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

Our Team

Waldorf Dentists

Besi Tong, DMD, MSD

Orthodontist

Dr. Tong grew up in the Northern Virginia area and completed his undergraduate studies at the University of Virginia where he earned his Bachelor’s degree in Biology. He then moved to Philadelphia, PA to attend Temple University Maurice H. Kornberg School of Dentistry where we was inducted into the Omicron Kappa Upsilon National Dental Society and graduated summa cum laude […]

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Karen Harriman, DDS

General Dentist

Dr. Harriman has been practicing dentistry in Waldorf, Maryland for over 15 years. A native of Ontario, Canada, she received an Honors Bachelors of Science degree from the University of Guelph. She then went on to earn a Doctor of Dental Surgery from New York University in 1994, graduating with honors. Prior to joining Dr. Lasher, Dr. Harriman spent a […]

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Michael Lasher, DDS

General Dentist

Dr. Lasher received a Bachelor of Science degree from the University of Maryland at College Park in Biochemistry. He then went on to earn a Doctor of Dental Surgery degree from the University Of Maryland Baltimore College Of Dental Surgery in 1979. Dr. Lasher received honors in Prosthodontics and a fellowship in Geriatric Care at the Waxner Center in Baltimore […]

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Thomas Lin, DMD, MSc

Periodontist

Dr. Lin received his Doctor of Dental Medicine at Boston University Goldman School of Dental Medicine, Boston, MA, in 2006. He attended the University of Pennsylvania School of Dental Medicine, Philadelphia, PA, earning a Certificate of Advanced Graduate Study in Periodontology in 2009. He earned his Master of Science Degree in Oral Biology at the University of Pennsylvania School of […]

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Amal Al-Fares, DDS

General Dentist
Read What Our Patients Say
Patient Reviews
Like Doc Lasher and staff.
Campbell I.
Got right in with a dental emergency! Fast temp fix to last until I can have a crown installed.
Raymond C.
Caring environment with quality care
Jerry S.
I’ve been going to this dental office for over 30 years and I wouldn’t go anywhere else
Wanda D.
Dr. Lasher is the best dentist! The dental assistant and front desk person were great as well!
Lauren M.
The office staff members were very pleasant, and sensitive to my needs. Everyone was so professional and friendly. I appreciate how my appointment was set according to my schedule. Dr. Berry was very […]
Leslie S.
All around good experience
William E.
This is the only dental office that has ever made feel comfortable.
Patricia R.
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 […]
Dillon C.
I have been a client/ patient here for nearly 20 years. Very friendly dentist and staff!
Robert T.
Great staff! Had the best and most thorough cleaning I’ve ever had.
Andrea W.
This is the best office I have ever been to. Been going to Dr. LAsher for 25 yrs.
Melanie S.
Always professional, friendly and knowledgeable. Never had to wait for long periods of time.
Michele H.
Dr. Lasher was great !
Catherine R.
Dr. Lasher is the reason I have been a patient for many years. He is an exceptional dentist.
Helen G.
Accommodating office staff and good care in the chair!
Tammy C.
I’ve had excellent treatment for over 30 years with this group.
Sharon S.
Great and pleasant experience! First time going with my 12 year old. Friendly staff. I will make this our permanent dentist office!
SheCooking
We love our hygienist, Donna. She runs on time or early for appointments. She’s friendly and interested in our family.
Elizabet B.
Very good experience overall.
Bryn J.
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
Healthcare Financing with
CareCredit
We Accept Most Insurance Plans!
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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.

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

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
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