Joshua H. St. Louis, MD

Medicare activity in 2024

Official CMS public-use data for Joshua H. St. Louis, 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.

Most frequent services

1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)42 services
2. Hospital discharge day management, 30 minutes or less (99238)13 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%
• Diabetes75%
• High cholesterol63%
• Depression53%
• Anxiety47%
• Chronic kidney disease45%

Hospitals where Joshua H. St. Louis works

Medicare's Facility Affiliation Data lists Joshua H. St. Louis 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.

• Merrimack Health Lawrence HospitalLawrence, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220010

Practice locations

Addresses where Joshua H. St. Louis is enrolled with Medicare (CMS data updated October 2, 2026).

• 150 Park StLawrence, MA 01841 (978) 685‑1770
• 55 Fruit StBoston, MA 02114 (617) 724‑0287

Group practices

Medicare enrollment lists Joshua H. St. Louis as a member of these groups (CMS data updated October 2, 2026).

• Massachusetts General Physicians Organization Inc3,558 clinicians in the group
• Greater Lawrence Family Health Center Inc122 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in Massachusetts →

Other family doctors in Lawrence

Clinicians with the same Medicare primary specialty in Lawrence, MA — not a recommendation.

• Shean L. Barrett, MD
• Paul Esielionis, MD
• Katrin Schneck, MD
• Karen I. Hunt, MD
• David M. Gilman
• Alyssa Griffin, MD
• Nirmala Sambangi, MD
• Jennifer A. Somers, MD

All family doctors in Lawrence →

Other clinicians in Massachusetts General Physicians Organization Inc

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

• Gaurav Cheraya, MD
• David J. Lucier Jr.
• Jin B. Chae, MD
• Andrew L. Judelson, MD
• Jilan Shimberg, MD
• Paul G. Firth, MD

Clinician information

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