Quick answers
- Does Darren A. Manthey accept Medicare assignment?
- Yes. Medicare's clinician data says Darren A. Manthey accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Darren A. Manthey see?
- In 2024, CMS data shows 34 Original Medicare patients and 46 services for Darren A. Manthey. This counts Original Medicare only and measures volume, not quality.
- What is Darren A. Manthey's NPI number?
- 1326059338. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Darren A. Manthey, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 34 |
|---|---|
| Services billed to Medicare | 46 |
| Different services or procedures | 6 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Emergency department visit with moderate level of medical decision making (99284)16 services
- Emergency department visit with low level of medical decision making (99283)14 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease47%
- Arthritis44%
- Atrial fibrillation41%
- Anxiety38%
Hospitals where Darren A. Manthey works
Medicare's Facility Affiliation Data lists Darren A. Manthey at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Avera Queen of PeaceMitchell, SD · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 431340
- Prairie Lakes Healthcare System, IncWatertown, SD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 430005
Practice locations
Addresses where Darren A. Manthey is enrolled with Medicare (CMS data updated October 2, 2026).
- 401 9th Ave NWWatertown, SD 57201 (605) 882‑7000
- 525 N Foster StMitchell, SD 57301
- 525 N Foster St, Hospital DeptMitchell, SD 57301 (605) 995‑2000
Group practices
Medicare enrollment lists Darren A. Manthey as a member of these groups (CMS data updated October 2, 2026).
- Avera Queen of Peace122 clinicians in the group
- Prairie Lakes Health Care System Inc109 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Watertown
Clinicians with the same Medicare primary specialty in Watertown, SD — not a recommendation.
Other clinicians in Avera Queen of Peace
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Minnesota Medical School |
| Graduation year | 2002 (24 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1326059338 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians