NPPES file of Aug 9, 2026

Marek Jakub Siorek, M.D.

Vascular & Interventional Radiology Physician · Sioux Falls, SD

Marek Jakub Siorek, M.D. is a vascular & interventional radiology physician with a practice address in Sioux Falls, South Dakota, and NPI 1396995338, issued on Sep 26, 2008. Check the license (South Dakota 12762, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1396995338
Name
Marek Jakub Siorek
Credential
M.D.
Primary taxonomy
Vascular & Interventional Radiology Physician 2085R0204X
License number
12762 SD
Self-reported in NPPES; status is on the state search
Practice location
1325 S Cliff Ave, Sioux Falls, SD 57105
Phone
(206) 386-2121
Enumerated
Sep 26, 2008
Record last updated
Apr 6, 2022
Medicare enrollment
Enrolled (PECOS I20211020002729); accepts Medicare assignment
Medical or professional school
Sanford School Of Medicine Of University Of South Dakota, 2008
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1325 S Cliff Ave

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

  1. Colleen Achong, MDHospitalist Physician1841866340
  2. Comfort Agaba, MDInternal Medicine Physician1891221123
  3. Abdalah Ahmed, MDInternal Medicine Physician1457091993
  4. Mishka Ahmed, MDHospitalist Physician1285367979
  5. Mohammad Ahmed, M.DInternal Medicine Physician1528417821
  6. Jordan Ahrens, OTR/LOccupational Therapist1295442028

Verify Marek Jakub Siorek 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 12762
    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

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Industry payments in 2024: $464.75

19 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. The 3,457 providers of this specialty with any payment received $7,206.73 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Marek Siorek$464.75
  2. Specialty average$7,206.73

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Avera MckennanSioux Falls, SD

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Vascular & Interventional Radiology Physician providers in South Dakota

There are 7 vascular & interventional radiology physician records in South Dakota.

The 6 vascular & interventional radiology physician records with the nearest ZIP codes

  1. Austin Fletcher, M.D.Sioux Falls, SD 571041275028136
  2. Caleb Heiberger, MDSioux Falls, SD 571041386038917
  3. Terry Yeager, MDSioux Falls, SD 571041760444269
  4. Neal Khurana, MDDakota Dunes, SD 570491184919490
  5. Hasan Khan, MDAberdeen, SD 574011366002487
  6. Charles Voigt, M.D.Rapid City, SD 577011003927666

Common questions

What is Marek Jakub Siorek, M.D.'s NPI number?

Marek Jakub Siorek, M.D.'s National Provider Identifier (NPI) is 1396995338, issued on Sep 26, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Marek Jakub Siorek, M.D. located?

The NPPES record lists a practice address at 1325 S Cliff Ave, Sioux Falls, SD, 57105. Phone: (206) 386-2121. Providers update this record themselves, so call before visiting.

How can I verify Marek Jakub Siorek, M.D.'s license?

NPPES lists South Dakota license number 12762, 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. 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.