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Please contact the business for updated hours/services due to the COVID-19 advisory.

Accepted Insurance

Northeast Dermatology has not yet specified accepted insurance plans.


Northeast Dermatology has not yet specified any specialties.



Location & Hours

Main Location

155 Borthwick Ave Ste 201w

Portsmouth, NH 03801

Regular Hours
Mon - Fri:
Extra Phones

Phone: (603) 319-6854

Phone: (978) 691-5690

Phone: (603) 436-3872

TollFree: (800) 215-5242


Payment Method
amex, check, discover, master card, visa, cash

Other Information

Other Links

Physicians & Surgeons, Dermatology, Physicians & Surgeons, Physicians & Surgeons, Ophthalmology, Physicians & Surgeons, Surgery-General


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Sally C.



Awful experience! Very unprofessional and creepy "exam" that was performed without any explanation or heads up. Had my bra and underwear pulled out for a quick peek. I was very uncomfortable and felt violated. I will never return!



Provided by Citysearch - 
What a Hot Mess!!

Went in to have a mole removed. Dr. Sherman looked at my entire back but didn't bother with the mole I was concerned about. Two weeks later it fell off but she had nothing to do with it. Several months later I was offered a job there. I was pulling files and was told to look for the files I needed 2-5 files before and after where the file was to be. The files were a HOT MESS. I won't go to a place that can't keep their files straight and doesn't listen to their patients.



Provided by Citysearch - 
Bad vibes, terrible patient relations by nearly all

Brought my child for psoriasis on his scalp and torso. Receptionist was rude and unprofessional. Due to work, I had my mother bring him in for me and I met her there. She had been trying to fill out his patient info sheets. I had faxed these sheets over two weeks previously. I told the receptionist who snapped, ""She didn't tell me that."" Then she had to dig through this huge thick file of faxed papers til she found my son's I'm sorry, but shouldn't this have been put into his file by now?. I don't expect the receptionist to understand about how hard it was to get out of work for this appointment, or how my mother had to give up her own appointment to bring my son and meet me there - I just expect her to be courteous, and to have the faxed paperwork in his file before now (again, I had faxed it over 2 weeks prior!). (-)

The medical assistant called us into the exam room and she was thorough, professional and polite. (+)

When Dr. Chartier came in she was domineering, borderline rude, and very stern toward my child. She never once called him by his name, asked if we had any questions, or even named his problem as ""psoriasis."" She peeked down his shirt, not examining any of his body. (-)

She did examine his scalp. (+)

When I told her he was at a stage of not wanting to take showers every day, she practically reeled on him: ""Do you WANT to get rid of this? Do you WANT to have it forever? Because if you DON'T shower EVERY DAY, you WILL."" ( - )

She explained the treatment course, and how/why it would work, very well. (+)

I asked her about potential diet relations to psoriasis which she informed me were garbage. I explained my son has a few sensory issues, and has a very hard time accepting any other than a few foods, most of which are not very healthy. She then ""reeled"" on me: ""Well DO YOU BUY THEM?"" Then she very sternly told my son, ""You are very heavy. You are heavier than you should be BY FAR. Children who are OBESE and remain OBESE into their teens, will grow up OBESE and remain OBESE for the rest of their lives. Is this what you want? Do you want to be OBESE forever?"" ( -)

My son left with tears in his eyes. I am not saying that anything she said wasn't true, but could she have been any less sensitive? Especially to a pre-pubescent sixth grader with weight and skin issues!?? ( - )

Incredibly she ended the appointment with, ""It was really nice to meet you!"" and absolutely never even noticed my son was red-eyed and trembling with humiliation.

The final insult was when Dr Chartier handed me my son's paperwork for checkout. Posted on it was a heavily scrawled note from the receptionist, ""TOOK A LONG TIME WITH THEIR PAPERWORK!""

The check-out clerk was pleasant enough but extremely harried, rushed, and worried-looking.

All in all a very disappointing experience and I will not be taking my child back to this clinic which was crawling with bad vibes, discontent and rude staff.

Props to the wonderful medical assistant who is obviously too new and too young to have been jaded by this atmosphere yet.



Provided by Citysearch - 
Fantastic Nurse Practitioners

I'm in my late twenties and recently went to the dermatologist for the first time. I didn't have any particular concerns or skin issues, but am a firm believer in preventive medicine and figured I'm at about the right age to start keeping track of my skin more carefully.

During my visit the doctor identified a small mole that she felt needed to be removed and biopsied for precautions. The procedure took less than five minutes and was relatively painless. One week later the NP called with my pathology report and to schedule a follow up appointment. While I will need a simple follow up procedure, I was fortunate to learn there were no major issues.

However, given that this was my first visit to the dermatologist AND that I am learning about this type of health care for the first time, I was looking for a bit more explanation as to a specific diagnosis and what to expect moving forward. When I called back to speak with the Dr. Sherman directly, I was told she didn't have time and did not call patients directly. ...The LAST thing a patient wants to hear. While I appreciate the extremely busy schedule kept by providers, I find it insulting and unacceptable when a doctor can't schedule an hour of their day to return calls to patients. Health care is not meant to be impersonal, and when you stop treating the PERSON, you've missed the point of your profession - not to mention your responsibility to your patients.

The saving grace for Northeast Dermatology was the nurse that I spoke with; Kathleen. In a five to ten minute conversation Kathleen was able to give me every bit of information I was looking for and sooth any concerns that were lingering. She took the extra five minutes to TAKE CARE of her patients and for me, that made all the difference in the world.

Dr. Sherman is lucky to have Kathleen on staff - had I not been able to connect with her today, I most certainly would not have returned to this office, and would have warned friends to be weary and perhaps go elsewhere.



Provided by Citysearch - 
Personable Care

My experience at Northeast Dermatology was a pleasing experience. The waiting area was pleasant as was the staff. This was my first experience at this office and I was highly impressed with the professionalism of the Dr. Margaret Sterwart and the time she spent taking care of my condition. She was very personable which is something I require as a patient of any medical professional. I would recommend this doctor and would return for any medical needs. One thing that has stayed with me about this office - when in the waiting room, and elderly client stopped by just to deliver a handful of flowers from her garden to the staff - this speaks volumes for the respect and care given to clients.



Provided by Citysearch - 
vague & unimformative customer service associates, Dr. Stewart lacks people/social skills

The office staff with whom I spoke briefly with stated they were booking 3 months into the future-and that I could see a dermatologist who would talk to me about my skin issues. I ended up consulting with a specialist, Dr. Margaret Stewart-my time with her totaled 4 minutes. I then had to pay a fee for services totaling $93.00--for the woman's time. Dr Stewart suggested I schedule an appt with their esthetician & she provided me prescription for a topical antibiotic to treat cystic acne. After learning that I could have scheduled an appt initially to see their esthetician & that it wouldn't have taken 3 months of waiting to be seen by the esthetician, I became very upset--and wanted to know why their staff hadn't informed me of this at the time of my phone inquiry. Their staff could only respond that I should have known that by scheduling an appt to be seen by a Doctor, that I should have known the type of exam I was going for. I was, indeed, upset at the fact that I had to pay so much for so little...when I expressed my frustration to the staff, Dr. Stewart asked to speak with me away from the waiting area and proceeded to insult my character--making a comment stating that I 'probably go through life always believing that you are taken advantage of.' This insult/personal attack, coupled with her comment that the $93.00 fee --me disputing the cost, yet understanding the reason for the fee--wouldn't affect her whatsoever, is the reason I am writing --consumers need to be aware of the way both Dr Stewart & her staff deal with matters of conflict...Dr Stewart likes to resolve conflict through personal degredation of your character--BEWARE.