Drs. Lasher and Harriman at Dental One Associates of Waldorf
3500 Old Washington Road, Suite 301, Waldorf, MD 20602

Welcome to Drs. Lasher and Harriman at Dental One Associates of Waldorf

At Drs. Lasher and Harriman at Dental One Associates of Waldorf we offer quality, convenient dental care for the whole family. Located at 3500 Old Washington Road, Suite 301, Waldorf, MD, 20602, we provide many dental services including dental hygiene, crowns, dentures, and various cosmetic procedures among many other services. We accept most insurance plans and offer payment options to fit any budget.

Learn more about us!
Request an Appointment

Proper dental care is important at all ages. Good dental health requires that you take care of your teeth daily and have regular dental check ups. It is recommended that you receive regular professional dental check-up and cleaning.

Request an Appointment!
Your Smile
  • Cosmetic dentistry
  • Teeth whitening

Replace missing teeth.

Restore your


Office Hours
Mon. – 9:00 AM - 5:00 PM
Tue. – 9:00 AM - 6:00 PM
Wed. – 8:00 AM - 6:00 PM
Thu. – 8:00 AM - 5:00 PM
Fri. – 8:00 AM - 2:00 PM
Sat. – 8:30 AM - 2:00 PM

2 Saturdays a month

Phone: (301) 861-0665
Fax: (301) 843-4070
Dental Emergency?
For medical emergencies, please call 911
Teeth Whitening

Regain your confidence and look your best with any one of a variety of teeth whitening options.

20% Off
Braces Only
$50 OFF
Treatment of
$250 or more.*
Free Consult
and $100 Off
Cosmetic Treatment

Welcome to Drs. Lasher and Harriman at Dental One Associates of Waldorf, Your Experienced Family Dentists

For 40 years, our practice has provided high-quality dental care to families in the community. Our experienced Waldorf dentists treat adults and children, beginning at the age of two. This allows us to become your family dental center and establish lasting relationships that lead to a lifetime of dental health. Our convenient local dentist office is located at 3500 Old Washington Road, Suite 301, Waldorf, MD 20602 in the Cambridge Professional Center. From the I-95 Beltway, take Branch Avenue, exit 7A, toward Waldorf. Head south for approximately 20 miles, then turn left onto Leonardtown Road South. Turn right at the first stoplight, onto Old Washington Road South. Travel approximately half a mile, and you’ll find our office on the left. If you prefer, public transportation is nearby. For your family’s convenience, we’re open on Mondays from 9:00 a.m. to 5:00 p.m., on Tuesdays from 9:00 a.m. to 6:00 p.m., on Wednesdays from 8:00 a.m. to 6:00 p.m., on Thursdays from 8:00 a.m. to 5:00 p.m., on Fridays from 8:00 a.m. to 2:00 p.m., and on Saturdays from 8:30 a.m. to 2:00 p.m. We offer these hours to help you schedule dental care around your work, school, and personal obligations.

We extend our commitment to helping our patients by supporting the entire Waldorf community. We’re proud to be in involved in Mission of Mercy and the Make-A-Wish Foundation. We strive to give back to the wonderful community that has given years of support to Drs. Lasher and Harriman at Dental One Associates of Waldorf.

Call us today at (301) 861-0665 or request an appointment online.

The Affordable Family Dental Care You Can Trust

Our Waldorf dentists and staff enjoy helping adults and children make the most of their smiles. Along with our highly skilled general dentists, we have an in-house periodontist and orthodontist who can provide the specialized treatments that your family needs, as well as sedation dentistry for patients with dental anxiety.

Our general dentistry services include dental check-ups, professional cleanings, dental sealants, fillings, extractions, root canals, crowns, bridges, dentures, and dental implants. We offer many cosmetic dentistry procedures such as bonding, cosmetic fillings porcelain veneers, and both in-office and at-home teeth whitening including Smile Perfected™ 20-Minute Whitening. Our resident periodontist treats all cases of gum disease, while our on-site orthodontist offers an array of straightening and alignment options, including Invisalign® invisible braces. For patients who have anxiety about having dental procedures or who fear going to the dentist, we offer sedation dentistry for complete relaxation during treatment. We also strive to make children feel comfortable by rewarding them with goodie bags, balloons, and stickers at the end of their appointments. We simply do everything we can to make each of our patients smile.

We Ease the Cost of Dental Care

Your family’s oral health is priceless, so our dentists in Waldorf make dental care affordable and accessible to all. We have special financing options to help you budget payments, and accept many dental insurance plans and the DentRite® discount dental plan. In addition, special cost savings are available year-round on popular dental services. We’re happy to provide more information on any of our convenient payment methods.

Call us at (301) 861-0665 today to schedule your appointment or request an appointment online.

Our Services

We are proud to offer a variety of dental services to meet the needs of all ages and dental conditions.

  • General Dentistry

    Great oral health can benefit your entire body.

  • Cosmetic Dentistry

    If you’re dissatisfied with your teeth because they are yellow, crooked, gapped, or chipped, cosmetic dentistry may be just what you need.

  • Orthodontics

    Orthodontics involves the use of devices – most commonly braces – to move teeth or adjust underlying bone.

  • Periodontics

    Periodontics is the prevention, diagnosis and treatment of diseases affecting the gums.

  • Sedation Dentistry

    Sedation is a necessary step in a variety of dental procedures, ranging from tooth extraction to advanced root canals, but some patients may require sedation dentistry to make it through a standard dental appointment.

Meet Our Dental Staff

Meet the Team

Besi Tong, DMD, MSD


Dr. Tong grew up in the Northern Virginia area and completed his […]

Karen Harriman, DDS

General Dentist

Dr. Harriman has been practicing dentistry in Waldorf, Maryland for over 15 […]

Michael Lasher, DDS

General Dentist

Dr. Lasher received a Bachelor of Science degree from the University of […]

Thomas Lin, DMD, MSc


Dr. Lin received his Doctor of Dental Medicine at Boston University Goldman […]

Amal Al-Fares, DDS

General Dentist
Donna is excellent, upbeat, friendly and informative!
Naomi C.
Have had wonderful care with Dr Lasher over a span of 20+ yrs
Pamela T.
Like Doc Lasher and staff.
Campbell I.
Quality care and friendly people.
Louis R.
reliable, available, expert, caring, gentle
Kyle O.
DONNA is the greatest !!!!! She always greets me with a smile, talks me through the entire procedure and as a patient for 35 years there, I have never felt any pain during any of my office visits. Dr. Mike is a great guy too
Eric D.
Dr. Harriman and Donna my hygienist are great. They have cared for my teeth for over 14 years and I highly recommend them. They are professional, kind and thorough.
Dennis W.
This is the best office I have ever been to. Been going to Dr. LAsher for 25 yrs.
Melanie S.
I wasn’t scheduled for an appointment but was overdue. I was there with my mother who had an appt. so she checked to see if any were available and there was. I was seen right away and received everything I needed to get me up to date on my checkups!
Dillon C.
My hygienist, Cory is second to none!! She is extremely thorough, knowledgeable, and gentle. Our family loves her!!
Reynal A.
Great technician and excellent front desk associates.
Stephanie S.
Because of the professional and courteous service I receive from all the staff member at Dental One Associates.
Kurt D.
everyone was exceptionally nice. everyone explained everything. the doctor was awesome
Debbie R.
All around good experience
William E.
The staff are very friendly and you don’t wait long for your appointment.
Beverly J.
I’ve been going to this dental office for over 30 years and I wouldn’t go anywhere else
Wanda D.
I like the staff and professional services they provide.
Katherine H.
Friendliness and time spent for appt.
Joyce B.
Great Service.
Paul J.
I’ve been going here for about 13 years! Everyone is professional, friendly and knowledgeable. Very happy!!!
Connie W.
We Accept Most Insurance Plans!
Learn More

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.

No Insurance? No Worries! See our discounts and offers here

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For appointments, call us at: (301) 861-0665 or
Request Appointment
For appointments, call: (301) 861-0665
Office Hours
  • Monday 9:00 AM - 5:00 PM
  • Tuesday 9:00 AM - 6:00 PM
  • Wednesday 8:00 AM - 6:00 PM
  • Thursday 8:00 AM - 5:00 PM
  • Friday 8:00 AM - 2:00 PM
  • Saturday 8:30 AM - 2:00 PM
Get in touch:
  • Phone: (301) 861-0665
Our Location