Lawrence K. Primis, MD

Medicare activity in 2024

Official CMS public-use data for Lawrence K. Primis, 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. Anesthesia for exam of colon using an endoscope (00812)110 services
2. Anesthesia for procedure on small and large bowel using an endoscope (00813)54 services
3. Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)47 services
4. Anesthesia for other procedure on large bowel using an endoscope (00811)43 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 cholesterol75%
• High blood pressure69%
• Arthritis54%
• Ischemic heart disease34%
• Diabetes30%
• Anxiety24%

Hospitals where Lawrence K. Primis works

Medicare's Facility Affiliation Data lists Lawrence K. Primis 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.

• Ns/Lij HS Southside HospitalBay Shore, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330043

Practice locations

Addresses where Lawrence K. Primis is enrolled with Medicare (CMS data updated October 2, 2026).

• 53 Brentwood RdBay Shore, NY 11706 (914) 666‑8866

Group practices

Medicare enrollment lists Lawrence K. Primis as a member of this group (CMS data updated October 2, 2026).

• North Shore - Lij Anesthesiology, PC1,003 clinicians in the group

Specialties

• Anesthesiologyprimary

Find other Anesthesiology doctors in New York →

Other anesthesiologists in Bay Shore

Clinicians with the same Medicare primary specialty in Bay Shore, NY — not a recommendation.

• Mehul Pragani, MD
• Nicola Bereanda, MD
• Herbert Jaspan, MD
• Carlos Alcala, MD
• Kenward Yue, MD
• Bisma Masroor, DO
• George L. Anis, MD
• Peter Bennardo, MD

All anesthesiologists in Bay Shore →

Other clinicians in North Shore - Lij Anesthesiology, PC

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

• Ellen Parietti-Strojan, CNA
• Robert Weber, CNA
• Daniel J. Gardner, CNA
• Michael A. Hershey, MD
• Robert Gitman
• Shalini G. Mathias, 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