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

Hospitalist

Peter J. Morreale Iii, MD

Works at hospitals in Saint Louis, MO · Missouri

Summary

Dr. Peter J. Morreale Iii, MD is a hospitalist at 1201 S Grand Blvd, Saint Louis, MO 63104. Phone: (314) 617-2000. Accepts Medicare assignment. In 2024, Peter J. Morreale Iii had 96 Original Medicare patients and 234 services. NPI 1750907283. 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 Peter J. Morreale Iii, 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 Peter J. Morreale Iii accept Medicare assignment?
Yes. Medicare's clinician data says Peter J. Morreale Iii 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 Peter J. Morreale Iii see?
In 2024, CMS data shows 96 Original Medicare patients and 234 services for Peter J. Morreale Iii. This counts Original Medicare only and measures volume, not quality.
What is Peter J. Morreale Iii's NPI number?
1750907283. 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 Peter J. Morreale Iii, 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 patients96
Services billed to Medicare234
Different services or procedures8
Participating Medicare providerYes
Average age of these patients72

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)123 services
  2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)48 services
  3. Hospital discharge day management, more than 30 minutes (99239)33 services
  4. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)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%
  • Chronic kidney disease61%
  • Arthritis60%
  • Depression57%
  • Heart failure56%

Hospitals where Peter J. Morreale Iii works

Medicare's Facility Affiliation Data lists Peter J. Morreale Iii 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 Peter J. Morreale Iii is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Peter J. Morreale Iii as a member of this group (CMS data updated October 2, 2026).

  • SSM Health Care Group940 clinicians in the group

Specialties

Find other Hospitalist doctors in Missouri →

Other hospitalists in Saint Louis

Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.

All hospitalists in Saint Louis →

Other clinicians in SSM Health Care Group

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

Clinician information

CredentialMD
Graduation year2020 (6 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1750907283
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