Hematology & Oncology in South Dakota
60 licensed hematologist-oncologists practicing in South Dakota across 22 cities.
This page republishes public records from the federal NPI Registry, which every licensed U.S. healthcare provider is required to maintain. These are federal-agency records, not a directory we compile.
Source: NPI Registry · last checked
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Click a city to filter the 50 providers shown below. South Dakota has providers in 22 cities total — search the full NPI Registry for cities not shown here.
NPI Registry records — Hematology & Oncology in South Dakota
37 of 50 shown have disclosed payments in CMS Open Payments (2024)
Showing 50 of 60 federal NPI records, alphabetical by last name. Contact details come directly from the NPI Registry — verify currency with the provider's office. Pharma / device payment disclosures from CMS Open Payments are shown where the physician appears in that federal database.
Zaid Abdel Rahman, MD
4500 San Pablo Rd S
Jacksonville, FL 32224 · (904) 953-2000
License: 17933 (ND)
Hafez Mohammad Ammar Abdullah, MD
42nd and Emile St Omaha
Omaha, NE 68198 · (402) 559-4000
License: 35560 (NE)
In 2024, $314 was disclosed to this physician across 3 transactions by pharmaceutical or medical-device companies.
Mostly gifts ($189) and entertainment ($125).
Largest single payer: AstraZeneca Pharmaceuticals LP ($125).
In 2024, $102 was disclosed to this physician across 2 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($91) and gifts ($12).
Largest single payer: Sirtex Medical Inc ($91).
In 2024, $20 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($20).
Largest single payer: AbbVie Inc. ($20).
In 2024, $209 was disclosed to this physician across 13 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($209).
Largest single payer: ABIOMED ($181).
In 2024, $55,344 was disclosed to this physician across 152 transactions by pharmaceutical or medical-device companies.
Mostly consulting fees ($17,600) and charitable contributions ($17,133).
Largest single payer: Janssen Biotech, Inc. ($34,647).
Kathryn A Arrambide, MD
1410 McFarland Blvd N
Tuscaloosa, AL 35406 · (205) 345-8208
License: 44419 (AL)
In 2024, $6,524 was disclosed to this physician across 101 transactions by pharmaceutical or medical-device companies.
Mostly charitable contributions ($4,410) and entertainment ($1,770).
Largest single payer: AstraZeneca Pharmaceuticals LP ($4,104).
In 2024, $99 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly gifts ($99).
Largest single payer: Incyte Corporation ($99).
In 2023, $21 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly gifts ($21).
Jonathan S Bleeker, MD
1309 W 17th St, Ste 101
Sioux Falls, SD 57104 · (605) 328-8000
License: 8325 (SD)
In 2023, $20 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly gifts ($20).
In 2024, $23 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($23).
Largest single payer: Pfizer Inc. ($23).
Richard J Conklin, MD
310 S Penn St, Suite 105
Aberdeen, SD 57401 · (605) 622-8700
License: 2823 (SD)
In 2024, $125 was disclosed to this physician across 7 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($105) and gifts ($20).
Largest single payer: EISAI INC. ($22).
In 2023, $32 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($32).
Noura Badr Maghraby Elsedawy, MBBCH
880 Madison Ave
Memphis, TN 38103 · (901) 545-6262
License: 61423 (TN)
In 2024, $153 was disclosed to this physician across 7 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($153).
Largest single payer: Pfizer Inc. ($61).
In 2023, $20 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly gifts ($20).
Roberto Ferro Valdes, MD
1000 E 23rd St Ste 200
Sioux Falls, SD 57105 · (605) 322-3035
License: 11928 (SD)
In 2024, $4,575 was disclosed to this physician across 34 transactions by pharmaceutical or medical-device companies.
Mostly consulting fees ($3,850) and entertainment ($725).
Largest single payer: AstraZeneca Pharmaceuticals LP ($4,033).
In 2024, $1,331 was disclosed to this physician across 8 transactions by pharmaceutical or medical-device companies.
Mostly meals and beverages ($1,147) and entertainment ($184).
Largest single payer: Merck Sharp & Dohme LLC ($1,302).
In 2024, $600 was disclosed to this physician across 31 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($600).
Largest single payer: Janssen Biotech, Inc. ($94).
In 2024, $323 was disclosed to this physician across 3 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($224) and gifts ($99).
Largest single payer: Merck Sharp & Dohme LLC ($118).
Keely Marie Hack, MD
1309 W 17th St Ste 101
Sioux Falls, SD 57104 · (605) 328-8000
License: 8920 (SD)
Mark R Huber, MD
1000 E. 23rd St., Ste. 230
Sioux Falls, SD 57105 · (605) 322-6900
License: 5612 (SD)
In 2024, $41 was disclosed to this physician across 2 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($23) and gifts ($18).
Largest single payer: Merck Sharp & Dohme LLC ($41).
Waqas Jehangir, MD, MBBS
1000 E 23rd St Ste 200
Sioux Falls, SD 57105 · (605) 322-3035
License: 12588 (SD)
In 2024, $5,735 was disclosed to this physician across 15 transactions by pharmaceutical or medical-device companies.
Mostly charitable contributions ($5,635) and entertainment ($100).
Largest single payer: BeiGene USA, Inc. ($2,950).
Alexander James Johnson, MD
701 E Rosser Ave
Bismarck, ND 58501 · (701) 323-8550
License: 22378 (ND)
In 2024, $259 was disclosed to this physician across 11 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($259).
Largest single payer: NOVARTIS PHARMACEUTICALS CORPORATION ($96).
Michael D Keppen, MD
1309 W 17th St, Ste 101
Sioux Falls, SD 57104 · (605) 328-8000
License: 3341 (SD)
In 2024, $551 was disclosed to this physician across 2 transactions by pharmaceutical or medical-device companies.
Mostly charitable contributions ($525) and entertainment ($26).
Largest single payer: AstraZeneca Pharmaceuticals LP ($525).
In 2024, $251 was disclosed to this physician across 8 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($135) and gifts ($116).
Largest single payer: Lilly USA, LLC ($116).
In 2024, $55 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($55).
Largest single payer: Janssen Biotech, Inc. ($55).
Miroslaw A Mazurczak, MD
1309 W 17th St, Ste 101
Sioux Falls, SD 57104 · (605) 328-8000
License: 4451 (SD)
In 2024, $291 was disclosed to this physician across 4 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($291).
Largest single payer: ADC Therapeutics America, Inc. ($124).
Kelly George McCaul, MD
1000 E. 23rd St., Ste. 200
Sioux Falls, SD 57105 · (605) 322-3035
License: 4717 (SD)
In 2024, $114,551 was disclosed to this physician across 114 transactions by pharmaceutical or medical-device companies.
Mostly consulting fees ($60,138) and stock or ownership interest ($31,000).
Largest single payer: Janssen Biotech, Inc. ($33,508).
In 2024, $1,026 was disclosed to this physician across 55 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($1,011) and gifts ($15).
Largest single payer: Daiichi Sankyo Inc. ($155).
Michael Stephen McHale, MD
1000 E. 23rd St., Ste. 230
Sioux Falls, SD 57105 · (605) 322-6900
License: 1762 (SD)
In 2023, $106 was disclosed to this physician across 3 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($106).
Heidi Ann McKean, MD
1000 E. 23rd St., Ste. 230
Sioux Falls, SD 57105 · (605) 322-6900
License: 7950 (SD)
In 2023, $77 was disclosed to this physician across 2 transactions by pharmaceutical or medical-device companies.
Mostly gifts ($62) and entertainment ($15).
In 2023, $36 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($36).
Si-Yuen Moy, MD
2501 West 22nd Street, 111-Onc
Siuox Falls, SD 57117 · (605) 336-3230
License: 234766 (NY)
In 2024, $146 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($146).
Largest single payer: BeiGene USA, Inc. ($146).
Houman Nourkeyhani, MD
1000 E 23rd St Ste 230
Sioux Falls, SD 57105 · (605) 322-4996
License: 12013 (SD)
Vinod Parameswaran, MD
1000 E. 23rd St., Ste. 200
Sioux Falls, SD 57105 · (605) 322-3035
License: 5149 (SD)
In 2023, $74 was disclosed to this physician across 2 transactions by pharmaceutical or medical-device companies.
Mostly gifts ($74).
Steven Francis Powell, MD
1309 W 17th St Ste 101
Sioux Falls, SD 57104 · (605) 328-8000
License: 8846 (SD)
In 2023, $665 was disclosed to this physician across 2 transactions by pharmaceutical or medical-device companies.
Mostly charitable contributions ($645) and gifts ($20).
Bongi Ayaana Natalie Rudder, MD
200 1st St Sw
Rochester, MN 55905 · (507) 284-2511
License: 58669 (MN)
In 2024, $64 was disclosed to this physician across 3 transactions by pharmaceutical or medical-device companies.
Mostly gifts ($49) and entertainment ($15).
Largest single payer: Pfizer Inc. ($26).
Jonathan Robert Sande, MD
512 Skyline Blvd Ste 1
Cloquet, MN 55720 · (218) 879-4641
License: 36412 (MN)
In 2023, $240 was disclosed to this physician across 2 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($240).
Travis Paul Snyders, MD
1309 W 17th St Ste 101
Sioux Falls, SD 57104 · (605) 328-8000
License: 13407 (SD)
Benjamin Maurice Solomon, MD
1000 E. 23rd St., Suite 230
Sioux Falls, SD 57105 · (605) 322-6900
License: 8825 (SD)
In 2024, $354 was disclosed to this physician across 6 transactions by pharmaceutical or medical-device companies.
$96 was research funding (clinical-trial work); the remainder was entertainment ($219) and gifts ($38).
Largest single payer: Elekta, Inc. ($101).
Christopher Joseph Sumey, MD
1309 W 17th St Ste, Suite 101
Sioux Falls, SD 57104 · (605) 328-8000
License: 9500 (SD)
In 2024, $29 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($29).
Largest single payer: Tempus AI, Inc ($29).
Showing 50 of 60. Search all on NPI Registry →
Payment totals shown for the latest published program year (2024). Presence of disclosed payments is not, on its own, a conflict of interest. Physicians dispute records directly with CMS (dispute process). How we show this.
Open Payments figures as displayed on . Corrections flow from the manufacturer through CMS and are adopted on our next refresh.
What this page is: a republication of public federal NPI Registry records, filtered to the hematology & oncology taxonomy. It is not a directory we curate, and inclusion is automatic based on each provider's own NPI filing with CMS. Providers who believe their NPI record is inaccurate should update it directly with CMS at npiregistry.cms.hhs.gov; our next refresh adopts the corrected federal record.
Practice info disclaimer: Provider addresses and phone numbers come from the NPI Registry, which providers update at their discretion. Always call ahead to confirm the provider is currently accepting patients and is at the listed address.
Medical disclaimer: This page is not a quality ranking and does not constitute medical advice or endorsement. Choose a provider in consultation with your primary care physician or care team.
Source: NPI Registry (taxonomy: Hematology & Oncology) · Last checked: 2026-04-20