Independently rated by patient reviews, credentials, and care quality.
Quick answer
Our top ranked dental practice in Portsmouth, New Hampshire is Dr. Amy Rosania, DMD, MScD, rated 4.9 out of 5 across 1,033 public reviews. Other top choices include Dr. Thomas Kelleher, DMD and Dr. Brian Mcguire, DMD. Portsmouth has a population of about 22,733, and the 5 strongest local practices are compared on this page.
Good dental care in Portsmouth should not take hours of searching to track down. We compared local dental practices on review scores, review volume, registry credentials, and the treatments they offer. Our rankings stay independent of whether a practice chooses to advertise with us.
Across the 5 top practices we highlight in Portsmouth, patients can access general dentistry, pediatric dentistry, and periodontics. 1 of these practices on this page offers pediatric dentistry. The Portsmouth practices on this list average 15 years in practice, with Dr. Thomas Kelleher, DMD among the most established at 21 years. Listed offices are concentrated around the 03801 ZIP area. Together these practices hold 2,632 public Google reviews, led by Dr. Amy Rosania, DMD, MScD with 1,033. The average rating across the list is 4.9 out of 5.
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Periodontics
Provides periodontics for Portsmouth families, serving patients for 14 years. Rated 4.9 out of 5 across 1,033 public Google reviews.
General Dentistry
Offering general dentistry in Portsmouth, a well established practice with 21 years of experience. Rated 5.0 out of 5 across 225 public Google reviews.
Pediatric Dentistry · General Dentistry
A Portsmouth dental office focused on pediatric dentistry and general dentistry, serving patients for 8 years. Rated 4.9 out of 5 across 649 public Google reviews.
General Dentistry
General dentistry in Portsmouth, delivered by serving patients for 19 years. Rated 4.9 out of 5 across 319 public Google reviews.
General Dentistry
Known in Portsmouth for general dentistry, serving patients for 11 years. Rated 5.0 out of 5 across 406 public Google reviews.
Practice names, credentials, and specialties are verified against the US National Provider Identifier (NPI) registry, the official record of licensed healthcare providers. Listings were last reviewed on August 28, 2026.
Explore where the top rated dental practices in Portsmouth, New Hampshire are located.
The mouth is often the first place wider health problems show up. In Portsmouth, a general dentist is your first point of contact for cleanings, exams, and everyday treatment. When something more complex comes up, they coordinate specialist treatment so your care stays joined up.
General Dentistry4 of 5 listed practices
General dentists are your first stop for everyday care: checkups, cleanings, fillings, crowns, and preventive advice. Most families see a general dentist twice a year.
Pediatric Dentistry1 of 5 listed practices
Pediatric dentists focus on the dental care of infants, children, and teens, with a gentle approach built around growing smiles.
Periodontics1 of 5 listed practices
Periodontists treat the gums and the structures that support your teeth, managing gum disease and placing implants.
Dental care keeps advancing, from same day crowns to clear aligners and AI assisted diagnostics. See what is new in dentistry and what to ask your Portsmouth dentist.
Our Portsmouth ranking is editorial, not paid. Each practice is scored on patient reviews and review volume, verified credentials from the national provider registry, years in practice, and online presence. Sponsored placements are always labeled and never change how the organic list is ranked.
Read our full ranking methodologyCheck credentials and experience
Confirm the dentist is licensed and look at how long the practice has served Portsmouth. Years in practice and clear credentials such as DDS or DMD are a strong signal of consistent care.
Read recent patient reviews
Reviews reveal what it is really like to be a patient, from wait times to how comfortable procedures feel. Look for a steady pattern of positive feedback rather than a single glowing note.
Match services to your needs
If you want cosmetic work, implants, or braces, choose a Portsmouth practice that offers those services in house so your care stays coordinated under one roof.
Ask about insurance and payment
Call ahead to confirm the office accepts your plan and offers payment options. Many Portsmouth practices work with major insurers and provide financing for larger treatments.
Visit for a first appointment
A cleaning or consultation is the best way to judge cleanliness, technology, and how well the team listens. Trust your comfort level with both the dentist and the staff.
The first appointment at a Portsmouth practice is as much about listening as it is about treatment. You will typically get a cleaning, an exam, and a clear explanation of anything that needs attention. By the end you should understand your options and never feel pushed into treatment.
Dental fees in Portsmouth depend on the procedure and your coverage. Checkups and cleanings are the least expensive and the most important for prevention, so keeping up with them can save you from costlier work later. For treatments like implants or braces, ask about staged treatment, insurance limits, and financing, all of which many local offices help arrange.
Use these questions on your first call to a Portsmouth dental practice to avoid surprises later.
We rank practices using a transparent scoring system that weighs patient reviews, review volume, verified credentials from the national provider registry, years in practice, and online presence. The result is an editorial shortlist of the 5 strongest dental practices in Portsmouth, New Hampshire.
Beyond general dentistry, the top practices in Portsmouth offer pediatric dentistry and periodontics. That means most routine and specialist needs can be met locally without traveling out of the area.
We refresh our data on a regular cycle and show the last updated date at the top of this page. Practice details can change, so we recheck sources and re rank listings to keep Portsmouth current.
Practices can purchase a sponsored position, which is always clearly marked with a Sponsored label. Sponsored placement never changes how we evaluate or rank the organic listings, which stay based purely on our objective criteria.
Look for verified credentials, strong and recent patient reviews, the specific services you need such as implants or orthodontics, accepted insurance, and a first visit that leaves you comfortable with the team. Location and office hours in Portsmouth matter too.
Every listing has a Report an issue link. If a phone number, address, or other detail is out of date, let us know and we will verify and correct it.