Dental One Associates of Westminster
412 Malcolm Drive, Suite 100, Westminster, MD 21157

John E Longley, DDS  General Dentist

dr.longley

Education:

Dr. Longley attended Towson University, Towson, MD, and received his Bachelor of Science degree in 1999. He continued his education at the University Of Maryland Baltimore College Of Dental Surgery, Baltimore, MD, earning his Doctor of Dental Surgery in 2003.

Dental Area of Focus:

General dentistry, Invisalign certified and trained in Sleep Apnea treatment with removable devices

Affiliated/Dental-related Associations and Organizations:

Member of the U.S. Army Reserves

Volunteer & Community Involvement:

Actively involved in Cub Scouts with his sons

Interests/Hobbies:

In his spare time, Dr. Longley enjoys tennis, fitness and home improvements.
Dr. Longley genuinely cares about his patients and their dental needs. He strives to make every dental visit a positive, pleasant experience.

“I’m a dentist that loves being a dentist, and that’s a pretty cool thing”

Read What Our Patients Say
Patient Reviews
very informative, the surgeon described the process I am going to have…………..very friendly
Randy L.
I have had nothing but a positive experience with all of the front office staff, dental assistants, and doctors. The other plus is that most of our family’s dental needs can be taken care of at the […]
Mary Z.
Donna and Dr. K are true professionals and always make my dental experience a positive one !
Karen L.
Everyone there from the Doctor to the Staff are very friendly, The place is very neat, The receptionists let you know up front what the costs are so no hidden fees. All around a very great place to […]
Christopher M.
Very friendly staff.
Kristine W.
Everyone is so friendly!
Luann A.
We absolutely love Dental One of Westminster. Dr Sagafi is so awesome and explains everything and is always willing to answer our questions. Our favorite dental assistant Tess puts my daughters mind […]
Trisha J.
Hygienist Jenny, who I did not know, was excellent. Not only was her “chairside manner” outstanding, but she was very professional and knowledgeable. She is the first D.H. who suggested I use a […]
James H.
Alicia the Hygienist and the dentist were rockstars! Awesome!
Investigator M.
I’ve been a patient here for about 18 months now. I have had cavities filled, wisdom teeth removed, and sudden tooth pain examined. I used to be terrified to visit the dentist. After 8 years I […]
Amanda H.
Excellent care by Donna
Sharon K.
Excellent treatment for a broken filling
Richard B.
I get good dental care
Belinda F.
Friendly staff great Hygenists caring Dentists
J C.
Everyone is friendly and treats patients with utmost care and concern.
James J.
Very friendly always. Explain and answer any questions asked.
Steven F.
Everyone was very nice. Was taken on time for both appointments I had.
Diana N.
No matter who you see on your visit, you get someone who seems to care.
Doris A.
Friendly caring staff. Dr Whang made me feel at ease throughout the process of my root canal. Didn’t get her assistants name but she was also top notch.
Mark B.
Gentle, quick and very friendly.
Jill B.
Office Hours
Mon. – 8:30 AM - 5:30 PM
Tue. – 8:30 AM - 5:30 PM
Wed. – 8:30 AM - 5:30 PM
Thu. – 8:30 AM - 5:30 PM
Fri. – 8:30 AM - 5:00 PM
Sat. – Closed
Sun. – Closed
Phone: (410) 970-0292
Fax: (410) 876-5322
Healthcare Financing with
CareCredit
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We accept most insurance plans and will be happy to help you understand the coverage that you have. We will do our best to see that you receive your maximum insurance benefits for all covered services.

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For appointments, call us at: (410) 970-0292 or
Request Appointment
For appointments, call: (410) 970-0292
Office Hours
  • Monday 8:30 AM - 5:30 PM
  • Tuesday 8:30 AM - 5:30 PM
  • Wednesday 8:30 AM - 5:30 PM
  • Thursday 8:30 AM - 5:30 PM
  • Friday 8:30 AM - 5:00 PM
  • Saturday Closed
  • Sunday Closed
Get in touch:
  • Phone: (410) 970-0292
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