Winston Marshall, MD

University	Degree	Focus	Graduated
University of Texas Southwestern Medical School	Doctorate	Other	1993
Baylor University Medical Center	Doctorate	Other	1999

Institution	Focus	Year
Internship - Baylor University Hospital	Internal Medicine	1994
Internship - Baylor University Medical Center	Internal Medicine	1994
Fellowship - Baylor University Hospital	Cardiology and Interventional Cardiology	1999
Fellowship - Baylor University Medical Center	Cardiology	1999
Residency - Baylor University Hospital	Cardiology and Interventional Cardiology	1996
Residency - Baylor University Medical Center	Internal Medicine	1996

Certification	Cert. Body	Year
Internal medicine	Internal Medicine	Not Specified

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Review by Anonymous on January 10, 2026 -

Baylor Scott & White The Heart Group - McKinney - 5236 W University Dr Ste 4450

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 - “ Kind and knowledgeable... ”

Kind and knowledgeable

Verified Patient

“Kind and knowledgeable...”

Kind and knowledgeable

Anonymous 01/10/2026

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Review by Anonymous on January 08, 2026 -

Baylor Scott & White The Heart Group - McKinney - 5236 W University Dr Ste 4450

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 - “ Excellent... ”

Excellent

Verified Patient

“Excellent...”

Excellent

Anonymous 01/08/2026

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Review by Anonymous on December 18, 2025 -

Baylor Scott & White The Heart Group - McKinney - 5236 W University Dr Ste 4450

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 - “ Knowledgeable and thorough... ”

Knowledgeable and thorough

Verified Patient

“Knowledgeable and thorough...”

Knowledgeable and thorough

Anonymous 12/18/2025

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Review by Anonymous on December 16, 2025 -

Baylor Scott & White The Heart Group - McKinney - 5236 W University Dr Ste 4450

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 Marshall has been my provider... ”

Dr Marshall has been my provider for more than couple of decades. I have in the past and do now now trust him totally with my heart health. He has never given me any reason to think otherwise.

Verified Patient

“Dr Marshall has been my provider...”

Dr Marshall has been my provider for more than couple of decades. I have in the past and do now now trust him totally with my heart health. He has never given me any reason to think otherwise.

Anonymous 12/16/2025

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Review by Anonymous on December 10, 2025 -

Baylor Scott & White The Heart Group - McKinney - 5236 W University Dr Ste 4450

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 sweet... ”

Very sweet

Verified Patient

“Very sweet...”

Very sweet

Anonymous 12/10/2025

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Review by Anonymous on January 09, 2026 -

Baylor Scott & White The Heart Group - McKinney - 5236 W University Dr Ste 4450

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 - “ On time, able to talk to easily... ”

On time, able to talk to easily

Verified Patient

“On time, able to talk to easily...”

On time, able to talk to easily

Anonymous 01/09/2026

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Review by Anonymous on December 19, 2025 -

Baylor Scott & White The Heart Group - McKinney - 5236 W University Dr Ste 4450

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 - “ Friendly, concerned and professi... ”

Friendly, concerned and professional

Verified Patient

“Friendly, concerned and professi...”

Friendly, concerned and professional

Anonymous 12/19/2025

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Review by Anonymous on December 18, 2025 -

Baylor Scott & White The Heart Group - McKinney - 5236 W University Dr Ste 4450

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 - “ He was great, I didn't have to W... ”

He was great, I didn't have to Waite long at all

Verified Patient

“He was great, I didn't have to W...”

He was great, I didn't have to Waite long at all

Anonymous 12/18/2025

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Review by Anonymous on December 11, 2025 -

Baylor Scott & White The Heart Group - McKinney - 5236 W University Dr Ste 4450

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 Marshall & staff are awesome!... ”

Dr Marshall & staff are awesome! They exhibit that perfect combo of knowledge & skill, blended with personality& humor!!( By the way, I'm RN)

Verified Patient

“Dr Marshall & staff are awesome!...”

Dr Marshall & staff are awesome! They exhibit that perfect combo of knowledge & skill, blended with personality& humor!!( By the way, I'm RN)

Anonymous 12/11/2025

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Review by Anonymous on November 21, 2025 -

Baylor Scott & White The Heart Group - McKinney - 5236 W University Dr Ste 4450

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 - “ Great experience... ”

Great experience

Verified Patient

“Great experience...”

Great experience

Anonymous 11/21/2025

Office Hours

Internal Medicine Physician - Interventional Cardiology, Internal Medicine Physician - Cardiovascular Disease

Highlights

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Office & Staff Evaluation

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Affiliated Practices

Baylor Scott & White The Heart Group - McKinney

Baylor Scott & White The Heart Group - Sherman

Practice Colleagues

Syed Sarmast, MD - Internal Medicine Physician

Paul Karagiannis, MD - Internal Medicine Physician

Luis Bowen, MD - Internal Medicine Physician

Martin Weiss, DO - Hospitalist, Internal Medicine Physician

Robert Widmer, MD - Internal Medicine Physician

JARED CHRISTENSEN, MD - Internal Medicine Physician

Michael Isaac, MD - Internal Medicine Physician

Fayez Raza, MD - Internal Medicine Physician

Modar Alom, MD - Internal Medicine Physician

Procedures & Services

Procedures & Treatments Offered

Commonly Prescribed Medications

Accepted Insurance

Accepted Insurance