Our Team

  • Smiling woman with a stethoscope outdoors in front of bushes and flowers.

    Christine Chaput, MD

    With over 12 years of pediatric experience and twin toddlers of her own, Dr. Chaput brings a calm, capable energy to every visit. She’s a marathon-running foodie who believes deeply in teamwork, trust, and the magic of The Secret Garden.

  • A smiling person with a stethoscope, wearing a green floral dress, stands outdoors near pink flowers and greenery.

    Arielle Marlette, CPNP-PC, PMHS

    With a warm heart and a clinical mind, Arielle Marlette brings over a decade of pediatric expertise—and a love of blueberry ice cream—to our team. She’s passionate about supporting kids in her own community and would absolutely use mind-reading for good, not evil.

  • A woman with long dark hair and a white blouse smiling in an office setting with books and framed certificates in the background.

    Deanna Tocco, MD

    A lover of children’s books, jelly beans, and heartfelt connections, Dr. Tocco brings a fresh burst of warmth and experience to Unionville Pediatrics. She’s back in her hometown and ready to make every patient visit something worth talking about.

  • Woman in teal blouse smiling outside with greenery and pink flowers

    Alyssa Buono, MD

    A pediatrician with sharp clinical skills and serious escape room credentials, Dr. Buono brings heart, humor, and puzzle-master energy to Unionville Pediatrics. She loves patient-centered care, Barnyard Dance, and weekend outings with her toddler and golden retriever sidekick.

  • Smiling man with glasses and gray hair, wearing a white shirt, in front of a bookshelf with books and an American flag.

    Peter Jannuzzi, MD

    Our senior partner who has cared for generations of families, Dr. Jannuzzi brings a calm, steady presence—and a secret love for karaoke—to everything he does. He’s a fan of Italy, Goodnight Moon, and never says no to a slice of key lime pie.

  • Smiling person wearing glasses, a brown sweater, and a stethoscope, standing indoors with a painting on the wall behind them.

    Mark Gilroy, MD

    Warm and comforting with a laugh that puts everyone at ease, Dr. Gilroy is a fan favorite for his calm demeanor, Adele ballads, and stories that sound like they’re from another dimension. Whether he’s tending to patients or trees on his Christmas tree farm, he brings heart and humor to everything he does.

  • A woman smiling outdoors wearing a dark scrub top, with her hands clasped. She is standing in front of a bush and flowers with trees in the background.

    Mary Zunino, RN

    Gentle, grounded, and always ready with a knee on the floor and a kind word, Nurse Mary makes even the trickiest vaccine visits feel calm and cozy. She’s a fan of Maine beaches and has a soft spot for preemies thanks to her own tiny miracle.