheumatology Physician provider in Staples, MN (NPI 1669453726).
Provider details
- NPI number
- 1669453726
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 39593 (MN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 34 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 227 | 82 |
| Methotrexate Sodiumbrand: Methotrexate | 220 | 71 |
| Hydroxychloroquine Sulfate | 145 | 54 |
| Leflunomide | 103 | 35 |
| Gabapentin | 45 | 16 |
| Allopurinol | 43 | 14 |
| Adalimumabbrand: Humira(cf) Pen | 41 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-07
- Last updated
- 2024-02-23
- Certified
- 2024-02-23
Frequently asked questions
- What is Kathryn Riordan's NPI number?
- Kathryn Riordan's National Provider Identifier (NPI) is 1669453726, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathryn Riordan's specialty?
- Kathryn Riordan is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Kathryn Riordan located?
- Kathryn Riordan's practice location on file with NPPES is 49725 County 83, Staples, MN 56479-5280.
- What is Kathryn Riordan's phone number?
- The practice phone number listed in the NPPES registry for Kathryn Riordan is (218) 894-1515.
- Does Kathryn Riordan accept Medicare?
- Kathryn Riordan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathryn Riordan's NPI active?
- Yes — Kathryn Riordan's NPI (1669453726) is active in the NPPES registry as of the last update on 2024-02-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.