Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Emergency Medicine

Justin L. Orren, DO

Works at hospitals in Rapid City, SD · Spearfish, SD · South Dakota

Summary

Dr. Justin L. Orren, DO is an emergency medicine doctor at 1440 N Main St, Spearfish, SD 57783. Phone: (605) 644-4000. Accepts Medicare assignment. In 2024, Justin L. Orren had 306 Original Medicare patients and 518 services. NPI 1831712108. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Justin L. Orren, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Justin L. Orren accept Medicare assignment?
Yes. Medicare's clinician data says Justin L. Orren 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 Justin L. Orren see?
In 2024, CMS data shows 306 Original Medicare patients and 518 services for Justin L. Orren. This counts Original Medicare only and measures volume, not quality.
What is Justin L. Orren's NPI number?
1831712108. 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 Justin L. Orren, 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 patients306
Services billed to Medicare518
Different services or procedures27
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)170 services
  2. Emergency department visit with moderate level of medical decision making (99284)120 services
  3. Emergency department visit with high level of medical decision making (99285)111 services
  4. Emergency department visit with low level of medical decision making (99283)48 services
  5. Critical care, first 30-74 minutes (99291)30 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 cholesterol72%
  • Arthritis51%
  • Ischemic heart disease42%
  • Anxiety39%
  • Atrial fibrillation36%

Hospitals where Justin L. Orren works

Medicare's Facility Affiliation Data lists Justin L. Orren 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.

Practice locations

Addresses where Justin L. Orren is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Justin L. Orren as a member of this group (CMS data updated October 2, 2026).

  • Monument Health Network Inc160 clinicians in the group

Specialties

Find other Emergency Medicine doctors in South Dakota →

Other emergency medicine doctors in South Dakota

Clinicians with the same Medicare primary specialty in South Dakota — not a recommendation.

All emergency medicine doctors in South Dakota →

Other clinicians in Monument Health Network Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialDO
Medical schoolUniversity Of Pikeville, Kentucky College Of Osteopathic Med
Graduation year2020 (6 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1831712108
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians