Maureen Donnelly Passaro, MD

University	Degree	Focus	Graduated
New York Medical College	Medical Degree		1990

Institution	Focus	Year
Residency - Stamford Hospital, Connecticut		1993
Internship - Stamford Hospital, Connecticut		Not Specified
Fellowship - National Institute of Health		1996
Continuing Medical Education (CME) - Stamford Hospital, Stamford, CT	Internal Medicine	Not Specified

Certification	Cert. Body	Year
Internal medicine	Internal Medicine	Not Specified

Distinction	Institution	Year
	Washington, DC-Baltimore-Northern Virginia Super Doctors	2011

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Review by Anonymous on February 13, 2026 -

MedStar Health Primary Care at Olney 18109 Prince Philip - 18109 Prince Philip Drive Suite B-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 - “ Felt very listened to, there was... ”

Felt very listened to, there was mutual trust

Verified Patient

“Felt very listened to, there was...”

Felt very listened to, there was mutual trust

Anonymous 02/13/2026

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Review by Anonymous on February 03, 2026 -

MedStar Health Primary Care at Olney 18109 Prince Philip - 18109 Prince Philip Drive Suite B-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 - “ Outstanding, caring physician.... ”

Outstanding, caring physician.

Verified Patient

“Outstanding, caring physician....”

Outstanding, caring physician.

Anonymous 02/03/2026

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Review by Anonymous on January 14, 2026 -

MedStar Health Primary Care at Olney 18109 Prince Philip - 18109 Prince Philip Drive Suite B-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 - “ My care has been provided mainly... ”

My care has been provided mainly by Dr Passaro.

Verified Patient

“My care has been provided mainly...”

My care has been provided mainly by Dr Passaro.

Anonymous 01/14/2026

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Review by Anonymous on December 10, 2025 -

MedStar Health Primary Care at Olney 18109 Prince Philip - 18109 Prince Philip Drive Suite B-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 passaro is so wonderful... ”

Dr passaro is so wonderful

Verified Patient

“Dr passaro is so wonderful...”

Dr passaro is so wonderful

Anonymous 12/10/2025

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Review by Anonymous on October 22, 2025 -

MedStar Health Primary Care at Olney 18109 Prince Philip - 18109 Prince Philip Drive Suite B-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 - “ Relaxed and pleasant visit... ”

Relaxed and pleasant visit

Verified Patient

“Relaxed and pleasant visit...”

Relaxed and pleasant visit

Anonymous 10/22/2025

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Review by Anonymous on February 03, 2026 -

MedStar Health Primary Care at Olney 18109 Prince Philip - 18109 Prince Philip Drive Suite B-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 - “ There are not enough adjectives ... ”

There are not enough adjectives to describe Dr Passaro exemplary service. No other doctor comes close.

Verified Patient

“There are not enough adjectives ...”

There are not enough adjectives to describe Dr Passaro exemplary service. No other doctor comes close.

Anonymous 02/03/2026

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Review by Anonymous on January 14, 2026 -

MedStar Health Primary Care at Olney 18109 Prince Philip - 18109 Prince Philip Drive Suite B-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 Passaro is an excellent docto... ”

Dr Passaro is an excellent doctor and I would recommend her to everyone.

Verified Patient

“Dr Passaro is an excellent docto...”

Dr Passaro is an excellent doctor and I would recommend her to everyone.

Anonymous 01/14/2026

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Review by Anonymous on December 12, 2025 -

MedStar Health Primary Care at Olney 18109 Prince Philip - 18109 Prince Philip Drive Suite B-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. Passaro is wonderful, kind a... ”

Dr. Passaro is wonderful, kind and caring

Verified Patient

“Dr. Passaro is wonderful, kind a...”

Dr. Passaro is wonderful, kind and caring

Anonymous 12/12/2025

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Review by Anonymous on November 11, 2025 -

MedStar Health Primary Care at Olney 18109 Prince Philip - 18109 Prince Philip Drive Suite B-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 - “ The doctor spent a lot of time t... ”

The doctor spent a lot of time talking about things that weren't related to my health. I would appreciate more time spent discussing my health.

Verified Patient

“The doctor spent a lot of time t...”

The doctor spent a lot of time talking about things that weren't related to my health. I would appreciate more time spent discussing my health.

Anonymous 11/11/2025

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Review by Anonymous on September 20, 2025 -

MedStar Health Primary Care at Olney 18109 Prince Philip - 18109 Prince Philip Drive Suite B-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 Not rated
Clear explanations
Trust in Decision Making Not rated
Accuracy of Diagnosis Not rated
Post-Visit Follow-Up Not rated

Comment - “ Knows my health history and expl... ”

Knows my health history and explains why or why not changes should/could be made!

Verified Patient

“Knows my health history and expl...”

Knows my health history and explains why or why not changes should/could be made!

Anonymous 09/20/2025

Office Hours

Internal Medicine Physician - Endocrinology, Diabetes & Metabolism

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MedStar Health Primary Care at Olney 18109 Prince Philip

Practice Colleagues

Frederick Finelli, MD - Surgeon

Eileen Wiesenberger, DO - Internal Medicine Physician

Melanie Grady, MD - Family Medicine Physician

Maryam Movassaghian, MD - Internal Medicine Physician

Mohammad Ali, MD - Internal Medicine Physician

Ryann Brickley, CRNP - Nurse Practitioner

April Tweedt, DO - Family Medicine Physician

Aashish Dewan, MD - Family Medicine Physician

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Accepted Insurance