Aaron Timothy Althaus, MD
Orthopedic Surgery · Dakota Dunes, SD
At a glance
575 N Sioux Point Rd, Dakota Dunes, SD 57049-5312
Published activity: Hip replacement · Knee replacement · Lower limb (leg) arthroscopy (minimally invasive joint repair). View counts and coverage
NPPES record updated Dec 10, 2025. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
575 N Sioux Point RdDakota Dunes, SD 57049-5312
Additional reported practice locations
Ms #3017, 3901 Rainbow Blvd.University Of Kansas Medical Center
Kansas City, KS 661600001
Phone: 9135887590
Fax: 9135888186
Education & affiliations
- Medical / professional school
- University Of Iowa, Rj & L Carver College Of Medicine
- Graduation year
- 2009
- CMS specialties
- Orthopedic Surgery · Sports Medicine
Practice groups
Reported hospital affiliations
- Cherokee Regional Medical Center Cherokee, IA
- Dunes Surgical Hospital Dakota Dunes, SD
- Floyd Valley Healthcare Le Mars, IA
- Orange City Area Health System Orange City, IA
- St Lukes Regional Medical Center Sioux City, IA
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
| Procedure category | Published Medicare activity |
|---|---|
| Hip replacement | 37 |
| Knee replacement | 71 |
| Lower limb (leg) arthroscopy (minimally invasive joint repair) | 1-10 |
| Removal of tissue | 1-10 |
| Upper limb (arm) arthroscopy (minimally invasive joint repair) | 31 |
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Orthopedic Surgery
- Taxonomy code
- 207X00000X
- Enumeration date
- Jun 26, 2009
- Record updated
- Dec 10, 2025
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
207X00000X
License reported: 31149 NE
207X00000X
License reported: 94-07232 KS
207X00000X
License reported: MD-42778 IA
207X00000X · Primary
License reported: 11279 SD
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
575 N Sioux Point RdDakota Dunes, SD 57049-5312
- Phone
- (605) 217-2667
- Fax
- (605) 217-2900
Mailing address
575 N SIOUX POINT ROADDAKOTA DUNES, SD 570495312
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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