Dennis Thum
Urology Physician · Sioux Falls, SD
Dennis Thum is a urology physician with a practice address in Sioux Falls, South Dakota, and NPI 1245619543, issued on May 20, 2015. Check the license (South Dakota 11021, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- Dennis Thum
- Primary taxonomy
- Urology Physician 208800000X
- License number
- 11021 SD
Self-reported in NPPES; status is on the state search - Practice location
- 201 W 69TH St, Sioux Falls, SD 57108
- Phone
- (605) 336-0635
- Enumerated
- May 20, 2015
- Record last updated
- Jul 17, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (605) 271-0543
- Medicare enrollment
- Enrolled (PECOS I20190226000192); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 2013
- Entity
- Type 1 · individual
8 nearest urology physician records → All 48 in South Dakota → Look up another NPI →
Also registered at 201 W 69TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Arend, MDUrology Physician1548478118
- Nathan Bockholt, M.D.Urology Physician1295901460
- Patricia Bultsma, FNP/CFamily Nurse Practitioner1841258159
- Amber Chambers, PA-CPhysician Assistant1497720254
- Jeffrey Edman, MDUrology Physician1003475591
- Michael Gillett, M.D.Urology Physician1619954542
Verify Dennis Thum in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Dakota Board of Medical and Osteopathic Examiners
Search for license 11021Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% fewer Medicare Part D claims than the average urology physician in 2024
1,230 Medicare Part D claims for 287 beneficiaries, against an average of 1,340 among the 10,782 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Tamsulosin Hcl635 claims
- Finasteride229 claims
- Myrbetriq121 claims
- Methenamine Hippurate69 claims
- Potassium Citrate Er35 claims
- Cephalexin23 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.
Industry payments in 2024: $198.76
5 payments; by number, the most common kind was food and beverage; the largest payer was Procept BioRobotics Corporation. The 9,340 providers of this specialty with any payment received $3,800.04 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Sanford Health NetworkWorthington, MN
- Urology Specialists CharteredSioux Falls, SD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dennis Thum among 48 urology physician records in South Dakota
Dennis Thum is one of 48 urology physician records with a practice address in South Dakota. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 85% of them.
- NPI issued2015 · 85% of these records are older, 13% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2013 · median 2006 among the 27 with a school on file
- Record last updated2018 · 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 208800000X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Urology Physician providers in South Dakota
There are 48 urology physician records in South Dakota.
All 48 in South Dakota → Every provider in Sioux Falls → Urology Physician nationwide →
The 8 urology physician records with the nearest ZIP codes
- David Arend, MDSioux Falls, SD 571081548478118
- Nathan Bockholt, M.D.Sioux Falls, SD 571081295901460
- Jeffrey Edman, MDSioux Falls, SD 571081003475591
- Michael Gillett, M.D.Sioux Falls, SD 571081619954542
- Alex Hannemann, MDSioux Falls, SD 571081184251605
- Darlys Hofer, MDSioux Falls, SD 571081164470076
- Matthew Larson, MDSioux Falls, SD 571081346703634
- Brian Lindaman, MDSioux Falls, SD 571081912121229
Common questions
What is Dennis Thum's NPI number?
Dennis Thum's National Provider Identifier (NPI) is 1245619543, issued on May 20, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Dennis Thum located?
The NPPES record lists a practice address at 201 W 69TH St, Sioux Falls, SD, 57108. Phone: (605) 336-0635. Providers update this record themselves, so call before visiting.
How can I verify Dennis Thum's license?
NPPES lists South Dakota license number 11021, 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.
How much does Dennis Thum prescribe under Medicare Part D?
In 2024, Dennis Thum had 1,230 Medicare Part D claims for 287 beneficiaries; the average among urology physician prescribers was 1,340. Part D covers Medicare prescriptions only.
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.