NPI registry status
Active
2026 NPPES data Urology Physician NPI 1245619543
Verify on CMS → Dennis Thum
Urology Physician in Sioux Falls, South Dakota.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 13,606 in Urology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
1K
Medicare Part D claims · 287 beneficiaries · Urology Physician avg: 1K
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$198.76
5 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Dennis Thum filed 1,230 Medicare Part D claims in 2024 as a Urology Physician in Sioux Falls, South Dakota, prescribing 89% generic.
- 1K
- Part D claims, 2024
- 89%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥78th
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Dennis Thum
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1245619543), first enumerated 05/20/2015.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,230 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
2 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$198.76 in reported industry payments (5 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1245619543 · Urology Physician
NPI-10 · ENUM-MID · TAX-MID · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1245619543
- ENUM-MID 2015
- TAX-MID 14K Urology Physician
- RX-MID 1,230
- BOOK-THIN 44 in South Dakota
- PHOTO-ENUM Danielle Velez Leitn… · 2015
Dennis Thum's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
1,230 ≥ 78th percentile 78% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Dennis Thum practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Dennis Thum?
Quality data not reportedPrimary specialty
Urology Physician
Medicare Part D claims
1,230 9% vs specialty avg
Specialty distribution in South Dakota
How Urology Physician compares to other specialties among South Dakota providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Urology Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1245619543 |
|---|---|
| Specialty | Urology Physician |
| Gender | Male |
| NPI Issued | 05/20/2015 |
Hospital and facility affiliations
Facilities where Dennis Thum bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Sanford Health Network
Worthington, MN
Urology Specialists Chartered
Sioux Falls, SD
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Dennis Thum. Source: openpaymentsdata.cms.gov.
Total received
$199
Largest payer
PROCEPT BioRobotics Corporation
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Typical
Dennis Thum - brand share 11.0%
Urology Physician average
11% brand-name claims vs 89% generic, on 1,230 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
1,230
Total Claims
$80K
Total Drug Cost
287
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,352.633
- Total Day Supply
- 67,264
- Brand vs Generic
- 11% brand / 89% generic
- Brand Drug Cost
- $60K
- Generic Drug Cost
- $20K
- Antibiotic Claims
- 68
Patient Demographics
- Average Patient Age
- 74.7 years
- Avg HCC Risk Score
- 1.32
- Gender Split
- 16% female / 84% male
- Age Distribution
- <65: 23, 65-74: 117, 75-84: 107, 85+: 40
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Dennis Thum prescribes most
Top Medicare Part D drugs by claim count, 2024
- Tamsulosin Hcl
Tamsulosin Hcl
635 claims
- Finasteride 229
Finasteride
229 claims
- Myrbetriq 121
Myrbetriq
121 claims
- Methenamine Hippur… 69
Methenamine Hippurate
69 claims
- Potassium Citrate Er 35
Potassium Citrate Er
35 claims
- Cephalexin 23
Cephalexin
23 claims
- Sulfamethoxazole-T… 18
Sulfamethoxazole-Trimethoprim
18 claims
- Oxybutynin Chlorid… 16
Oxybutynin Chloride Er
16 claims
| Drug | Claims |
|---|---|
| Tamsulosin Hcl | 635 |
| Finasteride | 229 |
| Myrbetriq Mirabegron | 121 |
| Methenamine Hippurate | 69 |
| Potassium Citrate Er Potassium Citrate | 35 |
| Cephalexin | 23 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 18 |
| Oxybutynin Chloride Er Oxybutynin Chloride | 16 |
| Estradiol | 15 |
| Nitrofurantoin Mono-Macro Nitrofurantoin Monohyd/M-Cryst | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Urology Physician Overview
How Dennis Thum fits within the Urology Physician landscape nationally.
13,606
Urology Physician Providers in US
54
States with Urology Physician
1,354
Avg Claims per Provider
Dennis Thum's 1,230 claims are below the specialty average of 1,354.
Nationwide Urology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Thum, both outside South Dakota so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2015)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Urology Physician Providers in South Dakota
Other clinicians with the same primary specialty enrolled in South Dakota, drawn from the same CMS NPPES roster as Thum.
One of 44 Urology Physician providers enrolled in South Dakota, 5 are shown here.
Dr. Christopher Adducci
MD
Watertown, SD
Dr. Adam Althaus
M.D.
Dakota Dunes, SD
Dr. David Arend
MD
Sioux Falls, SD
Dr. Dileep Bhat
M D
Mitchell, SD
Dr. Nathan Bockholt
M.D.
Sioux Falls, SD
Compare Urology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Dennis Thum's specialty? ▼
Dennis Thum specializes in Urology Physician and practices in Sioux Falls, South Dakota.
How much does Dennis Thum prescribe under Medicare Part D? ▼
In 2024, Dennis Thum wrote 1,230 Medicare Part D claims totaling $80K in drug costs for 287 beneficiaries.
Where is Dennis Thum located? ▼
Dennis Thum is located at 201 W 69TH ST, Sioux Falls, SD, 57108. Phone: (605) 336-0635.
What is Dennis Thum's NPI number? ▼
Dennis Thum's National Provider Identifier (NPI) is 1245619543, issued on 05/20/2015.
Does Dennis Thum prescribe more brand-name or generic drugs? ▼
Dennis Thum's prescribing is 11% brand-name and 89% generic drugs by claim count, with $60K in brand drug costs.
How many Urology Physician providers are there in the US? ▼
There are 13,606 Urology Physician providers across 54 states in the US. The average Urology Physician provider writes 1,354 Medicare Part D claims per year.
What drugs does Dennis Thum prescribe most often? ▼
Based on 2024 Medicare Part D data, Dennis Thum's most frequently prescribed drugs include Tamsulosin Hcl, Finasteride, Myrbetriq. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Dennis Thum accept Medicare? ▼
Dennis Thum appears in CMS Medicare data with 1,230 Part D claims and 287 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Dennis Thum's credentials? ▼
Dennis Thum's NPI is 1245619543. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.