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About

Buffalo Medical Group (BMG) is a private healthcare provider in Buffalo, NY, founded in 1946 and serving as a multi-specialty hospital/clinic network. They offer telemedicine and virtual care, access to medical records, and travel advisory services, with a focus on patient and staff safety. BMG operates 4 offices in the Buffalo area, including its headquarters at 325 Essjay Rd, and lists services across many specialties, including hematology as part of its internal medicine/clinical offerings. For hematology-specific care in Tonawanda, confirm whether BMG has a hematology/oncology provider at a nearby Buffalo location or schedule a telemedicine hematology consult via their telemedicine services. Contact numbers: 716-630-1000, 716-630-2500, 716-630-2600, or 1-716-630-2551.

Clinic Type

Hematology

Address

295 Essjay Road, Williamsville, NY 14221

Phone

716-630-1059

Email

HR@BuffaloMedicalGroup.com

Opening Hours

Not published — contact the clinic to confirm hours.

Services Offered

  • Hematology
  • cancer care
  • chemotherapy infusion treatments
  • consultations and second opinions
  • financial counseling
  • imaging services
  • laboratory testing and services
  • patient care coordination
  • radiation therapy
  • treatment and management of hematological disorders
  • partnership with Roswell Park Cancer Community Practice for certain cancer care areas

Team

  • Robert M. Zielinski — M.D.
  • Hong Liu — M.D.
  • Yijun Cheng — M.D.
  • Gayatri Vaidyanathan — M.D.

Insurance & Payment

  • major insurance providers

We accept most major insurance providers; care coordinators can assist with insurance coverage and options.

Languages Spoken

FAQs

What services are offered by Buffalo Medical Group Hematology?

- Chemotherapy infusion treatments - Consultations and second opinions - Radiation therapy* - Treatment and management of hematological disorders - Imaging services - Laboratory testing and services - Patient care coordination - Financial counseling

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Yelp (General BMG): 2.3 stars (22 reviews)
  • Birdeye (Aggregate): 4.8 stars (2,877 reviews (Aggregate))

Patients praise

  • Comprehensive multispecialty services including one-stop care for diverse needs
  • Positive experiences with specific providers noted in broader group reviews

Common complaints

  • Difficulty with administrative processes and patient portals
  • Complaints regarding dismissive or unprofessional provider interactions
  • Challenges in communication and appointment scheduling
  • Frustration over network coverage changes and unexpected discharge from care

"My recent appointment with Dr. Joanne Cobler at Buffalo Medical Group was one of the most unprofessional and dismissive medical interactions I have experienced..."

Birdeye User Review

"I recently called to have my blood pressure meds refilled... I was informed that I was no longer a patient of hers because I did not respond to requests in the patient portal..."

BBB Complaint

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 11, 2026.

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