New Hampshire’s Top Doctors

For the 2022 Top Doctors poll, New Hampshire Magazine selected national research firm Castle Connolly to conduct the survey process. Included are 543 doctors in 57 specialties, as nominated by their peers, who cover a wide range of medical needs from pediatrics to surgical care. We also asked several of this year’s Top Doctors to share a quotation or anecdote that helps motivate or inspire them to continue practicing medicine at the highest level.

Read about the Castle Connolly selection process

Top Docs Logo

Meet some of the 2022 Top Doctors

Polyxenirounds Square

Photo by Kendal J. Bush

Polyxeni S. Rounds, M.D., F.A.C.O.G.

At this point in her career, Polyxeni Rounds of Bedford Commons OB-GYN is ushering in the next generation, the children of the children she delivered decades ago. Her own start in life, she says, was “quite unique, with a father who was born and raised in Exeter, and my mother from a remote village in northwestern Greece.” The focus in her family was always on education and excellence, and she was encouraged to, she says, “achieve as much as possible.”

She ultimately chose to pursue medicine, deciding on obstetrics and gynecology because of “the wonderful combination of primary care with long-term relationships, the ability to do surgery, and delivering babies as families were started — or, as my son once said, ‘helping babies have mommies.’”

Though her family supported her ambition to become a physician, the doors to education were only just opening. “I was fortunate that Phillips Exeter had become coed the year before I entered, and that Bowdoin College was also newly coed when I went,” she says. “Medical school at Rutgers in Newark did not have many women in the class,” she says, though she found it welcoming.

After a residency in Rochester, New York,she returned to New Hampshire, joining Dr. Ken Herr, and soon other Rochester physicians followed. Together they built a “strong and nurturing practice with the philosophy of patients first; then quality of life for staff and physicians,” she says.

Where do you find joy in your career? The true joy of medical practice is in caring for people as you provide personal medical care for them. It is a great privilege and responsibility to be involved in people’s lives at some of the most pivotal and private times. Having known women for many years through many phases of their lives is a humbling experience, and it’s truly rewarding.

How has your specialty/field changed over the years? Are these changes for the better? Is there anything you feel needs to continue to change?  Obstetrics and Gynecology is an ever-changing field. Obstetrics is more complicated than delivering babies. The advent of advanced ultrasound, lifesaving intensive care nurseries, genetic testing and information, and internet “information” have changed the practice of medicine. However, the basics still apply — individual care, some common sense and confidence in our health. We often forget that we have been having babies for millennia.

Gynecology is separate from obstetrics, and deals with the majority of women’s lives.  Changes in surgical approaches with minimally invasive surgeries, robotics and medical options that are changing have all advanced our care.
We are also seeing many more women in the field, but I think that men offer a different, valuable perspective on care and I would like to see men continue to be in the field of Ob/Gyn.

What are some of the challenges you’ve faced? The challenges I have faced are not different from the challenges others face — completing a demanding education and residency, working as a group to give excellent care in a patient-focused environment, and also maintaining my individuality so I can give personal care to every patient. The biggest challenge was balancing family and work.  Obstetrics had frequent 24-hour-call days, at times every three days. That can be very taxing. When asked how I did it, my response is that my husband is my partner and equal in the family. I always wondered why he was never asked how he did it.

What is your greatest accomplishment? Having balanced and achieved a wonderful career and a wonderful family.

Md Chatoorgoon Kaveer 220Kaveer K. Chatoorgoon M.D., F.A.C.S.
Dartmouth-Hitchcock Medical Center
Pediatric Surgery

“I value the relationships I build both with the children that I see as well as their parents. Together we work through identifying what the issues are and how we can solve them. These relationships drive me to find the best solutions for my patients. There is a purity in helping children. Their agenda is very simple — to get better so they can get back to playing. It’s a stark difference when you see a patient after they’ve improved from an illness or surgery. They are completely different once they are well. There’s nothing more gratifying than watching a patient, who was once very ill, interact, play, draw or jump around. I find it heartwarming. I’m proud to be a part of the process that helped them to recover.”

Ryan JessicaJessica L. Ryan M.D., F.A.C.S.
Catholic Medical Center

“Receiving a breast cancer diagnosis can be frightening and often life-changing. I strive to alleviate my patients’ fears by empowering them with confidence and knowledge, and by offering them the most advanced surgical techniques and oncology treatments available today. Seeing a patient successfully complete their therapy and be amazed by their own strength and resilience continues to inspire me. As a fellowship-trained breast surgeon, my role is to bring the most cutting-edge options to my patients here in New Hampshire. At the same time, I want all women to have these opportunities, and so I continue to serve on an international committee, traveling near and far to teach other surgeons how to safely and effectively offer these techniques to their patients.”

ZipinDaniel S. Zipin, D.O.
Exeter Hospital
Physical Medicine and Rehabilitation

“As an interventional physiatrist at Core Physicians and Exeter Hospital, I am honored to serve the
Seacoast community. My practice and days are diverse, treating patients in the clinic, completing diagnostic EMGs and performing spinal interventions. My goal is always to serve my patients at the highest level — sometimes that means spending time to educate them on the timeline and course of healing, helping them understand their current or future limitations or motivating them to try a new therapy, exercise or plan. Over the last 12 years, I have strived to team up with my patients and colleagues. This type of practice affords me the gift of long-term relationships. It’s always a comfort to see a familiar face, and I hope to offer my patients some reassurance and ease during times that can otherwise be very challenging.”

IrokannekaNneka Iroka, M.D.
Elliot Hospital
Diabetes and Metabolism

“As a young girl, I watched a close family member suffer from complications of diabetes. I watched him go through the pain associated with his condition and so badly wanted to help him. That feeling stuck with me, and now, as an endocrinologist, I get to help people lead their best life possible. I approach this responsibility with a work ethic shaped by my father, who used to say, “If you have to do it, give it your all.” That’s what I strive to give my patients each day, and I can’t imagine a more rewarding career and calling.”

Danbouvier Md RtDaniel P. Bouvier, M.D.
Orthopaedic Surgery
New Hampshire Orthopedic Center

“What inspired me to go into medicine 21 years ago and what inspires me now has certainly evolved over time. I am passionate about the care of the young athlete, which includes not just diagnosing their physical problem, but understanding the emotional and social impacts that it has on their life and adolescent development. Specifically, much of my current interest lies in the prevention, treatment, and recovery of the high school age female ACL injured patient, as this is certainly one of the MOST challenging patient groups we treat as Orthopaedic Sports Medicine physicians.”

Usher GaryGary D. Usher, M.D.
Wentworth-Douglass Hospital

“It is a constant source of surprise to me that I continue to enjoy practicing community-based neurology as much as I did when I first started practice in Dover years ago. The practice of medicine has gotten in many ways more cumbersome. What has not changed is the pleasure I get from the people I work with, and my enjoyment of developing relationships with the people whom I and our team provide care for.“

Veronica Triaca Md2020Veronica Triaca, M.D.
Concord Hospital
Urogynecology/Female Pelvic Medicine and Reconstructive Surgery

“As a physician who primarily cares for women, I have the honor and privilege of managing conditions that greatly impact their quality of life. To do so, I have had the great fortune of working with a group of health care providers who share the same compassion, drive and sensitivity to our patients’ needs. The first of its kind, the Pelvic Medicine Program at the Urologic Institute of Concord Hospital is comprised of a unique group of physicians, advanced providers, physical therapists, nurses and medical assistants who strive to provide excellent care. We are all on the same page when it comes to what the patient needs. As a urogynecologic surgeon, I am constantly reminded of how the relationship that I have with my patients impacts their outcomes and success. Together with my team, we strive to be patient centered whilst nurturing patient relationships and delivering care in an integrated and coordinated manner.”


Castle Connolly Top Doctors is a healthcare research company and the official source for Top Doctors for the past 25 years. Castle Connolly’s established nomination survey, research, screening and selection process, under the direction of an M.D., involves many hundreds of thousands of physicians, as well as academic medical centers, specialty hospitals and regional and community hospitals all across the nation.

The online nominations process — located at — is open to all licensed physicians in America who are able to nominate physicians in any medical specialty and in any part of the country, as well as indicate whether the nominated physicians is, in their opinion, among the best in their region in their medical specialty or among the best in the nation in their medical specialty. Once nominated, Castle Connolly’s physician-led team of researchers follows a rigorous screening process to select top doctors on both the national and regional levels.

Careful screening of doctors’ educational and professional experience is essential before final selection is made among those physicians most highly regarded by their peers. The result — we identify the top doctors in America and provide you, the consumer, with detailed information about their education, training and special expertise in our paperback guides, national and regional magazine “Top Doctors” features and online directories.

Doctors do not and cannot pay to be selected and profiled as Castle Connolly Top Doctors.

Physicians selected for inclusion in this magazine’s “Top Doctors” feature also appear online at, or in conjunction with other Castle Connolly Top Doctors databases online on other sites and/or in print.

Castle Connolly was acquired by Everyday Health Group (EHG), one of the world’s most prominent digital healthcare companies, in late 2018. EHG, a recognized leader in patient and provider education, attracts an engaged audience of over 53 million health consumers and over 780,000 US practicing physicians and clinicians to its premier health and wellness websites. EHG combines social listening data and analytics expertise to deliver highly personalized healthcare consumer content and effective patient engagement solutions. EHG’s vision is to drive better clinical and health outcomes through decision-making informed by highly relevant data and analytics. Healthcare professionals and consumers are empowered with trusted content and services through the Everyday Health Group’s flagship brands including Everyday Health®, What to Expect®, MedPage Today®, Health eCareers®, PRIME® Education and our exclusive partnership with® and The Mayo Clinic Diet.® Everyday Health Group is a division of J2 Global Inc. (NASDAQ: JCOM), and is headquartered in New York City.

Top Doctors Event Photos

Top Doctor Event sponsors

Our annual Top Doctors awards reception is held each April and is invite-only.

Sulloway Hollis Logo

Knob Creek

New Hampshire Business News