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 February 11, 2026 -

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

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 - “ With Dr. Marshall since 2001... ”

With Dr. Marshall since 2001

Verified Patient

“With Dr. Marshall since 2001...”

With Dr. Marshall since 2001

Anonymous 02/11/2026

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Review by Anonymous on February 06, 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 - “ Been with them for 20 years... ”

Been with them for 20 years

Verified Patient

“Been with them for 20 years...”

Been with them for 20 years

Anonymous 02/06/2026

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Review by Anonymous on January 30, 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 - “ Totally cares for my health... ”

Totally cares for my health

Verified Patient

“Totally cares for my health...”

Totally cares for my health

Anonymous 01/30/2026

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Review by Anonymous on January 24, 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 - “ Physician and staff know their s... ”

Physician and staff know their stuff and are very professional in carrying out their duties

Verified Patient

“Physician and staff know their s...”

Physician and staff know their stuff and are very professional in carrying out their duties

Anonymous 01/24/2026

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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 February 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 Not rated
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 had saved my life more than o... ”

He had saved my life more than once!

Verified Patient

“He had saved my life more than o...”

He had saved my life more than once!

Anonymous 02/08/2026

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Review by Anonymous on February 05, 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 - “ Dr. Marshall goes way beyond -- ... ”

Dr. Marshall goes way beyond -- cares so deeply for his patients and goes to bat for them, every time.

Verified Patient

“Dr. Marshall goes way beyond -- ...”

Dr. Marshall goes way beyond -- cares so deeply for his patients and goes to bat for them, every time.

Anonymous 02/05/2026

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Review by Anonymous on January 25, 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 - “ Always a positive and informativ... ”

Always a positive and informative visit to DR. Marshall's office.

Verified Patient

“Always a positive and informativ...”

Always a positive and informative visit to DR. Marshall's office.

Anonymous 01/25/2026

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Review by Anonymous on January 14, 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 - “ Best heart dr in north Texas... ”

Best heart dr in north Texas

Verified Patient

“Best heart dr in north Texas...”

Best heart dr in north Texas

Anonymous 01/14/2026

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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

Office Hours

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

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Affiliated Practices

Baylor Scott & White The Heart Group - McKinney

Baylor Scott & White The Heart Group - Sherman

Practice Colleagues

JARED CHRISTENSEN, MD - Internal Medicine Physician

Modar Alom, MD - Internal Medicine Physician

Luis Bowen, MD - Internal Medicine Physician

Paul Karagiannis, MD - Internal Medicine Physician

Syed Sarmast, MD - Internal Medicine Physician

Ali Agha, MD - Internal Medicine Physician

Michael Isaac, MD - Internal Medicine Physician

Martin Weiss, DO - Hospitalist, Internal Medicine Physician

Robert Widmer, MD - Internal Medicine Physician

Fayez Raza, MD - Internal Medicine Physician

Procedures & Services

Procedures & Treatments Offered

Commonly Prescribed Medications

Accepted Insurance

Accepted Insurance