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Taking care of you,
not just your symptoms.
We're always accepting new patients!

Southern New Hampshire Internal Medicine

Primary Care and Same Day Care located in Derry, Windham, and Bedford, NH

603-216-0400

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What Makes Internal Medicine Different?

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We Specialize
in Adult Healthcare

Utilizing the best medical science available, we are equipped to handle the broad spectrum of illnesses that affect adults and are recognized as experts in diagnosis, treatment of chronic illness, health promotion, and disease prevention.
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We Provide a Broad Range of Expertise

As general internists, we are not limited to one type of medical problem or organ system. We are specially trained to solve puzzling diagnostic problems and can handle severe chronic illnesses and situations where several different illnesses may strike at the same time.
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We Offer a Top Tier Patient Experience

We provide care for our patients in the context of thoughtful, meaningful doctor-patient relationships. By partnering with our patients in their healthcare, we ensure they receive the highest quality of care tailored to their unique needs. 
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Get to know us.

Internal Medicine | Primary Care Provider


Southern New Hampshire Internal Medicine Associates (SNHIMA) provides routine medical screenings as well as the diagnosis and treatment of chronic illnesses. Our experienced staff includes board-certified physicians, physician specialists, certified physician assistants, and nurse practitioners. Using a comprehensive approach, we work closely with patients to promote a healthy lifestyle and prevent the onset of disease. Our professionals prefer to address the “whole” individual in the scope of patient care, rather than just a particular symptom of illness.

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Awards and Recognition

Our experienced staff includes board-certified physicians, physician specialists, certified physician assistants, and nurse practitioners. 

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patient reviews

"I feel the Doctors don't rush you, listen to what you have to say and include you in any health decisions."
Anne is the greatest PCP I have ever had. She knows me. She advises me. She cares about me and my complete health. My virtual visits are as great as my in-person visits. This woman is simply outstanding and I could not recommend her any more highly. The entire staff at SNHIMA is equally great. These people have made me healthier and happier than I have been in years. 

Annie B.
I had the privilege of being treated by Patrick Carolan, PA-C, and I can confidently say that he is an outstanding healthcare professional. From the moment I walked into his office, I was impressed by his warm, welcoming demeanor and professionalism. Patrick takes the time to listen, thoroughly addresses any concerns, and ensures you understand your treatment plan.

His knowledge and expertise are evident in every aspect of care, and it's clear that he genuinely cares about his patients' well-being. He was thorough during my appointment, answered all my questions, and made sure I felt comfortable throughout the process.

If you're looking for a knowledgeable, compassionate, and highly skilled provider, I highly recommend Patrick Carolan, PA-C. His dedication to patient care truly sets him apart, and I’m grateful to have him as my provider.

Judith D
Dr. Macdonald is an extremely knowledgeable, helpful, and caring physician. He always goes above and beyond to meet the needs of his patients. He literally once saved my life by going the extra mile to explore a symptom that other physicians had ignored.

 This allowed the application of successful measures to deal with a life-threatening disease that I didn’t even know I had. Without Dr. Macdonald’s timely intervention I would not be here to write this review today.

Lesly B
My first visit and it went great. The staff was courteous, prompt and very informative. My annual check-up with Dr. Schultz was professional and he was quite prepared and up to date on all my history. I had a thorough examination and he spent quite a bit of time answering all of my questions. I never felt rushed. I feel very confident in him.

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Our Insurance 

We are the preferred provider for most major insurance plans, often with just a five dollar copay.

Please contact us if you don't see your insurance listed.
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OUR locations

We are a physician-owned, independent Internal Medicine practice with locations in Derry, Windham and Bedford, New Hampshire.

Three locations – One phone number: (603) 216-0400