Lars-Kristofer N. Peterson, MD

Medicare activity in 2024

Official CMS public-use data for Lars-Kristofer N. Peterson, 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 50 minutes (99233)178 services
2. Critical care, first 30-74 minutes (99291)130 services
3. Emergency department visit with high level of medical decision making (99285)57 services
4. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)42 services
5. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)31 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%
• Ischemic heart disease66%
• Heart failure56%
• Diabetes53%
• Chronic kidney disease50%

Hospitals where Lars-Kristofer N. Peterson works

Medicare's Facility Affiliation Data lists Lars-Kristofer N. Peterson 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.

• Kaleida HealthBuffalo, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330005

Practice locations

Addresses where Lars-Kristofer N. Peterson is enrolled with Medicare (CMS data updated October 2, 2026).

• 100 High StBuffalo, NY 14203 (716) 859‑5600
• 445 Tremont StNorth Tonawanda, NY 14120 (716) 694‑4500
• 445 Tremont St, Box 0705N Tonawanda, NY 14120 (716) 694‑4500
• 462 Grider StBuffalo, NY 14215 (716) 898‑3478

Group practices

Medicare enrollment lists Lars-Kristofer N. Peterson as a member of these groups (CMS data updated October 2, 2026).

• Kaleida Health236 clinicians in the group
• University Emergency Medical Services Inc.95 clinicians in the group

Specialties

• Emergency Medicineprimary

Find other Emergency Medicine doctors in New York →

Other emergency medicine doctors in Buffalo

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

• Daniel Mirsch, DO
• Brian Monaco, MD
• Jessica M. Strauss, MD
• Alexander S. Ljungberg, DO
• Jennifer Caldwell, DO
• Kevin A. Vinokur, DO
• Mateen A. Haroon, DO
• Kaori P. Tanaka, DO

All emergency medicine doctors in Buffalo →

Other clinicians in Kaleida Health

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

• Daniel Woo, MD
• Lisa N. Shea
• Victor S. Regenbogen, MD
• Eric R. Weidert, DO
• Maria T. Cartagena, MD
• Joshua A. Nazirbage, 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