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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Roza Rostami, DMD

General Dentist

Dr. Roza Rostami has been practicing dentistry for 18 years. Before earning her degree in the United States, she earned her Doctor of Dental Surgery degree from Tehran University of Medical Sciences, School of Dentistry. After moving to the United States, Dr. Rostami graduated with High Honors from Boston University Henry M. Goldman School of Dental Medicine, Boston, Massachusetts, where […]

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Read What Our Patients Say
Patient Reviews
The overall dental office atmosphere was outstanding. The dental hygienist was very knowledgeable and excellent job on all levels from each staff and Dr. Harriman.
Faith S.
Donna Ash is wonderful, very professional!
Alicia M.
effective care, skilled staffL polite and professional!
Tim M.
Great people providing outstanding service.
Louis R.
This is the best office I have ever been to. Been going to Dr. LAsher for 25 yrs.
Melanie S.
I’ve been going there many years and am pleased with my visit and service.
Mark H.
My entire family has visited your office over the years. Without question or concern, the entire staff has always treated us with dignity, respect, and seen to our individual treatments in a timely […]
Michael R.
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.
Dr. Harriman is the consummate professional:concerned about her patient, thorough and explains what is going on.
John K.
Very professional cleaning, quick and efficient!
Virginia E.
Excellent care, friendly staff consistently over the many years I’ve been coming there. I have recommended more than a few and they feel the same.
Linda B.
I LOVE Dr. Lasher. I live in Old Town Alexandria and drive to Waldorf because I get the BEST care from him and his staff.
Donna H.
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 was pleased to have Dr. Lasher since Dr. Cho is no longer with the practice. My hygeneist was fantastic!!!!
Polly C.
This is the only dental office that has ever made feel comfortable.
Patricia R.
I have recommended you to several friends
Paul H.
I love robin and Dr. Mike. They have taken care of me for years. They both are very professional and truly caring individuals. If there are any problems, they explain it to you so that you can […]
Susan B.
Friendly, great work and ensured my comfort the entire visit.
Donieshia T.
Always a great experience.
Demetria H.
Have had wonderful care with Dr Lasher over a span of 20+ yrs
Pamela T.
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
Sun. – Closed

1 Saturday per 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 an 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
  • Sunday Closed
Get in touch:
  • Phone: (301) 861-0665
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