Kathryn K. Riordan, MD
Rheumatology Physician · Staples, MN
Kathryn K. Riordan, MD is a rheumatology physician with a practice address in Staples, Minnesota, and NPI 1669453726, issued on Nov 7, 2005. Check the license (Minnesota 39593, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Kathryn K. Riordan
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 39593 MN
Self-reported in NPPES; status is on the state search - Practice location
- 49725 County 83, Staples, MN 56479
- Phone
- (218) 894-1515
- Enumerated
- Nov 7, 2005
- Record last updated
- Feb 23, 2024
- Fax
- (218) 894-8767
- Medicare enrollment
- Enrolled (PECOS I20100210000741); accepts Medicare assignment
- Medical or professional school
- Uniformed Services Uhs Fe Hebert School Of Med, 1983
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 173 in Minnesota → Look up another NPI →
Also registered at 49725 County 83
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jason Alexander, CRNACertified Registered Nurse Anesthetist1801048350
- Michelle Allred, CNPFamily Nurse Practitioner1710514161
- Levis Eyo Apana, NPPsychiatric/Mental Health Nurse Practitioner1538905146
- Carissa Arens, APRN, CNPFamily Nurse Practitioner1962830026
- Jennifer Asche, PA-CPhysician Assistant1386907111
Verify Kathryn K. Riordan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 39593Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
21% fewer Medicare Part D claims than the average rheumatology physician in 2024
1,562 Medicare Part D claims for 268 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 28 claims were for opioids.
Most prescribed
- Prednisone227 claims
- Methotrexate220 claims
- Hydroxychloroquine Sulfate145 claims
- Leflunomide103 claims
- Gabapentin45 claims
- Allopurinol43 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 97.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
One hospital affiliation
- Lakewood Health SystemStaples, MN · Critical Access Hospitals
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).
Kathryn K. Riordan among 173 rheumatology physician records in Minnesota
Kathryn K. Riordan, MD is one of 173 rheumatology physician records with a practice address in Minnesota. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 85% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1983 · median 2008 among the 116 with a school on file
- Record last updated2024 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 rheumatology physician records list a practice address in Staples
They are 2 of the 143 NPPES records with a practice address in Staples, and 173 rheumatology physician records in Minnesota.
All 173 in Minnesota → Every provider in Staples → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Frany Dadhania, DOStaples, MN 564791629632336
- Vishnuteja Devalla, M.D.Brainerd, MN 564011063874881
- Jeffrey Eickhoff, M.D.Brainerd, MN 564011760744478
- Frank Vasey, MDBrainerd, MN 564011598776767
- James Carpenter, MDBemidji, MN 566011679591341
- Steve Flinkenstein, D.O.Bemidji, MN 566011821209255
- John Kolstoe, MDBemidji, MN 566011124043229
- Bharath Manu Akkara Veetil, MBBSSaint Cloud, MN 563031023174323
Common questions
What is Kathryn K. Riordan, MD's NPI number?
Kathryn K. Riordan, MD's National Provider Identifier (NPI) is 1669453726, issued on Nov 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Kathryn K. Riordan, MD located?
The NPPES record lists a practice address at 49725 County 83, Staples, MN, 56479. Phone: (218) 894-1515. Providers update this record themselves, so call before visiting.
How can I verify Kathryn K. Riordan, MD's license?
NPPES lists Minnesota license number 39593, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Kathryn K. Riordan, MD prescribe under Medicare Part D?
In 2024, Kathryn K. Riordan, MD had 1,562 Medicare Part D claims for 268 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Kathryn K. Riordan, MD's MIPS final score?
The 2023 MIPS final score is 97.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.