Cardiologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Chiropractor providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dentist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dermatologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Family Physician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
OB-GYN providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Ophthalmologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Orthopedic Surgeon providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Pediatrician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Physical Therapist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Podiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Psychiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Pulse Care Heart and Vascular is a cardiology practice in Frisco and in Carrollton, TX, led by Dr. Kiran Kumar Mangalpally, an interventional cardiologist. Dr. Mangalpally and his team specialize in the prevention, diagnosis, and treatment of heart and vascular conditions, including coronary artery disease, heart attack and peripheral artery disease. They offer a wide range of services, including non-invasive and invasive cardiovascular testing, preventive cardiology, and interventional cardiology procedures
Shahnaz Begum, MD, FACC, is a Board-certified cardiovascular disease specialist. She is an experienced physician who has been practicing cardiology for over 15 years.
Dr. Begum received her medical degree from State University of New York (SUNY) Downstate Medical College in New York. She subsequently completed 3 years of training in Internal Medicine followed by another 3 years of specialized training in Cardiovascular disease/cardiology. She then worked at SUNY Downstate as a faculty physician and Assistant Professor of Cardiology until she moved to Dallas. After that she worked at Texas Health Resource and Plano Presbyterian Hospital for several years as an attending Cardiologist. Since then, she has been providing outstanding cardiac care at Heart Care located in Frisco, Texas.
Dr. Begum has exceptional knowledge and skills. She excels in diagnosing and treating heart conditions including heart failure, coronary artery disease (CAD), valvular heart disease, arrhythmias, and many more. She also believes in prevention and therefore focuses on hypertension, cholesterol and multiple other conditions that can lead to heart diseases.
In addition to assuring that her patients benefit from cutting-edge new technology, Dr. Begum is compassionate and values their time. She ensures patients have a minimal wait while maximizing the time she spends with each person. She is an excellent listener and her patients love her for her thoroughness and personalized care that she provides to them.
At Heart Care, Dr. Begum offers exceptional care and ensures that her patients’ concerns are properly addressed. She welcomes her patients and looks forward to improving their heart health.
Pulse Care Heart and Vascular is a cardiology practice in Frisco and in Carrollton, TX, led by Dr. Kiran Kumar Mangalpally, an interventional cardiologist. Dr. Mangalpally and his team specialize in the prevention, diagnosis, and treatment of heart and vascular conditions, including coronary artery disease, heart attack and peripheral artery disease. They offer a wide range of services, including non-invasive and invasive cardiovascular testing, preventive cardiology, and interventional cardiology procedures
Fazel PA, Peterman MA, Schussler JM. Three-Year Outcomes and Cost Analysis in Patients Receiving 64-Slice Computed Tomographic Coronary Angiography for Chest Pain. American Journal of Cardiology 2009:104:498-500.
Peterman MA, Hamman BL, Schussler JM. 64-Slice CT angiography of saphenous vein graft anastomoses fashioned with interrupted nitinol clips. Annals of Thoracic Surgery 2007:83:1204.
Peterman MA, Donsky MS, Matter GJ, Roberts WC. A Starr-Edwards model 6120 mechanical prosthesis in the mitral valve position for 38 years. American Journal of Cardiology 2006:97:756-758.
Peterman MA, Farooq H, Roberts WC. Facts and principles learned at the 31st Annual Williamsburg Conference on Heart Disease. Baylor University Medical Center Proceedings 2004:17:106-115.
Peterman MA, Roberts WC. Syndrome of protein C deficiency and anterior wall acute myocardial infarction at a young age from a single coronary occlusion with otherwise normal coronary arteries. American Journal of Cardiology 2003:92
Fellowship, Interventional Cardiology: Mount Sinai Hospital, New York, NY
Fellowship, Interventional Cardiology: University of Utah, Salt Lake City, UT
Fellowship, Cardiovascular Disease: University of Connecticut Health Center, Mansfield, CT
Residency, Internal Medicine: University of Connecticut Health Center, Mansfield, CT
Internship, Internal Medicine: University of Connecticut Health Center, Mansfield, CT
Medical School, MS Science: University of Connecticut, Mansfield, CT
Medical School, MBBS (MD): Gandhi Medical College, India
HONORS/AWARDS:
D Magazine’s 2025 Best Doctors in Collin County
Special/Best Interventional Fellow Award – 2012: awarded annually by Department of Interventional Cardiology, Mount Sinai Hospital.
Maxwell O Phelps Scholarship Award – 2007: awarded by the Dept. Of Medicine, Univ. Of Connecticut, for a skilled physician dedicated to excellence in scientifically-based medical care and to meticulous attention to the needs of the patients; a scholarly clinician who exhibits those qualities of character and dedication to the practice of medicine, consistent with the best traditions of the specialty of Internal Medicine.
First position in statewide (Connecticut) ACP's Medical Jeopardy-2005, 2006 & 2007 & sixth position in the Nationwide ACP's Medical Jeopardy-2005.
Program Director's letter of Appreciation for recognition of overall performance in the program in PGY1 (2004) & PGY2 (2005).
Hamilton Eaton Award-2002: awarded by the Dept. Of Nutrition, University of Connecticut, Storrs, for the best prospective PhD candidate.
Scholarship & Book Grant awarded in the X & IX National Science Talent Search Exam - 1994 and 1995, India.
PUBLICATIONS/AWARDS:
Molecular and Cellular Endocrinology Journal: Altered lipid catabolism in the vitamin A deficient liver. Hye Won Kang, Gautam Reddy Bhimidi, Daniel P. Odom, Pierre-Jacques Brun, Maria-Luz Fernandez and Mary M. McGrane. Volume 271, Issues 1-2, 15 June 2007, Pages 18-27
National Kidney Foundation: Rhabdomyolysis as Complication of Ehrlichiosis in a Renal Transplant Recipient. Roy Jhagroo, Nayan Gowda, Christine Vigneault, Gautam Bhimidi, Mathew Brown, Anne Lally, David Hull, and K. Vinay Ranga. Spring Clinical Meetings Abstracts April 10-14, 2007. Volume 49, Issue 4, Pages B1 - B24
The FASEB Journal, Experimental Biology 2004, Differential Gene Expression Associated with Vitamin A Deficiency and the Metabolic Outcome of Disrupted Lipid and Carbohydrate Metabolism. Gautam B Reddy, Daniel P. Odom, Kristy L. West, Maria-Luz Fernandez, Mary M. McGrane., Publication Date: 03 / 2004, Volume: 18, No: 4, Pages: A101, #103.3.
The FASEB Journal, Experimental Biology 2002, Localization of Retinoid Receptors and Nuclear Receptor Co regulators in Adult and Fetal Mouse Liver by Immunohistochemistry (IHC), Saheli Ghoshal, Daniel P. Odom, Gautam Bhimidi, Mary M. McGrane., Publication Date: 03 / 2002, Volume: 16, No. 4, Part I., Pages: A263, #216.8.
Circulation Journal Supplement 2011, Does angiographic coronary calcification predict future major adverse cardiovascular events independent of other risk factors, including coronary artery disease severity? Theophilus Owan, Heidi T. May, Gautam B. Reddy, Hussein N. Yamani, Shadi Karabesheh, Tami L. Bair, Patty Li, Jeffrey L. Anderson, Donald L. Lappé, Joseph B. Muhlestein. Volume 124, Issue 21 Supplement: November 22, 2011, #A14704
Obagi A, Desai D, Mazahir U, Johnson D, Berger L. "Large Right Atrial Myxoma Presenting As Bilateral Pulmonary Embolism". Cureus. 2021 Jun 24;13(6):e15889. doi: 10.7759/cureus.15889. PMID: 34336411; PMCID: PMC8312776.
Obagi A, Tadepalli S, Reddy J, Cheriyath P, Okere A. "Complete Dissection of the Interventricular Septum Following Myocardial Infarction". Cureus. 2021 Jun 4;13(6):e15443. doi: 10.7759/cureus.15443. PMID: 34258112; PMCID: PMC8255049.
Ghetiya, S., Obagi, A., Calderon, D.. "‘Coughing Up Of Lung Tissue’: A Rare Case Of Plastic Bronchitis". Journal of the American College of Cardiology. 2017, Mar; 69(11): 2222.
Obagi, A., Ghetiya, S., Egnatovich, J., Heckkanellidis, J., Carson. M.,. (2017, March 18). "Compliance And Bleeding Using Updated Aha And Acc Heparin Dosing Guidelines For Non St Elevation Myocardial Infarction Patients". Journal of the American College of Cardiology, Volume 69, Issue 11 Supplement, March 2017 DOI: 10.1016/S0735-1097(17)34592-8.
Asif, A., Ghetiya, S., Obagi, A., Calderon, D., Mehandru, S., Masud, A., Salman, L., Dhamija, R.. "Subcutaneous ICDs"
Obagi, A., Calderon, D., Youdelman, B. (January, 2017). "Infective Endocarditis With Mechanical Aortic And Mitral Valves Replacement Complicated By Spontaneous Ascending Aortic Dissection And Rupture 20 Years Later". Poster presented at: MiamiValves; Miami, FL.
Obagi, A., Ghetiya, S., Carson, M., Berger, L.. (2017, May). "Incidental Finding of Basaloid Squamous Cell Carcinoma of the Thymus During Nuclear Stress Test Using Technetium (99mTc) Sestamibi". Poster presented at: American Thoracic Society (ATS); Washington, DC.
Obagi, A., Kretov, A., Demchuk, B., Johnson, D., Girardi, L., Chinnici. A.,. (2019, May). "Unusual Presentation of Chronic Type A Aortic Dissection (CTAD)". Poster presented at: American Thoracic Society (ATS); Dallas, TX.
Obagi A., Mazahir, U., Johnson, D., Berger, L.,. (2019, May). "Right Atrial Myxoma Presenting with Pulmonary Embolism". Poster presented at: American Thoracic Society (ATS); Dallas, TX.
Mazahir, U., Obagi, A., Okere, A., and Simsir, S.,. (March, 2019). "A Complicated Case Of Triple Valve Endocarditis With Emboli Successfully Treated With Surgery". Poster presented at: American College of Cardiology; New Orleans, LA.
Ghetyia, S., Kalathil, S., Obagi, A., Mccourt, K., Asif, A., Calderon, D. "The Use of Renin-Angiotensin System Inhibitors and Aldosterone Receptor Antagonists in Heart Failure Patients with CKD". Poster presented at: American Society of Nephrology; New Orleans, LA.
Bowden DM, Dubach MF, Snyder II RW, Askaris, German DC. Three-Dimensional Computer Analysis of MPTP-Induced Dopaminergic Cell Loss in the Monkey. Neuroscience Abstracts 9:166, 1985
Fellowship, Interventional Cardiology: St. John's Hospital and Medical Center, Detroit, MI
Fellowship, Cardiovascular Disease: St. John's Hospital and Medical Center, Detroit, MI
Chief Resident: St. John's Hospital and Medical Center, Detroit, MI
Residency, Internal Medicine: St. John's Hospital and Medical Center, Detroit, MI
Medical School, MD Degree: American University of the Caribbean, Coral Gables, FL
Undergraduate: State University of New York at Buffalo School of Medicine, Buffalo, NY
PROFESSIONAL APPOINTMENTS:
Medical Director of the North Central Texas Trauma Regional Advisory Council Cardiac Committee (Current)
Medical Director CV Services Chest Pain Center – Wise Health System (2/2023)
Physician of the Month – The Villages Regional Hospital (4/2017)
Chief Cardiology Fellow – Ascension St John Hospital (7/2013)
Chief Medical Resident – Ascension St John Hospital (7/2010)
Intern of the Year – Ascension St John Hospital (6/2008)
PUBLICATIONS:
Presentations and Electronic Media
Primary Care Physicians and Cardiologists: Recognizing and Bridging the Gaps in Lipid Management. Usman Hashmi MD, James J. Maciejko PhD FACC, Susan Szpunar PhD, Howard Rosman MD FACC – National Cardiovascular Disease Registry (NCDR) Conference – Thurs 3/7/13.
Case Presentation “Hearing Loss, Achilles Tendon Rupture, Acute Aortic Insufficiency: A Case of Cogan’s Syndrome” Usman Hashmi MD, Randy Tashjian MD, Howard Rosman MD Michigan Chapter ACC 2012 Cardiovascular Summit – Sunday September 30th, 2012 1st Place – Oral Case Competition.
A Case for Patient Safety: Central Venous Catheter Related Cardiac Injury Shwan Jalal MD, Usman Hashmi MD, Nancy Mesiha MD. Michigan ACC Regional Meeting.
Seeing the Moon but Missing the Stars: A case of Balint’s syndrome Sajid Ali MD, Tareq Noureldeen MD, Usman Hashmi MD, Shyam Moudgil MD St John Hospital and Medical Center. Accepted abstract submission and poster presented at ACP Michigan meeting April 2011.
Pre-operative Use of Antiplatelet Therapy in Patients Undergoing CABG: Need Antiplatelet Agents be Stopped for 5 days? Usman Hashmi MD, Ramamanohara Pai MD, Howard Rosman MD, Susan Szpunar PhD, Thomas Lalonde MD, Sanjay Batra MD Presented Research Day St John Hospital and Medical Center, Wednesday May 5th 2010.
A Shocking Revelation Usman Hashmi MD, Tejwant Singh MD, Ramamanohara Pai MD St John Hospital and Medical Center, Detroit, Michigan. Accepted abstract submission and poster presented at ACP Michigan meeting 10/2/2010.
Alveolar Hemorrhage in an Octogenarian: An Unusual Presentation for Wegener’s Granulomatosis Usman Hashmi MD, William Ventimiglia MD FACP, MD. St John Hospital and Medical Center, Detroit, Michigan. Accepted abstract submission and poster presented at ACP Michigan meetings 5/9/2008 and 9/13/2008.
Boka’s Notes Internal Medicine APP, A Guide for Interns, Residents & Medical Students. Kamran Boka, MD. Application for IPAD OS and Android Platforms. July 2012. Reviewer: Usman Hashmi,MD.
Publications – Journals and Books
Management of Gastrointestinal Bleeding in Patients Anticoagulated with Dabigatran Compared with Warfarin: A Retrospective, Comparative Case Review. Wuttiporn Manatsathit MD, HusseinAl-hamid MD, Pornchai Leelasinjaroen MD, Usman Hashmi MD, Peter A. McCullough MD Cardiovasc Diagn Ther. 2014 Jun;4(3):224-31.
Literature Review: Age, Sex, and Symptoms and the Prevalence of Significant Coronary Artery Disease by Coronary Computed Tomographic Angiography Nancy Mesiha MD, Usman Hashmi MD, Chatchawan Piyaskulkaew MD, Peter A. McCullough MD. Reviews in Cardiovascular Medicine. Vol 12 – No 4, 2012.
Firas Yazigi, MD, Usman Hashmi, MD, Henry Yuan, MD, Karthiek Narala, MD, Peter A. McCullough, MD, MPH, FACC, FACP, FAHA, FCCP. Kathleen Stergiopoulos, MD, PhD, FASE, FACC and David L. Brown, MD, FACC editors. “Cardiovascular Issues and Renal Disease” Evidence-Based Cardiology Consult, K. Stergiopoulous, D.L.Brown. Springer, November 2013.
“Seat Belt Use By Police: Should They Click It?” von Kuenssberg Jehle, MD Dietrich, David G. Wagner, James Mayrose, Usman Hashmi. Journal of Trauma-Injury Infection & Critical Care 58(1), January 2005: 119-120
Fellowship, Interventional Cardiology: Baylor College of Medicine, Houston, TX
Fellowship, Cardiovascular Disease: Baylor College of Medicine, Houston, TX
Residency, Internal Medicine: Baylor College of Medicine, Houston, TX
Medical School, MD Degree: Medical College of Virginia, Virginia Commonwealth, Richmond, Virginia
Graduate School, Masters of Science in Physiology Degree: Medical College of Virginia, Virginia Commonwealth, Richmond, Virginia
Undergraduate, Bachelors of Science in Biology Degree (Departmental Honors): Mary Washington College, Fredericksburg, Virginia
PROCEDURAL SKILLS:
Complex Coronary & Peripheral Interventions
Heart Catheterizations
Percutaneous Support Devices (Impella, IABP)
Venous Reflux Disease & Ablation Therapy
TAVR
PUBLICATIONS/MEDIA:
Publications:
Brown WR, Levine, G. “Chest Pains and Angina”. In Levine, G, Cardiology Secrets (4th , pp. 110-116). Philadelphia, PA: Elsevier Saunders. (2014).
Salloum FN, Abbate A, Houser J, Mudrick C, Roy S, Brown WR, Qureshi I, Prabhakar S and Kukreja R. “Sildenafil (Viagra) Attenuates Ischemic Cardiomyopathy and Improves Left Ventricular Function in Mice”. Am J Physiol Heart Circ Physiol. 2008 Mar;294(3):H1398-406. Epub. Jan 25, 2008.
Majid M, Brown WR, Divakaran V, Virani S. “Pulmonic Valve Endocarditis, A Case Report.” Submitted to Texas Heart Inst Journal.
Divakaran VG, Brown WR, Virani S. “Images in Echocardiography: A Freely Floating Saphenous Vein Graft.” Echocardiography. Vol 26. Aug, 2009.
Brown WR. Assisted Drs. R. Kukreja and F. Salloum in the investigation of PDE-5 inhibitors and their role in cardio protection. “Chronic Inhibition of PDE-5 with Sildenafil (Viagra) Attenuates Ischemic Cardiomyopathy and Improves Left Ventricular Function in Mice”. 2007.
Brown WR. Worked with Dr. T. Duane (Trauma Surgery) in the Medical College of Virginia Emergency Department. This research considered the value of pelvic/cervical spine films, and outcomes in various patient populations, including the obese and the diabetic patient. “The Role and Influence of Plain Films and Patient Demographics on Outcomes in the Trauma Bay." 2006.
Brown WR. Worked with Dr. J. Feher to complete a thesis in physiology research. “Continuous Chemiluminescent Measurement of Superoxide in Intact Rat Hearts During Ischemia-Reperfusion.” 2002-2003.
Brown WR. As a candidate for Biology departmental honors, worked with Dr. K. Loesser to complete a thesis in biological research. In May of 2001, presented research to the Virginia Academy of Science. The work subsequently appeared in the Academy’s publication. “Vitamin E: Efficacy of Gamma-Tocopherol vs. Alpha-Tocopherol in Atherosclerosis Prevention.” 2000-2001.
Poster Presentations:
Oliver PA, Brown WR, Regan C, Stoltzfus J, Ornato JP. “Correlation Between Heart Rate in Pre-Hospital Patients In Atrial Fibrillation With Rapid Ventricular Response And Blood Serum Magnesium Levels”. AAEM meeting, Las Vegas, NV. Feb 2010.
Salloum F, Abbate A, Brown WR, Hoke N, Kukreja RC. “Phosphodiesterase Inhibitors Reduce Myocardial Infarction, Apoptosis and Improve Post Ischemic Ventricular Function in Female Mice”. ACC meeting, Chicago, IL. March, 2008.
