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
Always having a great experience here.
Demetria H.
I was taken back to the office shortly after my arrival and the treatment received was courteous, friendly and professional.
Kim B.
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.
Friendly, great work and ensured my comfort the entire visit.
Donieshia T.
Great peoples
Eva W.
everyone was exceptionally nice. everyone explained everything. the doctor was awesome
Debbie R.
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.
Always a great experience.
Demetria H.
Dr. Lasher was great !
Catherine R.
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. Berry does a great job. Highly recommend him to be your new dentist! His assistant that day was very friendly as well. Great job guys!
Trayce G.
Dr. Lasher is the reason I have been a patient for many years. He is an exceptional dentist.
Helen G.
Staff attentiveness
Theresa D.
There was no wait time. My hygienist, Donna was awesome.
Wanda Q.
Front Desk-Great-Very Professional-Great Customer Service Donna- Friendly-Funny-My Teeth Sparkle-Great At What She Does
Michele H.
Dr. Berry is great and all of the office staff
Danny J.
I enjoy seeing the same hygienist, and everyone is friendly.
Christine H.
Love my hygienist Donna!!!!
Antoinette F.
I have recommended you to several friends
Paul H.
Thirty years of excellent care!
Carol D.
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

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 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
Our Location