NPPES file of Aug 9, 2026

Robert A. Nelimark, M.D.

Hematology & Oncology Physician · Sioux Falls, SD

Robert A. Nelimark, M.D. is a hematology & oncology physician with a practice address in Sioux Falls, South Dakota, and NPI 1669478376, issued on Jun 27, 2005. Check the license (South Dakota 1208, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1669478376
Name
Robert A. Nelimark
Credential
M.D.
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
1208 SD
Self-reported in NPPES; status is on the state search
Practice location
1020 W 18TH St, Sioux Falls, SD 57104
Phone
(605) 328-8000
Enumerated
Jun 27, 2005
Record last updated
May 9, 2008 (not updated in 18 years: call before relying on the address or phone)
Fax
(605) 328-8001
Medicaid ID
6001032 SD
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest hematology & oncology physician records → All 31 in South Dakota → Look up another NPI →

Also registered at 1020 W 18TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Lauren Ahrendt, DPTPhysical Therapist1669741682
  2. Olivia Baker, OTR/LOccupational Therapist1396381281
  3. Amanda Barton, ED.S., NCSP, BCBABehavior Analyst1780195297
  4. Kayla Beacom, DPTPhysical Therapist1730725920
  5. Melissa Beckstrom, DPTPhysical Therapist1972890705
  6. Alyssa Brown, OTDPediatric Occupational Therapist1730811555

Verify Robert A. Nelimark in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersSouth Dakota Board of Medical and Osteopathic Examiners
    Search for license 1208    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the South Dakota license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Robert A. Nelimark among 31 hematology & oncology physician records in South Dakota

Robert A. Nelimark, M.D. is one of 31 hematology & oncology physician records with a practice address in South Dakota. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 77% newer
  • In a Medicare fileNo · 87% of these records are
  • In the CMS Doctors and Clinicians fileNo · 68% of these records are
  • Record last updated2008 · 71% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology & Oncology Physician providers in South Dakota

There are 31 hematology & oncology physician records in South Dakota. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 31 in South Dakota → Every provider in Sioux Falls → Hematology & Oncology Physician nationwide →

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Jonathan Bleeker, MDSioux Falls, SD 571041457573974
  2. Keely Hack, M.D.Sioux Falls, SD 571041184743148
  3. Michael Keppen, M.D.Sioux Falls, SD 571041881690592
  4. Miroslaw Mazurczak, M.D.Sioux Falls, SD 571041437155140
  5. Steven Powell, M.D.Sioux Falls, SD 571041548454291
  6. Amy Sanford, M.D.Sioux Falls, SD 571041679708283
  7. Travis Snyders, M.D.Sioux Falls, SD 571041588013643
  8. Christopher Sumey, M.D.Sioux Falls, SD 571041588836548

Common questions

What is Robert A. Nelimark, M.D.'s NPI number?

Robert A. Nelimark, M.D.'s National Provider Identifier (NPI) is 1669478376, issued on Jun 27, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Robert A. Nelimark, M.D. located?

The NPPES record lists a practice address at 1020 W 18TH St, Sioux Falls, SD, 57104. Phone: (605) 328-8000. Providers update this record themselves, so call before visiting.

How can I verify Robert A. Nelimark, M.D.'s license?

NPPES lists South Dakota license number 1208, as entered by the provider. Search the South Dakota Board of Medical and Osteopathic Examiners at https://www.sdbmoe.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.