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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Dorie Eger, DDS, MS

Orthodontist

Dr. Dorie Eger is an Orthodontist offering braces to our patients. She is uniquely trained as a specialist in both Periodontics and Orthodontics. She earned her Doctor of Dental Surgery degree from the University of Maryland Baltimore College of Dental Surgery in 1995, graduating first in her class. Continuing her studies at the Baltimore College of Dental Surgery, she completed […]

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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
I’ve been getting my dental care there for a long time.
Mark H.
Donna is excellent, upbeat, friendly and informative!
Naomi C.
This is the best office I have ever been to. Been going to Dr. LAsher for 25 yrs.
Melanie S.
Donna is one of the best hygienist around and always takes the time she needs to make sure everything is wonderful with my teeth! Doctor Harriman is wonderful and always goes out of her way for me […]
Karen P.
Great Service.
Paul J.
Dr. Lasher was great !
Catherine R.
Prompt
Tara W.
Dr. Lasher and his team quickly evaluated my painful problem and now I am on the mend. Nice, professional and clean. This was my very first visit and I am extremely satisfied with the results. Thank […]
Lois
Awesome dentist and staff. Very friendly and professional
Mark C.
Robin, the dental hygienist, is excellent. She is always on time, friendly, able to answer questions, and efficient. In other words, she is a professional!
Joan W.
Very courteous staff. Always feel welcomed.
Kenny W.
Always professional, friendly and knowledgeable. Never had to wait for long periods of time.
Michele H.
Friendly people there.Seem like family.Take you on time.
Cam C.
Like Doc Lasher and staff.
Campbell I.
We enjoyed the new Dr. Berry on staff.. I was very appreciative that he was and is able to take care of my sons’ dental needs.
Denise S.
Great dental care and customer service.
Dianna A.
Staff attentiveness
Theresa D.
Dr. Lasher is an awesome dentist. I have recommended several friends and family members. His dental assistants are so friendly. You feel at ease when you have a to come there.
Lori H.
effective care, skilled staffL polite and professional!
Tim M.
All around good experience
William E.
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!
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

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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