MERCY HOSPITAL OF BUFFALO
Medicare Clinicians for NPI 1164464921
General Acute Care Hospital in Buffalo, NY
Clinicians Billing Medicare Through This Organization CMS
Clinicians who reassign their Medicare billing to this organization, per CMS enrollment records.
Mercy Hospital Of Buffalo in Buffalo, NY bills Medicare for 497 clinicians across 38 Medicare specialties. The largest specialties are Nurse Practitioner with 136, Internal Medicine with 89 and Obstetrics/Gynecology with 56. Of these, 39 practice at this address and 322 within 10 miles. Search by name or filter by specialty; each name links to that clinician's NPI profile.
This page lists the 250 clinicians practicing nearest to this organization's location. All 497 are counted in the totals above.
Nurse Practitioner (75 of 136)
Buffalo, NY 14220
Buffalo, NY 14220
Buffalo, NY 14220
Internal Medicine (51 of 89)
Buffalo, NY 14203
Obstetrics/Gynecology (23 of 56)
Buffalo, NY 14210
Cardiovascular Disease (Cardiology) (17 of 43)
Certified Nurse Midwife (CNM) (9 of 14)
Buffalo, NY 14220
Gastroenterology (7 of 13)
General Surgery (6 of 10)
Pulmonary Disease (6 of 11)
Neurology (4 of 14)
Pediatric Medicine (4 of 10)
Physical Therapist in Private Practice (4 of 5)
Psychiatry (4 of 8)
Endocrinology (3 of 4)
Hospitalist (3)
Infectious Disease (3 of 4)
Orthopedic Surgery (3 of 9)
Thoracic Surgery (3 of 6)
Vascular Surgery (3 of 4)
Cardiac Electrophysiology (2 of 3)
Williamsville, NY 14221
Clinical Social Worker (2)
Critical Care (Intensivists) (2 of 16)
Family Practice (2 of 11)
Pathology (2)
Physical Medicine and Rehabilitation (2)
Podiatry (2)
Anesthesiology (1)
Gynecological Oncology (1)
Interventional Cardiology (1 of 2)
Neurosurgery (1)
Nuclear Medicine (1)
Ophthalmology (1)
Otolaryngology (1 of 3)
Undersea and Hyperbaric Medicine (1 of 4)
About this data
Medicare reassignment. A clinician who works for a hospital, clinic or medical group usually signs a Medicare reassignment (form CMS-855R). It lets the organization bill Medicare for the clinician's services and receive the payment. This page lists the clinicians whose reassignment to Mercy Hospital Of Buffalo appears in the CMS Revalidation Reassignment List.
Who is included. Clinicians who bill Medicare under their own NPI through this organization. A clinician can reassign to more than one organization, so the same name may also appear under other groups.
Nearest 250. The totals and specialty counts cover all 497 clinicians. The list shows the 250 whose practice address is closest to this NPI's location, so each Mercy Hospital Of Buffalo location shows its own nearest clinicians.
Addresses and phone numbers come from each clinician's own NPPES record, so they may point to another office or to the clinician's own practice.
Source: CMS Revalidation Reassignment List, October 2026 release; addresses, phone numbers and Medicare status from NPPES and PECOS. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.