John M. Leistner Jr., MD

Medicare activity in 2024

Official CMS public-use data for John M. Leistner Jr., 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. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)275 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)108 services
3. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)35 services
4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)11 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 pressure70%
• Arthritis50%
• Anxiety31%
• Diabetes28%
• Ischemic heart disease25%

Hospitals where John M. Leistner Jr. works

Medicare's Facility Affiliation Data lists John M. Leistner Jr. 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
• Kenmore Mercy HospitalKenmore, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330102
• Our Lady of Lourdes Memorial Hospital, IncBinghamton, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330011
• Sisters of Charity HospitalBuffalo, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330078
• United Health Services Hospitals, IncBinghamton, NY · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 330394

Practice locations

Addresses where John M. Leistner Jr. is enrolled with Medicare (CMS data updated October 2, 2026).

• 2914 Elmwood AveKenmore, NY 14217 (716) 875‑6700
• 2914 Elmwood Ave, Suite 1Kenmore, NY 14217

Group practices

Medicare enrollment lists John M. Leistner Jr. as a member of this group (CMS data updated October 2, 2026).

• Kenmore Family Medicine LLP5 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in New York →

Other family doctors in Kenmore

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

• R Keith Felstead, DO
• Derek Gallucci, DO
• Joseph F. Fasanello, MD
• Briana Niland
• Jonathan Kessler
• Andrew J. Harbison, DO
• David K. Khatib, DO
• Darla M. Lane, DO

All family doctors in Kenmore →

Other clinicians in Kenmore Family Medicine LLP

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

• Jill C. Stein, NP
• Paul W. Campana, DO
• Jonathan Kessler
• Lisa M. Mendonza, 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