Aaron Timothy Althaus, MD
Orthopaedic Surgery Physician · Dakota Dunes, SD
Aaron Timothy Althaus, MD is an orthopaedic surgery physician with a practice address in Dakota Dunes, South Dakota, and NPI 1518195619, issued on Jun 26, 2009. Check the license (South Dakota 11279, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- Aaron Timothy Althaus
- Credential
- MD
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License numbers
- 11279 SD
MD-42778 IA
94-07232 KS
31149 NE
Self-reported in NPPES; status is on the state search - Practice location
- 575 N Sioux Point RD, Dakota Dunes, SD 57049
- Phone
- (605) 217-2667
- Enumerated
- Jun 26, 2009
- Record last updated
- Dec 10, 2025
- Fax
- (605) 217-2900
- Medicare enrollment
- Enrolled (PECOS I20200318002310); may accept Medicare assignment
- Medical or professional school
- University Of Iowa, Rj & L Carver College Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 113 in South Dakota → Look up another NPI →
Also registered at 575 N Sioux Point RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tyson AllenSurgical Physician Assistant1053911123
- Brittany Anderson, CNPFamily Nurse Practitioner1770969164
- Trisha Anderson, PA-CSurgical Physician Assistant1932734191
- Margaret Andriano-Hazel, PTPhysical Therapist1265128250
- Tiffany Becker, PTPhysical Therapist1699059246
- Chase Beiermann, PASurgical Physician Assistant1205362282
Verify Aaron Timothy Althaus 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 11279Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% more Medicare Part D claims than the average orthopaedic surgery physician in 2024
546 Medicare Part D claims for 213 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. 113 claims were for opioids.
Most prescribed
- Amoxicillin121 claims
- Cephalexin114 claims
- Oxycodone Hcl60 claims
- Celecoxib32 claims
- Clindamycin Hcl31 claims
- Omeprazole28 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: $99.34
2 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 15,003 providers of this specialty with any payment received $23,022.89 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
- Cnos PCWayne, NE
- Sports Rehab And Professional Therapy Associates IncStorm Lake, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Aaron Timothy Althaus among 113 orthopaedic surgery physician records in South Dakota
Aaron Timothy Althaus, MD is one of 113 orthopaedic surgery physician records with a practice address in South Dakota. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 71% of them.
- NPI issued2009 · 71% of these records are older, 28% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2009 · median 2005 among the 83 with a school on file
- Record last updated2025 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
20 orthopaedic surgery physician records list a practice address in Dakota Dunes
They are 20 of the 326 NPPES records with a practice address in Dakota Dunes, and 113 orthopaedic surgery physician records in South Dakota.
All 113 in South Dakota → Every provider in Dakota Dunes → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Benjamin Bissell, M.D.Dakota Dunes, SD 570491265582712
- Raymond Emerson, MDDakota Dunes, SD 570491720080856
- Michael Espiritu, MDDakota Dunes, SD 570491902932015
- Thomas Jacobson, MDDakota Dunes, SD 570491063415305
- Brian Johnson, M.D.Dakota Dunes, SD 570491417122391
- Daniel Kensinger, MDDakota Dunes, SD 570491679548267
- Ryan Meis, MDDakota Dunes, SD 570491053314385
- Steven Meyer, MDDakota Dunes, SD 570491780687020
Common questions
What is Aaron Timothy Althaus, MD's NPI number?
Aaron Timothy Althaus, MD's National Provider Identifier (NPI) is 1518195619, issued on Jun 26, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Aaron Timothy Althaus, MD located?
The NPPES record lists a practice address at 575 N Sioux Point RD, Dakota Dunes, SD, 57049. Phone: (605) 217-2667. Providers update this record themselves, so call before visiting.
How can I verify Aaron Timothy Althaus, MD's license?
NPPES lists South Dakota license number 11279, 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 Aaron Timothy Althaus, MD prescribe under Medicare Part D?
In 2024, Aaron Timothy Althaus, MD had 546 Medicare Part D claims for 213 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. 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.