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Emergency Medicine

Conrad De Los Santos, MD

Works at hospitals in Alton, IL · Saint Peters, MO · Belleville, IL … · Illinois, Missouri, Alabama

Summary

Dr. Conrad De Los Santos, MD is an emergency medicine doctor at 1 Memorial Dr, Alton, IL 62002. Phone: (618) 463-7311. Accepts Medicare assignment. In 2024, Conrad De Los Santos had 241 Original Medicare patients and 346 services. NPI 1952443194. 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 Conrad De Los Santos, 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 Conrad De Los Santos accept Medicare assignment?
Yes. Medicare's clinician data says Conrad De Los Santos 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 Conrad De Los Santos see?
In 2024, CMS data shows 241 Original Medicare patients and 346 services for Conrad De Los Santos. This counts Original Medicare only and measures volume, not quality.
What is Conrad De Los Santos's NPI number?
1952443194. 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 Conrad De Los Santos, 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 patients241
Services billed to Medicare346
Different services or procedures15
Participating Medicare providerYes
Average age of these patients72

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)159 services
  2. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)96 services
  3. Emergency department visit with moderate level of medical decision making (99284)52 services
  4. Critical care, first 30-74 minutes (99291)21 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%
  • Arthritis53%
  • Ischemic heart disease49%
  • Diabetes48%
  • Chronic kidney disease48%

Hospitals where Conrad De Los Santos works

Medicare's Facility Affiliation Data lists Conrad De Los Santos 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.

  • Alton Memorial HospitalAlton, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140002
  • Barnes-Jewish St Peters HospitalSaint Peters, MO · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 260191
  • Memorial HospitalBelleville, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140185
  • Missouri Baptist Sullivan HospitalSullivan, MO · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 261337
  • St. Vincent's EastBirmingham, AL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 010011

Practice locations

Addresses where Conrad De Los Santos is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Conrad De Los Santos as a member of these groups (CMS data updated October 2, 2026).

  • Paragon Contracting Services LLC414 clinicians in the group
  • Southeastern Emergency Physicians of Memphis LLC94 clinicians in the group
  • Emergency Services Midwest SC37 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Illinois →

Other emergency medicine doctors in Alton

Clinicians with the same Medicare primary specialty in Alton, IL — not a recommendation.

All emergency medicine doctors in Alton →

Other clinicians in Paragon Contracting Services LLC

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

Clinician information

CredentialMD
Graduation year1993 (33 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1952443194
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