Placeholder Photo for Gary Grosner, MD

As a cardiac surgeon in Buffalo, NY, Dr. Gary Grosner performs complex surgeries on the blood vessels & heart to correct damage caused by disease or injury.


Reviews of Dr. Grosner
Dr. Grosner


See what patients are saying about Dr. Grosner.





  • Recommends
  • On Time
  • Friendly
  • Professional
  • Knowledgeable
  • Nice Office
  • Understandable
  • Helpful Staff

Performed my triple coronary bypass surgery, everything with the surgery to follow up visits went smoothly. He explains your condition, what and how he will correct it in language that you can understand along with visual aids. You feel very confident and calm with his expertise. In all it was a very good experience I would recommend him highly.

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Office of Dr. Grosner See Insurance
of Dr. Grosner


General Physician Sub Ii PLLC  

Accepting New Patients?

Yes, Dr. Gary Grosner is accepting new patients at this office.



100 High Street, Suite 362, Buffalo, NY 14203-1126

Office Details

Doctor Specialty Cardiac Surgery
Accepting New Patients? Yes
Languages Spoken English

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Insurance Accepted  

  • Medicare

About Dr. Grosner
Dr. Grosner



Dr. Gary Grosner graduated from University of Connecticut School of Medicine in 1982.

Dr. Grosner has one office in New York where he specializes in Cardiac Surgery.

Dr. Grosner works with three doctors including Dr. Janerio Aldridge and Dr. M Hashmat Ashraf.


Education & Training  


Hospital Affiliations

  • Kaleida Health
  • Eastern Niagara Hospital
  • Olean General Hospital

Languages Spoken  

  • English

Dr. Grosner's Medicare Fee‑for‑Service Data (2014)  

Please Note: The information displayed below is sourced from the 2014 Medicare Physician and Other Supplier National Provider Identifier (NPI) Aggregate Report. It's important to remember that the statistics below are not inclusive of all patients treated by Dr. Grosner, but only those who participate in Medicare.

  • Doctor participates in Medicare?: Yes 
  • Number of HCPCS Codes: 47 
  • Number of Services: 513 
  • Medical Suppress Indicator:  
  • Number of HCPCS Associated With Medical Services: 47 
  • Number of Medical Services: 513 
  • Number of Medicare Patients with Medical Services: 210 
  Medicare Patient Demographics
  • Total Number of Medicare Patients: 210 
  • Average Age of Medicare Patients: 74 
  • Number of Patients Under Age 65: 30 
  • Number of Patients Age 65 to 74: 70 
  • Number of Patients Age 75 to 84: 74 
  • Number of Patients Over Age 84: 36 
  • Number of Female Patients : 87 
  • Number of Male Patients: 123 
  • Number of Non-Hispanic White Patients: 186 
  • Number of Black or African American Patients: 12 
  • Number of Asian Pacific Islander Patients: 0 
  • Number of Hispanic Patients: 0 
  • Number of American Indian/Alaska Native Patients: 0 
  • Number of Patients with Race Not Elsewhere Classified: 0 
  • Number of Patients with Medicare Only Entitlement: 176 
  • Number of Patients with Medicare & Medicaid Entitlement: 34 
  Medicare Patient Condition Demographics
  • Percent of Patients with Atrial Fibrillation: 40% 
  • Percent of Patients with Alzheimer’s Disease or Dementia: 14% 
  • Percent of Patients with Asthma: 14% 
  • Percent of Patients with Cancer: 16% 
  • Percent of Patients with Heart Failure: 70% 
  • Percent of Patients with Chronic Kidney Disease: 51% 
  • Percent of Patients with Chronic Obstructive Pulmonary Disease: 39% 
  • Percent of Patients with Depression: 26% 
  • Percent of Patients with Diabetes: 56% 
  • Percent of Patients with Hyperlipidemia: 75% 
  • Percent of Patients with Hypertension (High Blood Pressure): 75% 
  • Percent of Patients with Ischemic Heart Disease: 75% 
  • Percent of Patients with Osteoporosis: 5% 
  • Percent of Patients with Rheumatoid Arthritis / Osteoarthritis: 42% 
  • Percent of Patients with Schizophrenia / Other Psychotic Disorders: 0% 
  • Percent of Patients with Stroke: 10% 
  Medicare Payments Data
  • Total Submitted Charge Amount: $604,911.94 
  • Total Medicare Allowed Amount: $331,166.68 
  • Total Medicare Payment Amount: $256,993.29 
  • Total Medicare Standardized Payment Amount: $276,557.91 
  • Total Medical Submitted Charge Amount: $604,911.94 
  • Total Medical Medicare Allowed Amount: $331,166.68 
  • Total Medical Medicare Payment Amount: $256,993.29 
  • Total Medical Medicare Standardized Payment Amount: $276,557.91 
  Medicare Prescription Drug Data
  • Drug Suppress Indicator: n/a 
  • Number of HCPCS Associated With Drug Services: 0 
  • Number of Drug Services: 0 
  • Number of Medicare Beneficiaries With Drug Services: 0 
  • Total Drug Submitted Charge Amount: $0.00 
  • Total Drug Medicare Allowed Amount: $0.00 
  • Total Drug Medicare Payment Amount: $0.00 
  • Total Drug Medicare Standardized Payment Amount: $0.00 
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