John Hollowell, MD

University	Degree	Focus	Graduated
Louisiana State University Health Sciences Center Shreveport	Doctorate	Other	1985
UTMB-Galveston	Doctorate	Other	1986
University of Texas Medical Branch	Doctorate	Other	1988
Loma Linda University Medical Center	Doctorate	Other	1991
Hospital of the Good Samaritan	Doctorate	Other	1992

Institution	Focus	Year
Internship - UTMB-Galveston	Internal Medicine	1986
Residency - UTMB-Galveston	Internal Medicine	1988
Residency - University of Texas Medical Branch	Internal Medicine	1988
Fellowship - Hospital of the Good Samaritan	Interventional Cardiology	1992
Fellowship - The Hospital of The Good Samaritan	Interventional Cardiology	1992
Fellowship - Loma Linda University Medical Center	Cardiology	1991
Fellowship - Loma Linda University	Cardiology	1991

Certification	Cert. Body	Year
Urology	Urology	Not Specified

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Review by Anonymous on October 10, 2025 -

Baylor Scott & White Legacy Heart Center - McKinney - 5236 W University Dr Ste 4100

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 service, very knowledg... ”

Excellent service, very knowledgeable Dr

Verified Patient

“Excellent service, very knowledg...”

Excellent service, very knowledgeable Dr

Anonymous 10/10/2025

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Review by Anonymous on September 28, 2025 -

Baylor Scott & White Legacy Heart Center - McKinney - 5236 W University Dr Ste 4100

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 listens and addresses all pro... ”

He listens and addresses all problems discussed.

Verified Patient

“He listens and addresses all pro...”

He listens and addresses all problems discussed.

Anonymous 09/28/2025

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Review by Anonymous on September 07, 2025 -

Baylor Scott & White Legacy Heart Center - McKinney - 5236 W University Dr Ste 4100

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 - “ I've been a patient of Dr. Hollo... ”

I've been a patient of Dr. Hollowell and my mother, who died in 2011, was a patient before me. I have complete confidence in him.

Verified Patient

“I've been a patient of Dr. Hollo...”

I've been a patient of Dr. Hollowell and my mother, who died in 2011, was a patient before me. I have complete confidence in him.

Anonymous 09/07/2025

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Review by Anonymous on August 27, 2025 -

Baylor Scott & White Legacy Heart Center - McKinney - 5236 W University Dr Ste 4100

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 very professio... ”

Knowledgeable and very professional

Verified Patient

“Knowledgeable and very professio...”

Knowledgeable and very professional

Anonymous 08/27/2025

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Review by Anonymous on August 21, 2025 -

Baylor Scott & White Legacy Heart Center - McKinney - 5236 W University Dr Ste 4100

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 very professional.... ”

Always very professional.

Verified Patient

“Always very professional....”

Always very professional.

Anonymous 08/21/2025

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Review by Anonymous on October 08, 2025 -

Baylor Scott & White Legacy Heart Center - McKinney - 5236 W University Dr Ste 4100

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 has great reputation. A numbe... ”

He has great reputation. A number of my friends have been saved by his practice.

Verified Patient

“He has great reputation. A numbe...”

He has great reputation. A number of my friends have been saved by his practice.

Anonymous 10/08/2025

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Review by Anonymous on September 10, 2025 -

Baylor Scott & White Legacy Heart Center - McKinney - 5236 W University Dr Ste 4100

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 very rude. He spoke down ... ”

He was very rude. He spoke down to me and did nothing t listen to me. I have NEVER had an experience like this before with a professional doctor. It was awful and I changed doctors before I even left the office.

Verified Patient

“He was very rude. He spoke down ...”

Anonymous 09/10/2025

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Review by Anonymous on August 31, 2025 -

Baylor Scott & White Legacy Heart Center - McKinney - 5236 W University Dr Ste 4100

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 Hollowell and staff have prov... ”

Dr Hollowell and staff have provided me with outstanding care for 26 years

Verified Patient

“Dr Hollowell and staff have prov...”

Dr Hollowell and staff have provided me with outstanding care for 26 years

Anonymous 08/31/2025

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Review by Anonymous on August 22, 2025 -

Baylor Scott & White Legacy Heart Center - McKinney - 5236 W University Dr Ste 4100

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 listened to my issues - was a... ”

He listened to my issues - was able to develop a plan and to adjust my medication. I had a great visit with Dr and his staff.

Verified Patient

“He listened to my issues - was a...”

He listened to my issues - was able to develop a plan and to adjust my medication. I had a great visit with Dr and his staff.

Anonymous 08/22/2025

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Review by Anonymous on August 15, 2025 -

Baylor Scott & White Legacy Heart Center - McKinney - 5236 W University Dr Ste 4100

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 care.... ”

Excellent care.

Verified Patient

“Excellent care....”

Excellent care.

Anonymous 08/15/2025

Office Hours

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

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Affiliated Practices

Baylor Scott & White Legacy Heart Center - McKinney

Baylor Scott & White Legacy Heart Center - Plano Preston Road

Practice Colleagues

Alison Gouin, PA - Physician Assistant

Marc Shalek, MD - Internal Medicine Physician

Philip Morales, MD - Internal Medicine Physician

Nitin Kabra, MD - Internal Medicine Physician

Akash Rusia, MD - Internal Medicine Physician

Marcus McKenzie, MD - Internal Medicine Physician

Madison Holland, PA - Physician Assistant

Sameh Sayfo, MD - Internal Medicine Physician

Srini Potluri, MD - Internal Medicine Physician

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

Procedures & Services

Procedures & Treatments Offered

Commonly Prescribed Medications

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Accepted Insurance