Dr. David Rosania, MD, MS?
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Dr. David Rosania, MD, MS, Periodontist

Dr. David Rosania, MD, MS

Periodontist | Periodontics

185 Cottage St Ste 2 Portsmouth NH, 03801-4164


I am a Board certified Periodontist and was the first surgeon in our region to place a modern-era dental implant over 25 years ago, and I have placed several thousand since then. I have also performed well over 20,000 periodontal surgical procedures. I am excited to combine my experience with the state-of-the-art training my daughter Amy has received at the University of Pennsylvania and the University of Connecticut, two of the most highly ranked dental programs in the nation. I am committed to treating my patients with dignity and with providing a personalized experience as free of stress as possible. There is a good chance that you know one of my patients, and if you ask around I am confident that they will confirm this.

I received my education at Tufts University (B.S. cum laude in Biology and Psychology) and the University of Connecticut (D.M.D. and Specialty Certificate in Periodontics), most recently earning a M.S. in 2008 (again at Tufts University). I am a past President of the Rockingham County Dental Society. I founded a 20-year-long dental study club and authored The Perio Perspective, a newsletter for local dentists and hygienists. For the past seven years I have indulged my love for teaching at The Governors Academy, where I taught Biology, Physics, Chemistry, Anatomy and Physiology, and Environmental Science, while continuing to practice Periodontics and Implant Therapy. I continue to cherish my three grown children and my wife Pam. My hobbies include triathlon, electric guitar, studying science, psychology and philosophy, and trying to keep up with Amy running and skiing.

Education and Training

Tufts University BS 1975

University of Connecticut DMD 1979

University of Connecticut Periodontology Certificate 1981

Board Certification

American Board of Periodontology

Provider Details

Dr. David Rosania, MD, MS
Dr. David Rosania, MD, MS's Expert Contributions

Areas of expertise and specialization

Dental ImplantsGingival (gum) GraftingBone GraftingPeriodontal SurgeryPeriodontal Scaling


  • Best of Portsmouth - Periodont Portsmouth Business Awards 
  • Top Dentists in New Hampshire New Hampshire Magazine 

Professional Memberships

  • American Dental Association  
  • American Academy of Periodontology  
  • International Team for Implantology  
  • American Board of Periodontology  
  • New Hampshire Dental Society  
  • Seacoast Esthetic Dentistry Association  

Charities and Philanthropic Endeavors

  • Remote Area Medical

Professional Society Memberships

  • International Team for Implantology, American Board of Periodontology, American Academy of Periodontology, Seacoast Esthetic Dentistry Association, New Hampshire Dental Society, American Dental Association

Dr. David Rosania, MD, MS's Practice location

185 Cottage St Ste 2 -
Portsmouth, NH 03801-4164
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New patients: 603-294-0110

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Media Releases

Get to know Periodontist Dr. David Rosania, who serves patients in Portsmouth, New Hampshire. 

Dr. Rosania, a board-certified periodontist, was the first surgeon in the Portsmouth region to place a modern-era dental implant over 30 years ago. Since then, he has placed several thousand dental implants, and has performed well over 20,000 periodontal surgical procedures. 

At present, he tends to patients’ dental needs at Seacoast Periodontics & Dental Implants in Portsmouth, New Hampshire. He works alongside his daughter, Dr. Amy Rosania.

With their combination of 40 years’ experience and training in the newest techniques, the father-daughter duo specialize in treating gum disease with conventional and laser periodontal therapy, as well as dental implant placement, gum grafting, and crown lengthening. With a primary goal is to save teeth whenever possible, they intend to meet patients’ needs and expectations and avoid surprises. 

Dr. Rosania earned his Bachelor of Science (BS) degree in Biology and Psychology from Tufts University. He then went on to obtain his Doctor of Medicine in Dentistry (DMD) degree and a speciality certificate in periodontics from the University of Connecticut. In 2008, he earned his Master of Science (MS) degree, again at Tufts University. 

A past President of the Rockingham County Dental Society, Dr. Rosania is a member of the American Dental Association, the American Academy of Periodontology, and the International Association of Periodontal Plastic Surgeons. He is also board-certified through the American Board of Periodontology, an organization which serves the public and the dental profession by administering the board certification process for experts in the dental specialty of periodontics.

Dr. Rosania is committed to treating his patients with dignity and with providing a personalized experience with minimum stress. He founded a 30-year-long dental study club and authors The Perio Perspective, a newsletter for local dentists and hygienists. From 2009 – 2014, he indulged his love for teaching at The Governor’s Academy, where he taught biology, physics, chemistry, anatomy and physiology, and environmental science, while continuing to practice periodontics and implant therapy. 

Periodontology is the specialty of dentistry that studies supporting structures of teeth, as well as diseases and conditions that affect them. A periodontist specializes in the prevention, diagnosis, and treatment of periodontal disease, and in the placement of dental implants. Periodontists are familiar with the latest techniques for diagnosing and treating periodontal disease and are trained in cosmetic periodontal procedures and grafting procedures to rebuild lost bone and gum tissue.

Happily married, Dr. Rosania and his wife, Pam, have three grown children and two granddaughters. His hobbies include running triathlons, playing the electric guitar, studying science, psychology, and philosophy, as well as trying to keep up with his daughter Amy in running and skiing. 

Drs. Amy and David Rosania were both included on the National Consumer Advisory Board’s list of America’s Best Dentists for 2017-2019. They were also voted onto New Hampshire Magazine’s list of New Hampshire’s Best Dentists by their dental colleagues from 2017 to 2019.

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185 Cottage St, Portsmouth, NH 03801, USA
Head north on US-1 BYP N
0.2 mi
At the traffic circle, take the 3rd exit onto the I-95/Maine/Massachusetts ramp
0.3 mi
Keep right at the fork, follow signs for I-95 N and merge onto I-95 NEntering Maine
8.4 mi
Take exit 7 toward ME-91/U.S. 1/The Yorks/Ogunquit
0.4 mi
Slight right onto Spur Rd (signs for York/US-1/ME-91)
0.3 mi
Turn right at the 1st cross street onto US-1 S
0.3 mi
Turn left onto York St
0.9 mi
Turn right onto Hospital Dr
56 ft
15 Hospital Dr, York, ME 03909, USA



185 Cottage St, Portsmouth, NH 03801, USA
Head north on US-1 BYP N
0.2 mi
At the traffic circle, take the 3rd exit onto the I-95/Maine/Massachusetts ramp
0.3 mi
Keep left at the fork, follow signs for I-95 S/Hampton NH/Massachusetts and merge onto I-95 SToll road
8.1 mi
Take exit 2 for State Route 101 WToll road
0.9 mi
Merge onto NH-101 W
1.0 mi
Take exit 12 for NH-111 toward Exeter/North Hampton
0.2 mi
Turn left onto NH-111 W/Exeter Rd (signs for Hampton Falls)Continue to follow NH-111 W
2.5 mi
Turn right onto Buzell Ave
266 ft
Turn left at the 1st cross street onto Auburn St
413 ft
Turn right onto Magnolia Ln
0.1 mi
Turn right at Highland St
262 ft
Turn right
135 ft
5 Alumni Dr, Exeter, NH 03833, USA



185 Cottage St, Portsmouth, NH 03801, USA
Head north on US-1 BYP N
0.2 mi
At the traffic circle, take the 4th exit onto US-1 BYP S
0.5 mi
Turn right onto Borthwick Ave
0.6 mi
Turn right
148 ft
Turn left
256 ft
Turn rightDestination will be on the right
292 ft
333 Borthwick Ave, Portsmouth, NH 03801, USA