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Infectious Disease

Alexander J. Lietz, MD

Works at hospitals in Harrisburg, IL · Herrin, IL · Carbondale, IL … · Illinois

Summary

Dr. Alexander J. Lietz, MD is an infectious disease doctor at 3314 Patriot Ct, Herrin, IL 62948. Phone: (618) 993-1591. Accepts Medicare assignment. In 2024, Alexander J. Lietz had 109 Original Medicare patients and 266 services. NPI 1790244713. 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.

  • Specialty: Infectious disease doctor (Medicare lists Infectious Disease)
  • Address: 3314 Patriot Ct, Herrin, IL 62948 · Directions (1 more location)
  • Phone: (618) 993‑1591
  • Medicare: Accepts Medicare assignment
  • Hospitals: Harrisburg Medical Center, Herrin Hospital, Memorial Hospital of Carbondale and 1 more
  • Group practice: Southern Illinois Medical Services NFP (+1 more)
  • Medical school: University Of Illinois College Of Med (chi/peor/rock/chm-Urb) · graduated 2019 (7 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Alexander J. Lietz, 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 Alexander J. Lietz accept Medicare assignment?
Yes. Medicare's clinician data says Alexander J. Lietz 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 Alexander J. Lietz see?
In 2024, CMS data shows 109 Original Medicare patients and 266 services for Alexander J. Lietz. This counts Original Medicare only and measures volume, not quality.
What is Alexander J. Lietz's NPI number?
1790244713. 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 Alexander J. Lietz, 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 patients109
Services billed to Medicare266
Different services or procedures16
Participating Medicare providerYes
Average age of these patients70

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)120 services
  2. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)71 services
  3. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)26 services
  4. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)12 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%
  • Arthritis73%
  • Diabetes63%
  • Anxiety57%
  • Chronic kidney disease53%

Hospitals where Alexander J. Lietz works

Medicare's Facility Affiliation Data lists Alexander J. Lietz 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.

  • Harrisburg Medical CenterHarrisburg, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140210
  • Herrin HospitalHerrin, IL · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 140011
  • Memorial Hospital of CarbondaleCarbondale, IL · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 140164
  • St Joseph Memorial HospitalMurphysboro, IL · Critical Access Hospital · Emergency services: listed by Medicare · CCN 141334

Practice locations

Addresses where Alexander J. Lietz is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Alexander J. Lietz as a member of these groups (CMS data updated October 2, 2026).

  • Southern Illinois Medical Services NFP334 clinicians in the group
  • 24 on Physicians PC272 clinicians in the group

Specialties

Find other Infectious Disease doctors in Illinois →

Other infectious disease doctors in Illinois

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

All infectious disease doctors in Illinois →

Other clinicians in Southern Illinois Medical Services NFP

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

Clinician information

CredentialMD
Medical schoolUniversity Of Illinois College Of Med (chi/peor/rock/chm-Urb)
Graduation year2019 (7 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1790244713
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