Mark M. Theiss, MD

University	Degree	Focus	Graduated
Georgetown University School of Medicine, Washington Dc	Other Degree		1975

Institution	Focus	Year
Residency - Georgetown University Hospital, Orthopedic Surgery; St Barnabas Medical Center, General Surgery		Not Specified

Certification	Cert. Body	Year
Orthopaedic Surgery	Orthopaedic Surgery	Not Specified

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Review by Anonymous on November 25, 2025 -

Inova Orthopedics - Prosperity - 8501 Arlington Blvd Ste 200

Office & Staff Evaluation

Practice Evaluation

Ease of Getting an Appointment Not rated
Courtesy of Practice Staff Not rated
Appearance & Atmosphere of Office Not rated
Handling of Billing & Insurance Not rated
Average Wait Time Not rated

Provider Evaluation

Willingness to Spend Time with You Not rated
Listening Skills
Clear explanations
Trust in Decision Making Not rated
Accuracy of Diagnosis Not rated
Post-Visit Follow-Up Not rated

Comment - “ Dr. Theiss was exceptionally pro... ”

Dr. Theiss was exceptionally professional and friendly.

Verified Patient

“Dr. Theiss was exceptionally pro...”

Dr. Theiss was exceptionally professional and friendly.

Anonymous 11/25/2025

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Review by Anonymous on August 23, 2025 -

Inova Orthopedics - Prosperity - 8501 Arlington Blvd Ste 200

Office & Staff Evaluation

Practice Evaluation

Ease of Getting an Appointment Not rated
Courtesy of Practice Staff Not rated
Appearance & Atmosphere of Office Not rated
Handling of Billing & Insurance Not rated
Average Wait Time Not rated

Provider Evaluation

Willingness to Spend Time with You Not rated
Listening Skills
Clear explanations
Trust in Decision Making Not rated
Accuracy of Diagnosis Not rated
Post-Visit Follow-Up Not rated

Comment - “ Dr. Theiss was very patient, he ... ”

Dr. Theiss was very patient, he listened to my concerns and answered them to my complete satisfaction.

Verified Patient

“Dr. Theiss was very patient, he ...”

Dr. Theiss was very patient, he listened to my concerns and answered them to my complete satisfaction.

Anonymous 08/23/2025

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Review by Anonymous on July 17, 2025 -

Inova Orthopedics - Prosperity - 8501 Arlington Blvd Ste 200

Office & Staff Evaluation

Practice Evaluation

Ease of Getting an Appointment Not rated
Courtesy of Practice Staff Not rated
Appearance & Atmosphere of Office Not rated
Handling of Billing & Insurance Not rated
Average Wait Time Not rated

Provider Evaluation

Willingness to Spend Time with You Not rated
Listening Skills
Clear explanations
Trust in Decision Making Not rated
Accuracy of Diagnosis Not rated
Post-Visit Follow-Up Not rated

Comment - “ So good... ”

So good

Verified Patient

“So good...”

So good

Anonymous 07/17/2025

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Review by Anonymous on June 26, 2025 -

Inova Orthopedics - Prosperity - 8501 Arlington Blvd Ste 200

Office & Staff Evaluation

Practice Evaluation

Ease of Getting an Appointment Not rated
Courtesy of Practice Staff Not rated
Appearance & Atmosphere of Office Not rated
Handling of Billing & Insurance Not rated
Average Wait Time Not rated

Provider Evaluation

Willingness to Spend Time with You Not rated
Listening Skills
Clear explanations
Trust in Decision Making Not rated
Accuracy of Diagnosis Not rated
Post-Visit Follow-Up Not rated

Comment - “ Exceptional... ”

Exceptional

Verified Patient

“Exceptional...”

Exceptional

Anonymous 06/26/2025

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Review by Anonymous on June 06, 2025 -

Inova Orthopedics - Prosperity - 8501 Arlington Blvd Ste 200

Office & Staff Evaluation

Practice Evaluation

Ease of Getting an Appointment Not rated
Courtesy of Practice Staff Not rated
Appearance & Atmosphere of Office Not rated
Handling of Billing & Insurance Not rated
Average Wait Time Not rated

Provider Evaluation

Willingness to Spend Time with You Not rated
Listening Skills
Clear explanations
Trust in Decision Making Not rated
Accuracy of Diagnosis Not rated
Post-Visit Follow-Up Not rated

Comment - “ I can't say enough good about Dr... ”

I can't say enough good about Dr Theiss! He is simply terrific - kind, caring & of course, an expert with what he does!

Verified Patient

“I can't say enough good about Dr...”

I can't say enough good about Dr Theiss! He is simply terrific - kind, caring & of course, an expert with what he does!

Anonymous 06/06/2025

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Review by Anonymous on September 19, 2025 -

Inova Orthopedics - Prosperity - 8501 Arlington Blvd Ste 200

Office & Staff Evaluation

Practice Evaluation

Ease of Getting an Appointment Not rated
Courtesy of Practice Staff Not rated
Appearance & Atmosphere of Office Not rated
Handling of Billing & Insurance Not rated
Average Wait Time Not rated

Provider Evaluation

Willingness to Spend Time with You Not rated
Listening Skills
Clear explanations
Trust in Decision Making Not rated
Accuracy of Diagnosis Not rated
Post-Visit Follow-Up Not rated

Comment - “ Good... ”

Good

Verified Patient

“Good...”

Good

Anonymous 09/19/2025

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Review by Anonymous on August 09, 2025 -

Inova Orthopedics - Prosperity - 8501 Arlington Blvd Ste 200

Office & Staff Evaluation

Practice Evaluation

Ease of Getting an Appointment Not rated
Courtesy of Practice Staff Not rated
Appearance & Atmosphere of Office Not rated
Handling of Billing & Insurance Not rated
Average Wait Time Not rated

Provider Evaluation

Willingness to Spend Time with You Not rated
Listening Skills
Clear explanations
Trust in Decision Making Not rated
Accuracy of Diagnosis Not rated
Post-Visit Follow-Up Not rated

Comment - “ Good... ”

Good

Verified Patient

“Good...”

Good

Anonymous 08/09/2025

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Review by Anonymous on July 03, 2025 -

Inova Orthopedics - Prosperity - 8501 Arlington Blvd Ste 200

Office & Staff Evaluation

Practice Evaluation

Ease of Getting an Appointment Not rated
Courtesy of Practice Staff Not rated
Appearance & Atmosphere of Office Not rated
Handling of Billing & Insurance Not rated
Average Wait Time Not rated

Provider Evaluation

Willingness to Spend Time with You Not rated
Listening Skills
Clear explanations
Trust in Decision Making Not rated
Accuracy of Diagnosis Not rated
Post-Visit Follow-Up Not rated

Comment - “ Dr. Theiss is amazing, down to e... ”

Dr. Theiss is amazing, down to earth, patient in answering my questions, listening to all my concerns and having answers, truly cares about his patient and appears to love his job!

Verified Patient

“Dr. Theiss is amazing, down to e...”

Dr. Theiss is amazing, down to earth, patient in answering my questions, listening to all my concerns and having answers, truly cares about his patient and appears to love his job!

Anonymous 07/03/2025

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Review by Anonymous on June 12, 2025 -

Inova Orthopedics - Prosperity - 8501 Arlington Blvd Ste 200

Office & Staff Evaluation

Practice Evaluation

Ease of Getting an Appointment Not rated
Courtesy of Practice Staff Not rated
Appearance & Atmosphere of Office Not rated
Handling of Billing & Insurance Not rated
Average Wait Time Not rated

Provider Evaluation

Willingness to Spend Time with You Not rated
Listening Skills
Clear explanations
Trust in Decision Making Not rated
Accuracy of Diagnosis Not rated
Post-Visit Follow-Up Not rated

Comment - “ Love Dr. Theiss's "bedside manne... ”

Love Dr. Theiss's "bedside manner". He's quite engaging; I look forward to appointments with him.

Verified Patient

“Love Dr. Theiss's "bedside manne...”

Love Dr. Theiss's "bedside manner". He's quite engaging; I look forward to appointments with him.

Anonymous 06/12/2025

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Review by Anonymous on May 12, 2025 -

Inova Orthopedics - Prosperity - 8501 Arlington Blvd Ste 200

Office & Staff Evaluation

Practice Evaluation

Ease of Getting an Appointment Not rated
Courtesy of Practice Staff Not rated
Appearance & Atmosphere of Office Not rated
Handling of Billing & Insurance Not rated
Average Wait Time Not rated

Provider Evaluation

Willingness to Spend Time with You Not rated
Listening Skills
Clear explanations
Trust in Decision Making Not rated
Accuracy of Diagnosis Not rated
Post-Visit Follow-Up Not rated

Comment - “ Dr Theiss was very kind and expl... ”

Dr Theiss was very kind and explained everything well. He also Helped schedule my MRI appointment

Verified Patient

“Dr Theiss was very kind and expl...”

Dr Theiss was very kind and explained everything well. He also Helped schedule my MRI appointment

Anonymous 05/12/2025

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Orthopaedic Surgeon - General

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Inova Orthopedics - Prosperity

Practice Colleagues

Greg Gaski, MD - Orthopaedic Surgeon

Robert Hymes, MD - Orthopaedic Surgeon

Alireza Malekzadeh, MD - Orthopaedic Surgeon

Jeff Schulman, MD - Orthopaedic Surgeon

Robert Stinger, MD - Orthopaedic Surgeon

Michael Holzman, MD - Orthopaedic Surgeon

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