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

Accepted Insurance

Keith DMD Hallaian MD has not yet specified accepted insurance plans.


Additional Specialties: Dental Oral & Maxillofacial Surgery


By Appointment Only

Location & Hours

Main Location

80 Maple Ave Ste 203

Smithtown, NY 11787

Regular Hours
Mon - Fri:
Extra Phones

Fax: (631) 265-6723



Payment Method
all major credit cards, insurance

Other Information

Physicians & Surgeons, Oral & Maxillofacial Surgery, Physicians & Surgeons, Family Medicine & General Practice, Physicians & Surgeons, Public Health
Other Information

Insurance: Delta Dental PPO, DeltaCare USA, Delta Dental Premier


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Lothar M.



As others have written here, the office is nothing short of a Zoo. They did not file medicaid papers correctly and instead of refiling correctly they decided to put a senior on a fixed income in for collection. They know I can't pay but they have decided to hurt me anyway. The dentist who referred me to them has used this same medicaid card before my visit the the Zoo and after my visit to the Zoo. With so many good dentists around why use Hallaian.

Andrew K.



My Primary Care Dentist referred to this so called professional to have a full mouth extraction. I obtained the referral, made the appointment, confirmed the appointment yesterday morning that I was in fact having a full mouth extraction. I arrived this morning, completed the paperwork, had an x-ray, and met with the dentist. He stated that my teeth were all healthy and he wouldn't extract any of them. I have three teeth that were set up for crowns, in which two have filed down and one in cracking in half. Three others have root canals, of which the filling has fallen out on two. I am missing half my teeth from previous extractions. I also have TMH, which causes my teeth to grind. In addition, I have high anxiety and grind my teeth. But these are all healthy teeth! The fact is that my insurance would cover this procedure, however the referring dentist wants to do multiple bridges, which are not covered. Since the two dentists work together, Dr. Hallaian will not do the full mouth extraction because it would stop the referring dentist from doing the bridges and making more money, of which I can only assume Dr. Hallaian gets a kick back from.



Dr. Hallaian and his staff mad...

Dr. Hallaian and his staff made my appointment very satisfying. The dental assistants were amazing and very kind and courteous. I would highly recommend Dr. Hallaian for anyone getting their teeth extracted and want a kind and professional Doctor and awesome staff behind him. A+