Board Certified Physicians


Carlos A. Santos, M.D.

A native of Puerto Rico, Dr. Santos came to Buffalo and completed residency and training in Obstetrics and Gynecology at the State University of New York in Buffalo in 1987. He is Board Certified in this specialty.
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Carmen M. Todoro, M.D.

A native of Western New York is a graduate of the State University of New York School of Medicine. In private practice since 1990, he is a partner in OB/GYN Associates of Western New York with office in Lancaster and Orchard Park.
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Brian Smith, M.D.

Dr. Smith has been a part of OB/GYN Associates of WNY since 1993. A lifelong resident, he attended Maryvale High School where he ran track and cross-country, played in the Wind Ensemble and marching band. He attended St.
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Catherine Falkner, M.D.

Dr Falkner is Buffalo born and raised, one of 11 children she grew up in West Seneca. She attended Canisius College and graduated Magna Cum Laude. Medical School was completed through SUNY at Buffalo. Her training in OB /GYN was completed at SUNY Syracuse where she was an OB/GYN Resident...
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Sheila Pieczonka, DO, FACOG

Dr Pieczonka is a native of Buffalo New York. She is a graduate of New York College of Osteopathic Medicine where she trained in a holistic approach to medicine. She then completed a Traditional Internship at Sisters of Charity Hospital, and in 2002 she completed her residency in OB/GYN through...
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Jennifer Rojek, M.D.

Dr. Rojek, a native of West Seneca graduated from West Seneca East High School where she was involved in soccer, cross country and track. She then attended SUNY Geneseo College, majored in biology, was president of the biology club and volunteered at the local fire department as an emergency medical technician.
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Jeffrey C. Constantine, MD, FACOG, FACS

Dr. Constantine completed his formal residency training at the State University of New York at Buffalo/Sisters of Charity Hospital, and is board certified in obstetrics & gynecology as well as surgery. Dr. Constantine practices general obstetrics & gynecology, including robotic assisted laparoscopic surgery.
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Sara H. Koritz, MD, FACOG

Dr. Koritz was raised in Pittsburgh and the NYC area. She attended The Mount Sinai School of Medicine in Manhattan and completed her OB/GYN residency at Case Western Reserve University in Cleveland. After several years on the faculty at the Albert Einstein College of Medicine in the Bronx she spent...
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Afshan Samad, M.D.

Dr. Samad is characterized by her strong interpersonal skills, compassion and a positive work ethic. She is a native of India, and recieved her medical degree abroad. She completed residency training in Obstetrics and Gynecology at Sister's of Charity Hospital, Buffalo, New York .
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Nurse Practitioners & Physician Assistants


Paula Drilling-Hunt, C.N.P., M.S.N., and R.N.

Paula has been practicing as a Nurse Practitioner in Women's Health for over twenty years. She received her Master of Science in Nursing/Nurse Practitioner degree from the State University of New York at Buffalo in 1989.
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Nancy Osgood, PA

Nancy has been working with OB/GYN Associates of WNY since 1999 as Dr. Smithís Physician Assistant. She graduated from the State University at Geneseo with a BS in Biology. Later, she continued her education graduating cum laude from DíYouville College in physician assisting.
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Jennifer Smith

Jennifer Smith, P.A.

Jennifer has worked as a physician assistant with OB/GYN Associates since March of 2001 after earning her P.A. degree from Daemen College. She decided to pursue a degree in medicine after obtaining a Bachelor's degree in elementary Education from St.
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Diane Stonemetz, DNP, WHNP-BC, ANP, RNFA, NCMP

Diane joined OB/GYN Associates in 1995 after moving back to Buffalo from Syracuse. She completed her Adult Nurse Practitioner certificate through Community General Hospital in Syracuse. She earned her Master of Science in Nursing/Women's Health NP degree and certificate in Complimentary and Integrative Therapies from Drexel University.
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Megan E. Burke, FNP

Megan received her undergraduate degree from D'Youville College, where she graduated cum laude with a BS in Nursing. She worked in pediatrics at Women and Children's Hospital of Buffalo, as well as here at OB/GYN Associates as a nurse manager.
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Kris Ziegler

Kris Ziegler, NCC

Kris Ziegler has been a womens health nurse practitioner since 1992 and joined Ob/gyn associates in 1995. She is NCC certified in infertility/reproductive endocrinology and is a member in good standing of the American Society of Reproductive Medicine.
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Certified Nurse Midwives

kim mecca

Kim Mecca, CNM

Kim Mecca is a Certified Nurse Midwife who is a lifelong resident of Clarence, NY. She graduated from Niagara University with her degree as a registered nurse in 1990. She then attended the University of Rochester and graduated from the midwifery program in 1996.
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Kelly VIMG 9739

Kelly Lee Vargo, CNM

Kelly Vargo is a Certified Nurse Midwife who has worked at OB/GYN Associate of WNY for 21 years. Her career in Women's Health Care began as an RN at Children's Hospital of Buffalo in 1982. She is also experienced in neonatal ICU. Kelly attended SUNY Brooklyn Midwifery Program in 1990.
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Our team is composed of highly trained and experienced practitioners. 

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