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Avera Internal Medicine

4.9 out of 5 · 147 reviews

Internal Medicine • Deadwood, SD

About

Avera Internal Medicine in Pierre, SD offers internal medicine services including yearly checkups, disease management, preventive screenings, immunizations, geriatric care, mammography, radiology and imaging, laboratory services, and an on-campus pharmacy. The clinic is located at 801 E Sioux Ave, Floor 3, and is part of Avera St. Mary's Hospital.

Clinic Type

Internal Medicine

Address

801 E Sioux Ave, Floor 3, Pierre, SD 57501

Phone

+1-605-224-5901

Email

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Opening Hours

Mon-Fri 8 AM – 5 PM

Services Offered

  • Internal Medicine Services
  • Yearly Checkups
  • Disease Management
  • Preventive Screenings
  • Immunizations
  • Geriatric Care
  • Mammography
  • Radiology & Imaging
  • On-Campus Pharmacy
  • Meet Our Team

Team

  • Robert L. Allison — MACP, MD
  • Stacy S. Cwach — PA-C
  • Allison J. Johnson — CNP
  • Alyssa Etzkorn — PA-C
  • Andras Szabo — MD
  • Darrell W. Plumage — MD

Insurance & Payment

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Languages Spoken

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FAQs

Meet Our Team

Individual provider listings with contact numbers are included (e.g., team members with phone numbers like 605-945-5277, 605-224-2708).

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Avera Provider Profile: 4.9/5 (provider-level) (147 ratings)
  • Healthgrades (Avera St. Mary's Hospital): 66% (Patient recommendation)

Patients praise

  • High patient ratings for specific providers, such as Dr. Darrell Plumage
  • Efficient and professional experiences in urgent care settings
  • Positive feedback for medical competency and clear communication from doctors

Common complaints

  • Dissatisfaction with pain management protocols
  • Billing issues and lack of centralized billing coordination
  • Reports of rude or dismissive staff in certain departments
  • Perceived lack of compassion in behavioral health services

"Dr Plumage is the best. 100% trust/ value him. In anything serious, I want his guidance."

— Avera Provider Profile (Dr. Darrell Plumage)

"Horrible pain management treatment. They won't give strong enough pain medication... Your doctors are terrible."

— Online Business Review Site

"Behind in technoogy causing major hassles for the customer and the office staff treats you like garbage."

— Online Business Review Site

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 11, 2026.

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