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Hematology/Oncology

Richard J. Conklin, MD

Works at hospitals in Sioux Falls, SD · Aberdeen, SD · Bowdle, SD … · South Dakota

Summary

Dr. Richard J. Conklin, MD is a hematologist-oncologist at 1325 S Cliff Ave, Sioux Falls, SD 57105. Phone: (605) 322-4878. Accepts Medicare assignment. In 2024, Richard J. Conklin had 655 Original Medicare patients and 546,093 services. NPI 1851394662. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Richard J. Conklin, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Richard J. Conklin accept Medicare assignment?
Yes. Medicare's clinician data says Richard J. Conklin accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Richard J. Conklin see?
In 2024, CMS data shows 655 Original Medicare patients and 546,093 services for Richard J. Conklin. This counts Original Medicare only and measures volume, not quality.
What is Richard J. Conklin's NPI number?
1851394662. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Richard J. Conklin, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients655
Services billed to Medicare546,093
Different services or procedures155
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Injection, filgrastim-aafi, biosimilar, (nivestym), 1 microgram (Q5110)97,860 services
  2. Injection, ferumoxytol, for treatment of iron deficiency anemia, 1 mg (non-esrd use) (Q0138)69,360 services
  3. Injection, nivolumab, 1 mg (J9299)54,120 services
  4. Injection, oxaliplatin, 0.5 mg (J9263)32,582 services
  5. Injection, pembrolizumab, 1 mg (J9271)25,800 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol73%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)55%
  • Arthritis42%
  • Ischemic heart disease32%
  • Diabetes31%

Hospitals where Richard J. Conklin works

Medicare's Facility Affiliation Data lists Richard J. Conklin at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Richard J. Conklin is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.

Group practices

Medicare enrollment lists Richard J. Conklin as a member of these groups (CMS data updated October 2, 2026).

  • Avera McKennan959 clinicians in the group
  • Conklin Clinics Prof LLC8 clinicians in the group

Specialties

Find other Hematology/Oncology doctors in South Dakota →

Other hematologist-oncologists in Sioux Falls

Clinicians with the same Medicare primary specialty in Sioux Falls, SD — not a recommendation.

All hematologist-oncologists in Sioux Falls →

Other clinicians in Avera McKennan

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolVanderbilt University School Of Medicine
Graduation year1983 (43 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1851394662
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians