Expanded and renovated 
facility & better service
  • Electrocardiograms/EKG
  • Exercise Stress Tests
  • Nuclear Stress Testing​
  • Echocardiography with color Doppler
  • Stress Echo
  • Holter & MCOT Studies
  • Peripheral Vascular & Carotid Ultrasound
  • Abdominal Aortic Ultrasound
  • Pacemaker & Defibrillator Checks
  • INR/ Coumadin Checks
  • Vascular Studies
The Practice Dr. Marshall started over a decade ago has flourished over the period of time, and now Dr. Marshall has retired and his legacy is being continued by his successor Dr. Gundeep Singh MD.  We wish Dr. Marshall the best in his retirement, and Dr. Marshall has conveyed his best for the practice, its patients and the staff.

Dr. Gundeep Singh MD, FACC
Board Certified Interventional Cardiologist

Dr. Singh did his initial Medical School from India, and then his residency in Internal Medicine out of the University of Illinois program in Chicago, Illinois. He then further completed his sub specialty training in Cardiology and Interventional Cardiology at the University of Arizona, Sarver Heart Center at Tucson Arizona. He has been in practice in Arizona since his graduation. His scope of practice includes all aspects of general and Interventional Cardiology. He is well respected by his peers and referring physicians and very well liked by his patients. He is currently accepting new patients.

Dr. Jennifer Huang-Tsang DO, FACC

Board Certified Cardiologist
Dr. Huang graduated medical School from Midwestern University, AZ . She completed her Internal Medicine residency as well as her sub-specialty training in Cardiology at the University of Arizona at Sarver Heart Center in Tucson AZ.
 Dr. Huang is Board Certified in internal Medicine, Cardiovascular disease, Echocardiography and Nuclear Medicine. She is also RPVI certified. 
She has since been practicing in Tucson and her  scope of practice includes all aspects of general Cardiology with specific interests in  preventive Cardiology and general heart failure management.
​Dr. Huang believes in building close relationship with her patients and is passionate about patient education.
She enjoys spending her spare time hiking, traveling and spending time with her family.
She speaks English, Chinese and Dutch.

Jenna Edwards NP

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I have been a nurse practitioner at Marshall Cardiology since 2015. I received my undergraduate degree from the University of Arizona in 2000 and worked as a cardiac nurse at TMC for 15 years. Once my kids were all in school, I enrolled at Grand Canyon University to pursue my graduate degree. Luckily I was able to stay in cardiology upon graduation and cannot imagine doing anything else. I absolutely love my job, partnering with patients to improve their health and quality of life. Outside of work, I spend as much time as possible with my husband and kids. We love to be outdoors, hiking, traveling, and finding new adventures. I am also active in our church and would eventually like to pursue medical missions. I am thankful for the relationships I have developed with patients at Marshall Cardiology. I feel privileged to be a member of our patients’ care team and a small part their lives. ​

New Patients welcome : Early appointments available ​​

5170 E GLENN STREET, 
SUITE 130 & 160
​TUCSON, AZ 85712
MAIN: (520) 298-7900
FAX: (520)300-7182
[email protected]