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Below you will find our dedicated team of corporate officers, board members and administrators. These individuals play intricate key roles for the success of GBUAHN.

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Board of Directors
Board Members

Board of Directors

Raul Vazquez, M.D. F.A.A.F.P.Raul Vazquez, M.D. F.A.A.F.P.
Urban Family Practice

Dr. Raul Vazquez is a primary care physician who opened Urban Family Practice on Buffalo’s Lower West Side in 1996. In 2016, the National Committee for Quality Assurance (NCQA) announced that Urban Family Practice of Buffalo had received level three NCQA Patient-Centered Medical Home (PCMH). Level three is the highest degree of recognition available.

Recognizing the need for coordinated, person-centered care for Medicaid recipients with multiple chronic medical conditions, he formed the Greater Buffalo United Accountable Healthcare Network (GBUAHN). The New York State Department of Health approved the designation of GBUAHN as a provider-lead Medicaid health home in 2012.

As president of GBUAHN, Dr. Vazquez leads a team of dedicated professionals in the medical and business fields. He has set the strategy and direction for the fast-track growth of GBUAHN. Under his guidance, GBUAHN has grown to serve several thousand members and employs a staff of approximately 150 individuals. GBUAHN is one of the largest minority employers in Western New York.

In June 2009, Dr. Vazquez was nominated by Governor David Paterson, and approved by the New York State Senate, to serve as a member of the New York State Medicaid Advisory Committee. In June 2012, Governor Andrew Cuomo and the New York Senate approved Dr. Vazquez to serve on the Minority Health Council.

He has won more than 20 awards for his accomplishments in business, the medical field and advocacy groups. Dr. Vazquez has served boards for numerous organizations, including: Upstate New York Transplant Services, HEALTHeLINK and WNED-TV.

Dr. Vazquez received his undergraduate degree from Fordham University and received his medical degree from the State University of New York at Buffalo.

Dr. Vazquez's CV (PDF) Wikipedia Listing

Kenneth Gayles, M.D. F.A.C.C.Kenneth L. Gayles, M.D. F.A.C.C.
Gayles Medical Center
Vice President

Dr. Kenneth Lee Gayles is a cardiovascular specialist who treats over 6,000 cardiac care patients annually. He is the owner of Gayles Medical practice. Dr. Gayles is board certified in cardiovascular diseases and internal medicine and brings to GBUAHN over four decades of experience diagnosing and treating congenital heart defects, heart failure, coronary artery disease, and other heart problems. He was the first African-American invasive cardiologist in Western New York.

As senior vice president of GBUAHN, Dr. Gayles’ mission is to deliver a comprehensive health care system targeting the underserved community in Western New York. His goal for GBUAHN is the elimination of disparity in health care delivery and outcomes in the Western New York community.

Dr. Gayles served as chairman of the board of Sheehan Memorial Hospital from 1990 -1991 and served as medical director until 1995. He earned his Bachelor of Science degree in biology and his medical degree from the State University of New York at Buffalo. He completed his internal medicine residency and cardiology fellowship at SUNY Buffalo.

Dr. Gayles has served as treasurer of the National Association of Black Cardiologists, and as vice president of the National Medical Association - Buffalo Chapter. His other community affiliations include the Buffalo Philharmonic Board of Directors and the Buffalo PREP Board of Directors. He is a trustee for the First Shiloh Baptist Church and has served as chief of medicine at Deaconess Hospital. He is also member of the Board of Trustees of the UB Foundation.

Board Members

Kenton Forte, M.D.Kenton Forte, M.D.
Kenton Forte MD
Buffalo, NY

Dr. Kenton Forte has been practicing internal medicine at the Heart Beat Center of WNY for well over 20 years. He also specializes in cardiovascular disease. His hospital affiliations are Buffalo General Hospital and ECMC.

In addition to practicing medicine at the Heartbeat Center of WNY, Dr. Forte has been an assistant clinical professor at the State University of New York at Buffalo for more than two decades.

Dr. Forte is a member of eleven professional societies, including the American Heart Association, American Society of Internal Medicine, and the Erie County Medical Society. He has written four publications for various academic journal and presented at numerous symposiums and conventions on his expertise in cardiology.

Dr. Forte completed his residency and fellowship in internal medicine and cardiology at the State University of New York at Buffalo.

Jesslyn Perry, M.D.Jesslyn Perry, M.D.
Urban Family Practice
Buffalo, NY

Dr. Jesslyn Perry has been a physician since 1995. After working at Sheehan Hospital as an internist from 1999 -2001, she opened Ella Perry, M.D., located at 191 North Street in Buffalo, N.Y. She named her practice after her mother.

Dr. Perry specializes in family and internal medicine. She is affiliated with Women and Children’s Hospital of Buffalo and Buffalo General Hospital. She is board certified in Internal medicine. Dr. Perry is a member of the National Medical Association (NMA).

Dr. Perry is a graduate of the State University of New York at Buffalo School of Medicine and Biomedical Sciences.

George Haddad, M.D.George Haddad, M.D.
George Haddad MD
Tonawanda, NY

Dr. George Haddad is N.Y. State licensed and board certified in internal medicine. He has been in private practice since 1994. He is affiliated with Kenmore Mercy Hospital and Catholic Medical Partners.

Dr. Haddad previously had affiliations with Sheehan Hospital and Coastal Emergency Room Services.

Dr. Haddad attended the Catholic University of Louvain, Belgium, where he graduated with honorable distinction.

Winston Douglas, M.D.Winston Douglas, M.D.
Douglas Primary Care
Buffalo, NY

Dr. Winston Douglas is certified in internal medicine by the American Board of Internal Medicine (ABIM). Dr. Douglas is well-versed in the health problems of aging populations with Alzheimer's disease, Parkinson's disease, heart conditions and pulmonary diseases.

As treasurer of GBUAHN, Dr. Douglas develops strategies regarding short and long term financial vitality.

Dr. Douglas served as medical director of Waterfront Nursing Home. He is the former chair of the Pharmacy and Therapeutic Committee at Sheehan Health Services, and the former medical director of N.Y. State’s Orleans Correctional facility. Dr. Douglas is a member of the National Medical Association - Buffalo Chapter and he is the current medical director at Alcohol and Drug Dependency Services.

Dr. Douglas received his medical degree from State University of New York at Buffalo School of Medicine.

Dwight Lewis, M.D.Dwight Lewis, M.D.
Main Primary Care
Buffalo, NY

Dr. Dwight Lewis is an internal medicine specialist with a subspecialty in sepsis blood poisoning. He opened his medical practice, Main Primary Care, in 1994 in Buffalo’s University District. Dr. Lewis is an advocate of screenings, wellness check-ups, vaccinations and healthy living in order to prevent disease and help his patients stay well.

As secretary of GBUAHN, Dr. Lewis manages the records and administrative functions of the GBUAHN Board of Directors.

Dr. Lewis graduated in 1991 from the State University of New York at Buffalo School of Medicine and Biomedical Sciences. He is admitted to Sisters of Charity Hospital and Kaleida Health - Buffalo General.

Dr. Lewis is a member of the National Medical Association (NMA).

Joseph Serghany, M.D.Joseph Serghany, M.D.
WNY Imaging Group
Buffalo, NY

Joseph Serghany attended the American University of Beirut Medical School in 1988 and graduated with an MD degree. He then completed his Radiology residency at the University at Buffalo in 1995. Dr.Serghany joined the universitys’ radiology practice at ECMC until the year 2000, where he was an assistant program director for the Radiology Residency program. Currently he is the Co-founder and President of WNY imaging group, with offices in Lockport, Kenton, and Buffalo, NY.

Dr Serghany's CV (PDF)

Nicolas P. Saikali, M.D.Nicolas P. Saikali, M.D.
Dent Institute
Amherst, NY

Dr. Saikali is an Attending Neurologist at DENT, seeing patients for headache treatment and traumatic brain injury, as well as neuroimaging diagnostics. Dr. Saikali is also the Director of DENT's Headache Fellowship.

During his residency and fellowship training, he was involved in multiple research projects involving headache and sleep medicine. He is a Clinical Assistant Professor of Neurology at UB School of Medicine and Biomedical Sciences where he is involved in teaching medical students as well as neurology residents.


Patients' Choice Award 2010, 2011, 2012, 2014, 2015, 2016
Compassionate Doctor Award - 5 year Honoree 2015

Ethan Gable, M.D.Ethan Gable, M.D.
Jericho Road Community Health Center
Buffalo, NY

Obstetrics & Gynecology

Dr. Gable's CV (PDF)

Robert Erickson, D.O.Robert Erickson, D.O.
Inspired Health Group
Orchard Park, NY

Dr. Erickson started off as a biology teacher, earning his Bachelor of Science degree from St. Bonaventure University. Soon after, he quickly shifted career paths and enrolled at Chicago College of Osteopathic Medicine, graduating in 1987. Dr. Erickson then attended University at Buffalo, where he enrolled in the State University of New York Family Practice Residency Program.

Upon successful completion of his Residency Program, Dr. Erickson worked at Buffalo General Hospital as a physician in Urgent Care. During this time, he was also chairman of the board and Chief Executive Officer of Buffalo Family Practice Medical Associates along with Promedicus Health Group.

Since then Dr. Erickson and his wife, Dr. Jennifer Erickson, have developed their own private practice. In 2001 they started Inspired Health Group. Since 2001, Dr. Erickson has expanded his practice by including various providers and staff. By including other key components to his practice, Dr. Erickson has greatly improved the realm of care that is provided to patients as well as the quality of care Inspired Health Group seeks to offer.

Richard Charles, M.D.Richard Charles, M.D.
General Physician PC
Buffalo, NY

Certified by the American Board of Internal Medicine, Dr. Charles is a summa cum laude graduate of the University at Buffalo (UB) School of Pharmacy, and earned his medical degree summa cum laude at the UB School of Medicine and Biomedical Sciences. He completed his training in internal medicine at UB and university-affiliated hospitals. He is also a pharmacist who has served as a pharmacy consultant in the area of medication management and efficiency.

Michael Landi, M.D., F.A.C.S.Michael Landi, M.D., F.A.C.S.
Invision Health
Williamsville, NY

Board certified by the American Board of Neurological Surgeons and the American Board of Independent Medical Examiners.

Dr. Landi is board certified by the American Board of Neurological Surgeons and the American Board of Independent Medical Examiners. He is the Chief of Neurological Surgery at Kenmore Mercy Hospital and the Director of the Spine Center. He is a Clinical Assistant Professor of Neurosurgery at the University at Buffalo. Dr. Landi is a fellow of the American College of Surgeons, member of the Congress of Neurological Surgeons, the American Association of Neurological Surgeons, the Medical Society of the State of New York, and the American Medical Association. He is licensed in medicine and surgery in the State of New York and Florida.

Strong clinical and research interests in minimally invasive surgical techniques have resulted in numerous United States Patents and national awards for developing new technology. He is the inventor of the Minrad laser targeting system used in spine surgery internationally. His research has been presented at national and international scientific meetings and published in scientific articles.

Dr. Landi has received many honors including being recognized by Patient’s Choice, a recognition program where patients rate and vote for their favorite doctors. Dr. Landi has been recognized as one of New York’s Favorite Physicians and as one of America’s Most Compassionate Doctors. Also, Dr. Landi was listed in Castle Connolly’s America’s Top Doctors for five years in a row.


Toni VazquezToni Vazquez
Chief Systems Officer (CSO)

Toni Vazquez is the chief systems officer (CSO) of GBUAHN. She is also the co-owner and practice administrator of Urban Family Practice (UFP). UFP is a state-of-the art’ medical facility located on the West Side of Buffalo that serves over 14,000 patients annually.

Vazquez is a philanthropist, and has served on various committees and boards. She co-founded The Raul and Toni Vazquez Foundation. She is an elected member, and current president, of the Williamsville Central School District Board of Education. She is a lifetime member of The National Black MBA Association. Vazquez is a member of the Higher Heights’ Founders’ Circle. The Higher Heights Organization works to build, expand and sustain a national political infrastructure to strengthen black women’s political power and leadership capacity. She also serves on the Buffalo Zoo Board of Directors, Amherst Diversity Commission, Visit Buffalo Niagara Board of Directors, and the Buffalo/Niagara Convention Center Board of Directors.

Vazquez earned her Six Sigma certification from Villanova University. She is a graduate of the Women’s Campaign School at Yale University. She earned a Master’s of Business Administration from Medaille College, and a Bachelor of Arts degree in psychology from the State University of New York at Buffalo.

Ivan AgostoIvan Agosto
Chief Operating Officer (COO)

As chief operating officer, Agosto is responsible for designing and implementing GBUAHN’s business strategies, plans and procedures. He oversees operations and facilitates the establishment of policies that promote the company’s culture and vision. He and his team are responsible for the care coordination and management of our Erie County Medicaid population.

Agosto has an extensive background in service. His bi-lingual and bi-cultural background, and focus on community collaboration, have led him to leadership responsibilities within GBUAHN.

He earned a BA in accounting from the University of Turabo, Gurabo, Puerto Rico (class of 2014, cum laude).

Luis A. SantiagoLuis A. Santiago
Chief Financial Officer (CFO)

Luis “Lou” Santiago has been involved with GBUAHN since its inception in 2012. He currently serves as chief financial officer. Santiago has been charged overall with a multi-faceted involvement in the start-up and maintenance of GBUAHN, including: substantial workforce expansion, and payroll and benefit management. He reviews contracts for every aspect of the corporation, including memorandums of understanding with downstream providers.

Santiago came to GBUAHN with diverse experience in the insurance, health care and not-for-profit sectors. He is a prudent manager, working toward creating efficient operational processes since GBUAHN’S inception. He has led interactive team dialogues on workforce engagement and ethical practices and prepared initial on-boarding and training for new hires in advance of a dedicated training team.

Santiago has a Bachelor of Arts degree from Daemen College and a Master of Business Administration degree from the State University of New York at Buffalo. He has achieved Green Belt Six Sigma, and continues his work toward a Certified Six Sigma Black Belt Designation with vertical in health care.

Nicole PearcyNicole Pearcy
Director of Value Based Payments

As Director of Value Based Payments, Pearcy is responsible for developing and implementing strategies aimed at increasing quality and decreasing costs associated with patient health. She performs data analysis to identify gaps in care, utilization trends, current and past performance, and potential savings opportunities across various healthcare settings.

Pearcy is a Chicagoland native who moved to Buffalo in the spring of 2017. She graduated from Indiana University, where she earned a Bachelor of Science in Psychology and a certificate in Clinical Science.

Jason IsbrandtJason Isbrandt
Director of Strategic Physician Partnerships

As the account executive/provider relations director for GBUAHN, Isbrandt serves as the liaison between GBUAHN and our partnering affiliates. He contributes to the continued growth of our provider base. Isbrandt fosters current provider relationships and is responsible for expanding and improving GBUAHN as a recognizable brand.

Isbrandt has 18 years of outside sales experience in sports team sales, advertising and pharmaceuticals.

Isbrandt earned his Bachelor of Science degree in sports management from Medaille College.

Ava WhiteAva White
Senior Director of Marketing

White began her journey at GBUAHN in October 2013. Her previous experience as a life skills coach equipped her with the skillset necessary to grasp the needs of GBUAHN’s member population.

White previously worked as an administrative assistant in a faith-based organization. This experience gave her valuable insight into the availability of resources for GBUAHN’s most needy population. She also worked with the Women for Human Rights and Dignity organization, which was designed to assist victims of domestic violence, post-incarcerated women, and their children. At GROUP Ministries, White continued her advocacy work with HIV/AIDS patients, child bearing women, and the mental health community.

White received a Bachelor of Arts from Daemen College.