Dr. Nathaniel Horn is a native Chicagoan who attended Bradley University and received dual degrees in psychology and sociology. He completed a master’s degree in Biology from the University of Chicago, and later, a degree in medicine from the Southern Illinois University School of Medicine.

Dr. Horn spent his residency in the internal medicine program at Illinois Masonic Medical Center and upon completion, was then accepted into the University of Chicago’s resident program in Anesthesiology and Critical Care Medicine. He spent three years as an attending physician at the University of Chicago and then accepted the position of Chairman of the Department of Anesthesiology at Jackson Park Hospital in Chicago, IL.

Among his other accomplishments, Dr. Horn is the founder of an anesthesia group that provides services to the tri-state area of Wisconsin, Illinois and Indiana. Dr. Horn joined the office of the Chicago Boston Medical Group in 2001 and currently serves as the primary physician for the Chicago office.

Dr. William Livingston joined the Costa Mesa Boston Medical Group in 2006 as the primary physician of the Costa Mesa, CA office. After obtaining his undergraduate degree from Delta State University, he attended the University of Mississippi, and received his medical degree from the University of Pennsylvania. A member of the United States Navy and Medical Corp., Dr. Livingston completed his residency in Urology at the US Naval Hospital in Philadelphia. He worked for numerous naval hospitals including the U.S. Naval Hospital in Yokosuna, Japan, where he served as a Chief of Urology. After leaving the Navy he served as an Assistant Professor of Urology at the University of Tennessee School Of Medicine. He later established a successful, private practice in Arcadia, CA.

Outside of the office Dr. Livingston’s interests include investment research, continuing medical education online, chess, bridge, fishing and flying his own plane, mainly to great fishing spots.

Dr. Allen Plotkin graduated from the University of Wisconsin where he earned both his bachelors and medical degrees. He began his professional career as an intern at Mt. Sinai Hospital in Milwaukee and later completed his urology residency at the University of Iowa. Now a board certified urologist, he is also greatly involved in numerous medical charities and community organizations and also volunteered his medical services to the victims of Hurricane Katrina in 2005.

When asked why he became a physician, Dr. Plotkin’s answers simply, “I like people.” It’s easy to see not only his comfortable interaction with patients, but also his genuine dedication to their health and overall wellbeing.

Dr. Plotkin joined the Dallas Boston Medical Group in 2008 as the head physician of the Dallas location. He says he enjoys the daily interactions with his patients, hearing about their life experiences, and most important, being able to make a positive contribution in their health and personal relationships.

Dr. Janowski attended The Robert Wood Johnson Medical School in New Jersey, graduating in 1999. He completed his residency in Internal Medicine at The Mount Sinai Hospital in New York City in 2002. For two years he was an attending physician at The Mount Sinai Hospital of Queens, while practicing internal medicine in the community of Astoria, New York. He completed board certification in 2003.

In 2004, Dr. Janowski founded Broomfield Medical Associates, in Broomfield, Colorado.  In 2010, he founded The Center For Medical Weight Loss in Broomfield, CO.  
Dr. Janowski is also a Clinical Instructor at the University of Colorado Health Sciences Center. He has special interests in pain management, men’s health, medical aesthetics, and medical weight loss.

Dr. Ali Meslemani currently serves as the primary physician for Boston Medical Group’s Detroit office. A graduate of Western Michigan University, he received his medical degree from Ross University School of Medicine and completed his post-doctoral training at MSU/KCMS and Henry Ford Hospital. Dr. Meslemani has received numerous awards including the KCMS Robert H. Hume award for excellence in surgical research in 2002

Dr. Edward J. Ferdon has worked as the primary physician at Boston Medical Group’s Fort Lauderdale, FL office since early 2002. A native of South Carolina, he earned a B.A. from Furman University and went on to receive a law degree from Loyola Law School and a medical degree from the Medical University of South Carolina. Dr. Ferdon completed his residency in internal medicine at Huntington Memorial Hospital in Pasadena, CA and Los Angeles County Medical Center, schools affiliated with the University of Southern California School of Medicine. He is licensed to practice medicine in Florida, Georgia, and California and is also a member of the California State Bar.

While at the Ft. Lauderdale Boston Medical Group, Dr. Ferdon has helped thousands of patients of all ages and medical conditions regain their sexual health, and he looks forward to treating future patients and enhancing their general physical health, emotional well being, and quality of life.

Outside the office Dr. Ferdon enjoys exercise, reading, politics, studying foreign languages, and international travel, especially in Latin America.

Dr. Daniel Tuft was born in Atlantic City, N.Y. and attended Trinity College in Connecticut.  He receiving his medical degree from the University of Colorado, and later, and M.B.A from Sonoma State University. Dr. Tuft completed his medical residency in Internal Medicine at St. Mary’s Hospital in San Francisco. He joined the University of Washington’s School of Medicine in Seattle, WA, and practiced in the field of Allergy and Immunology.  Aside from being an accomplished physician, Dr. Tuft was also active in the military, having served two years in the Air Force and eighteen years in the U.S. Army Reserves. He retired in 1999 at the rank of Colonel. Having joined Boston Medical Group in 2003, Dr. Tuft enjoys the daily interaction with his patients, and especially enjoys hearing the positive results they see from the treatment programs he oversees.

When away from the Houston Boston Medical Group office, Dr. Tuft enjoys cooking and remodeling his home, and he considers his youngest daughter as a great inspiration because of her dedication to the community service.

Dr. Barry Buffman is a Board Certified urologist who joined the Los Angeles Boston Medical Group in 2002 as the physician of the Los Angeles office. He graduated from Arizona State University with a B.S. in Psychology, and later completed his medical degree at Rush Medical College in Chicago. During his early academic career, Dr. Buffman studied the early markers of prostate cancer and compared their effectiveness as early screening tools.

After completing his surgical residency at St. Vincent’s Hospital in New York, he went on to complete a residency in urology at Columbia Presbyterian Hospital. In the course of his career, Dr. Buffman has enjoyed over 20 years of private surgical practice in sub-specialties in sexual dysfunction, oncology, laser and trauma.

Dr. Buffman’s medical experience, along with his genuine compassion for his patients, has enabled him to help thousands of men restore their sex lives and improve their relationships and overall wellbeing.

Outside of the office Dr. Buffman is a father of four children and spends the majority of his time with his family who he refers to as his “inspiration”. He also enjoys music composition and screen writing.

Dr. Jeffrey Schwartz joined the Orlando Boston Medical Group in 2006 and currently serves as the Medical Director at both the Orlando and Tampa offices. After receiving his undergraduate degree in Biology from Colby College in Waterville, Maine, Dr. Schwartz attended New York Medical College and received his medical degree in 1981. Dr. Schwartz then completed a residency in Obstetrics and Gynecology at Brookdale Hospital Medical Center in Brooklyn, NY.

Dr. Schwartz enjoyed a 20 year career as a practicing Obstetrician/Gynecologist in private practice as well as a Senior Physician in Florida’s Public Health system working at the Palm Beach County, Sumter County, and Polk County Health Departments. Dr. Schwartz’s medical career has also involved work in Physical and Rehabilitative Medicine, extensive training and work in Cosmetic Medicine, Laser Surgery, and Phlebology, the surgical treatment of vein disease.

Dr. Schwartz is a member of both the Sexual Medicine Society of North America (SMS) and the Consortium for Improvement in Erectile Function (CIEF). These organizations are committed to furthering education and research in the areas of sexual disorders, erectile dysfunction and premature ejaculation. Dr. Schwartz is a member of the American College of Phlebology and was a recipient of the Physician’s Recognition Award for Continuing Medical Education by the American Medical Association.

Dr. Gregory McGinley currently serves as the head physician at Boston Medical Group’s Philadelphia, PA office.  A native Philadelphian, he completed his undergraduate studies at Villanova University and his medical degree at the Philadelphia College of Osteopathic Medicine.  He completed residency programs in family medicine, internal medicine, and cardiology, and is board certified in all three specialties. Dr. McGinley has held a number of positions throughout his medical tenure including Director of Emergency Medicine at St. Luke’s Allentown Hospital, Clinical Instructor at PCOM, and Assistant Professor at Nova-Southwestern University of Osteopathic Medicine.  He was also awarded a Fellowship in the National Association of Physician Specialists in Cardiovascular Medicine.

When outside the Philadelphia Boston Medical Group office Dr. McGinley enjoys spending time with his family, including his six children and four grandchildren.

Dr. Rose is a graduate of the Kansas City University of Medicine and Biosciences. He has over 25 years experience in Primary Care and Pain Management in Michigan and Arizona.

Dr. Rose is Board Certified in Family Practice. He is an advocate of preventive healthcare and believes that men’s health is becoming a large issue along with the aging of our population.

Outside the office Dr. Rose enjoys playing tennis, softball and spending time with his family. He is glad to be helping the men of Arizona.

Dr. Lawrence J. Zelonis serves as the primary physician at Boston Medical Group’s Pittsburgh office.  After receiving a pharmacy degree from Duquesne University, he studied osteopathic medicine at the Philadelphia College of Osteopathic Medicine.  He is certified by the American College of Osteopathic Physicians, and has practiced medicine throughout his career at St. Clair Medical Suites, Kane Hospital and Divine Providence Hospital.  He has also served important roles in numerous research and clinical studies relating to blood pressure, sinusitis, diabetes, and allergies.

For Dr. Zelonis, working at Boston Medical Group is a satisfying experience which allows him to improve not only men’s sexual health, but their overall health as well.  He refers to the positive feedback given by his patients as “truly rewarding”.

A father of three children, Dr. Zelonis has been an active member of the Elks National Foundation for the past 14 years. He is also an active member of the American Osteopathic Association and the Pennsylvania Osteopathic Medical Association.

Dr. Patrick Brennan has been a physician at Boston Medical Group’s San Diego office for over 10 years. A native of San Francisco, CA, he obtained a B.A. in Psychology from Stanford University, and later, his M.D. from Baylor College of Medicine in Houston, Texas.  He chose to specialize in family medicine.

After relocating to San Diego, CA in 1998 Dr. Brennan joined the San Diego Boston Medical Group.  He enjoys the daily interaction with his patients, and his tenure with the company has afforded him numerous opportunities to do so.  He is dedicated to an open and casual relationship he has with his patients which, he says, allows him to more effectively monitor their progress and ensure that they get optimal treatment results.

Aside from his medical career, Dr. Brennan enjoys an active, outdoor lifestyle including cycling, skiing, scuba diving, and counts the Caribbean as one of his favorite travel destinations.

Dr. Phil Nguyen is a graduate of Indiana University School of Medicine who joined the San Francisco Boston Medical Group in 2007. During his career Dr. Nguyen has achieved numerous professional milestones and achievements, including establishing a very successful medical practice specifically within Asian and Hispanic communities. He is also very knowledgeable and experienced in using anti-aging agents, aesthetic lasers and dermal fillers. Dr. Nguyen also served as a family practice resident for the Swedish Family Medicine and as Coordinator and Master of Ceremonies for IUSOM Fine Arts Festival, a non profit organization. Currently Dr. Nguyen serves as the primary physician for both the San Francisco and Denver offices of Boston Medical Group.

Outside the office Dr. Nguyen’s other interests include snowboarding, running, weight lifting, tennis, oil painting, cooking, gardening, dancing and music. Dr. Nguyen is also fluent in Vietnamese and proficient in Spanish.

Dr. John J. Fina, is a board certified Internist with over thirty years of medical experience. In conjunction with his Master’s Degree in Biochemical Pharmacology, he was employed under a New York State Research Grant as a Research Scientist, conducting independent cancer research with experimental lymphosarcomas. He received his M.D. from the State University of New York at Buffalo and completed an Internal Medicine residency at Buffalo University Affiliated and Millard Fillmore Hospitals. He has also participated in several Medicine Preceptorship Programs at Virginia Mason Medical Center in Seattle.

His career in medicine has encompassed all aspects of Primary Care. His past positions include, but are not limited to, County Public Health Officer in Garfield County, Montana, Medical Director of the Garfield County Health Center, and Chairman in the Department of Medicine at the Billings Office and Deaconess Medical Center.  He counts diabetes, hypertension, addictive diseases, and male sexual dysfunction as his special interests, and he has given many lectures about these issues to medical students, therapists, and other physicians.

Since he began working for Boston Medical Group’s Seattle, WA office in 2003, Dr. Fina has dedicated his career to helping patients with their sexual health needs.  He views male sexual dysfunction as a challenging and important issue, and encourages his patients to speak freely about their conditions, and also to include their partner in the discussions when possible.  Dr. Fina is proud to be able to share his wealth of medical experience with his patients, and considers dealing with each and every one a privilege.

Dr Rajesh Puri graduated with honors from University College of Medical Sciences in New Delhi, India in 1982. Aside from earning a degree in medicine, Dr .Puri also received a diploma in Public Health and Hygiene from the same institution. His post graduate pursuit includes a 3 year pediatric residency at Howard University Hospital in Washington D.C., where he was honored with the best intern award, the best overall resident award and also the Marie and Oscar Randolph award.


Dr Puri has been in private practice since 1987, working in general medicine for the first 10 years. Thereafter, he served as the Medical Director for the Virginia offices of the American Vein Institute of Phlebology associates from 1998 to 2003, a specialty practice focusing in the diagnosis and management of venous disorders and varicose veins. His experience and interest in venous diseases and circulatory conditions led him to study sexual dysfunction. He accepted a position with the Boston Medical Group in 2003 and he is currently the primary physician at the Tyson’s Corner, Virginia office.


Dr Puri is a member of the American Medical Association, the American College of Phlebology and the American Association of Physicians of India. He is an active humanitarian, a philanthropist and a volunteer with several charitable organizations.

As a board certified OB/GYN, Dr. John Hayes is always pleasantly surprised by his patients’ overwhelmingly positive reaction to his background. Prior to joining the Washington D.C. Boston Medical Group as the primary physician of its Washington D.C. location, Dr. Hayes ran a successful, private practice for over 30 years. He earned his medical degree from the University of Pennsylvania School of Medicine and later completed his residency at the University of Pennsylvania Hospital.

During his tenure as Chief Resident at the University of Pennsylvania Hospital, he was awarded the prestigious John P. Emich Award for Bedside Manner.

It is the personal belief of Dr. Hayes that most physicians enter the medical field because they like helping people, and he himself is no different.  He enjoys working with patients and relishes the opportunity to help them restore their self-image, and improve their relationships and overall well being.