Marcus Mckenzie, MD

University	Degree	Focus	Graduated
University of Texas Medical Branch at Galveston	Doctorate	Other	1998
Sinai Hospital of Baltimore GME	Doctorate	Other	2002
George Washington University School Of Medicine	Doctorate	Other	2005

Institution	Focus	Year
Residency - Johns Hopkins University	Internal Medicine	2002
Residency - Sinai Hospital of Baltimore GME	Johns Hopkins School of Medicine/Internal Medicine	2002
Fellowship - Georgetown University Hospital	Cardiovascular Disease	2005
Fellowship - George Washington University School Of Medicine	Cardiovascular Disease	2005

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Review by Anonymous on March 12, 2026 -

Baylor Scott & White Legacy Heart Center - Plano Preston Road - 6601 Preston Rd

Office & Staff Evaluation

Practice Evaluation

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

Provider Evaluation

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

Comment - “ Dr. Mac is a very related provid... ”

Dr. Mac is a very related provider. He speaks to you like you're a real person and doesn't make you feel belittled or less of a person. I have a lot of respect for this type of provider that sees you as a person more than a patient.

Verified Patient

“Dr. Mac is a very related provid...”

Anonymous 03/12/2026

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Review by Anonymous on March 03, 2026 -

Baylor Scott & White Legacy Heart Center - Plano Preston Road - 6601 Preston Rd

Office & Staff Evaluation

Practice Evaluation

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

Provider Evaluation

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

Comment - “ I'm extremely comfortable talkin... ”

I'm extremely comfortable talkin and working with him.

Verified Patient

“I'm extremely comfortable talkin...”

I'm extremely comfortable talkin and working with him.

Anonymous 03/03/2026

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Review by Anonymous on February 10, 2026 -

Baylor Scott & White Legacy Heart Center - Plano Preston Road - 6601 Preston Rd

Office & Staff Evaluation

Practice Evaluation

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

Provider Evaluation

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

Comment - “ Very careing and friendly. Expla... ”

Very careing and friendly. Explained all test results.

Verified Patient

“Very careing and friendly. Expla...”

Very careing and friendly. Explained all test results.

Anonymous 02/10/2026

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Review by Anonymous on January 24, 2026 -

Baylor Scott & White Legacy Heart Center - Plano Preston Road - 6601 Preston Rd

Office & Staff Evaluation

Practice Evaluation

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

Provider Evaluation

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

Comment - “ No nonsense great service... ”

No nonsense great service

Verified Patient

“No nonsense great service...”

No nonsense great service

Anonymous 01/24/2026

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Review by Anonymous on January 13, 2026 -

Baylor Scott & White Legacy Heart Center - Plano Preston Road - 6601 Preston Rd

Office & Staff Evaluation

Practice Evaluation

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

Provider Evaluation

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

Comment - “ Well organized, well run, helpfu... ”

Well organized, well run, helpful employees

Verified Patient

“Well organized, well run, helpfu...”

Well organized, well run, helpful employees

Anonymous 01/13/2026

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Review by Anonymous on March 10, 2026 -

Baylor Scott & White Legacy Heart Center - Plano Preston Road - 6601 Preston Rd

Office & Staff Evaluation

Practice Evaluation

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

Provider Evaluation

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

Comment - “ Pleasant and thorough exam... ”

Pleasant and thorough exam

Verified Patient

“Pleasant and thorough exam...”

Pleasant and thorough exam

Anonymous 03/10/2026

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Review by Anonymous on March 03, 2026 -

Baylor Scott & White Legacy Heart Center - Plano Preston Road - 6601 Preston Rd

Office & Staff Evaluation

Practice Evaluation

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

Provider Evaluation

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

Comment - “ Was great. Very confident in Dr'... ”

Was great. Very confident in Dr's competence.

Verified Patient

“Was great. Very confident in Dr'...”

Was great. Very confident in Dr's competence.

Anonymous 03/03/2026

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Review by Anonymous on February 10, 2026 -

Baylor Scott & White Legacy Heart Center - Plano Preston Road - 6601 Preston Rd

Office & Staff Evaluation

Practice Evaluation

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

Provider Evaluation

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

Comment - “ Professional and caring... ”

Professional and caring

Verified Patient

“Professional and caring...”

Professional and caring

Anonymous 02/10/2026

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Review by Anonymous on January 16, 2026 -

Baylor Scott & White Legacy Heart Center - Plano Preston Road - 6601 Preston Rd

Office & Staff Evaluation

Practice Evaluation

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

Provider Evaluation

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

Comment - “ A GREAT Doctor. Knowledgeable. L... ”

A GREAT Doctor. Knowledgeable. Listens. Communicates very well.

Verified Patient

“A GREAT Doctor. Knowledgeable. L...”

A GREAT Doctor. Knowledgeable. Listens. Communicates very well.

Anonymous 01/16/2026

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Review by Anonymous on January 08, 2026 -

Baylor Scott & White Legacy Heart Center - Plano Preston Road - 6601 Preston Rd

Office & Staff Evaluation

Practice Evaluation

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

Provider Evaluation

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

Comment - “ Received excellent care.... ”

Received excellent care.

Verified Patient

“Received excellent care....”

Received excellent care.

Anonymous 01/08/2026

Office Hours

Internal Medicine Physician - Cardiovascular Disease

Highlights

Biography

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Summary

Provider Training

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Specialties

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Reviews

Office & Staff Evaluation

Provider Evaluation

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Affiliated Practices

Baylor Scott & White Legacy Heart Center - Plano Preston Road

Baylor Scott & White Legacy Heart Center - Prosper

Practice Colleagues

Jose Rivera, MD - Internal Medicine Physician

Nitin Kabra, MD - Internal Medicine Physician

Swati Patel, FNP, MSN - Nurse Practitioner

Katherine Janaszek, FNP - Family Medicine Physician, Internal Medicine Physician

Diana Nanayakkara, ACNP - Hospitalist, Nurse Practitioner

Karim Al-Azizi, MD - Internal Medicine Physician

Sameh Sayfo, MD - Internal Medicine Physician

Sahil Bakshi, DO - Internal Medicine Physician

Philip Morales, MD - Internal Medicine Physician

Kendra Harris, FNP - Nurse Practitioner

Procedures & Services

Procedures & Treatments Offered

Commonly Prescribed Medications

Accepted Insurance

Accepted Insurance