Our Locations

At St. Joseph Hospital Family Medicine & Specialty Services in Merrimack, New Hampshire, our team of board-certified physicians and providers understand the need for personalized, patient-centered care to help you and your loved ones lead healthy and fulfilling lives. We offer a range of services including preventative care, wellness exams, disease management, and chronic care management. With convenient appointment times, we are currently welcoming new patients.

“Dr. Kernan has been my PCP for many years. She is one of the most caring, compassionate doctors I have experienced. She never rushes through our appointment and really listens to me. I trust her completely.” – Wendi

“She is wonderful. I am complicated, and for 20 years, she has listened and done all she can. She is personal, caring, and professional. She has gone above and beyond for me and my family.” – Lindsey

“So caring, understanding, and patient. Cathy is passionate about her patients and works hard to keep them well (mentally, physically, and socially). My family and I are blessed by her care and are so thankful we found St. Joseph Hospital Family Medicine & Specialty Services in Merrimack.” – Lynn

“Knowledgeable, personable, vested, and caring. She truly cares and understands her patients on an individual level. In addition, fantastic staff.” – Gregg

“Dr. Kernan is a thoughtful, kind, and thorough physician and she has done a wonderful job taking care of me for the last 15 or 20 years.” – Cathy

“Cathy O’Donnell is fantastic, both my daughter and I see her. She is very thoughtful. Takes time to listen to what you are saying and makes you feel like you are being heard. She is knowledgeable and incredibly passionate about her care.” – Eric

“I have had her since I was a child. Now my baby boy is seeing her. She is simply amazing and I love her dearly. She has gone above and beyond for my family and myself. We love Cathy!” – Aubrey

“It was a great visit. She was attentive to my concerns and spent time to explain everything to me. She was awesome. I highly recommend her!” – Gene

“So caring, understanding, and patient. Cathy is passionate about her patients and works hard to keep them well (mentally, physically, and socially). My family and I are blessed by her care and are so thankful we found St. Joseph Hospital Family Medicine & Specialty Services in Merrimack.” – Lynn

“Very happy with my care over the past few years with Cathy O’Donnell and her nurse Kelly. They always go above and beyond! (The entire staff) is always so kind and welcoming, the rooms/offices are always clean and they always get back to you quickly! I would recommend this office to anyone asking/looking.” – Christina

“Couldn’t imagine a better doctors office. Every person here is friendly and willing to help. My doctor took the time to get to know me and her advice over the years has changed my life. 10/10 recommend.”

“Love St. Joe’s in Merrimack. Awesome staff, get there on time, they take you on time.” – Ronald