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.
Chief Fellow, Interventional Cardiology: Ascension Saint John Hospital, Detroit, MI
Fellowship, Interventional Cardiology: Ascension Saint John Hospital, Detroit, MI
Chief Fellow, General Cardiology: Ascension Saint John Hospital, Detroit, MI
Fellowship, General Cardiology: Ascension Saint John Hospital, Detroit, MI
Chief Resident, Internal Medicine: Case Western Reserve University/St. Vincent Charity Medical Center, OH
Residency, Internal Medicine: Case Western Reserve University/St. Vincent Charity Medical Center, OH
Residency, Internal Medicine: Damascus University Hospitals/Al-Assad and Al-Mouasat Hospitals, Syria
Medical School, MD Degree: Al-Ba´ath University, Faculty of Medicine, Homs, Syria
PROFESSIONAL ASSOCIATIONS:
Fellow, Society of Cardiovascular Angiography and Interventions (FSCAI)
Fellow, American college of Cardiology (FACC)
PUBLICATIONS:
Alasaad et al.. "Association of Race with Long-term Outcomes in Patients undergoing Popliteal and Infrapopliteal Percutaneous Peripheral Arterial Intervention." Cardiovasc Revasc Med. 2018 Oct 11. pii: S1553-8389(18)30454-8. doi: 10.1016/j.carrev.2018.10.014. https://www.ncbi.nlm.nih.gov/pubmed/30401590
"Cardiogenic Shock Complicating Acute Myocardial Infarction Treated With Percutaneous Coronary Intervention Supported by Impella: Implications of Advanced Age and Refractory Shock on Outcomes" Crit Care Explor. 2021 Jun 11;3(6):e0447. doi: 10.1097/CCE.0000000000000447. eCollection 2021 Jun. https://pubmed.ncbi.nlm.nih.gov/34136823/
Poster Presentations:
Alasaad Mohammad MD, Gordin Justin L. MD, Nagarajan Vijay MD and Tang W. H. Wilson MD. "Correlates of Spirometry to Invasively Measured Pulmonary Arterial Hemodynamics in Advanced Chronic Heart Failure". Poster presented at: 9th Annual Scientific meeting of the Heart Failure Society of America (September 26-29, National Harbor, MD).; National Harbor, MD. (2015).
Mohammad Alasaad MD, Anwar Zaitoun MD, Hussein Othman MD, Suzan Szpunar PhD , Howard S. Rosman MD , Rajendra H. Mehta MD MS , Hiroshi Yamasaki MD. "Association of Race with Long-term Outcomes in Patients undergoing Popliteal and Infra-popliteal Percutaneous Peripheral Arterial Interventions" Poster presented at: AHA American Heart Association (November 13th, Anaheim, CA). (2017).
December 2013- Present- Appropriate Use Criteria for Peripheral Vascular Intervention Writing Group. Steven R. Bailey, MD, FACC, MSCAI(chair); Joshua A. Beckman, MD, FACC; Timothy Dao, MD; Sanjay Misra, MD; Christopher Owens, MD, MSc; Piotr Sobieszczyk, MD, RVT; Christopher J. White, MD, FACC, MSCAI. American College of Cardiology Foundation 2014 (Publication pending)
Februrary 2013 - Imaging of vulnerable plaques using near-Infrared spectroscopy For risk stratification of atherosclerosis. Saurabh Sanon, Timothy Dao, Vani P. Sanon, Robert Chilton Curr Atheroscler Rep. 2013 Feb;l5(2):304. doi: 10.1007/sl1883-012-0304-6.
July 2012 - Potential Cardlometabolic Benefits of Renal Artery Denervation in Diabetics. Suraj Maraj, Rikesh Patel, Saurabh Sanon, Timothy Dao, Rene Oliveros, Robert Chilton Journal of Diabetes and Metabolism. 2012, S3:007. doi:10.4 172/2155-6156.S3-007
July 2004 - Neuroactive steroids have multiple actions to potentiate GABAA receptors. Gustav Akk, John R. Bracamontes, Douglas F. Covey, Alex Evers, Timothy Dao, Joe Henry Steinbach. The Journal of Physiology 2004: 558: ( l), pp. 59-7 4. l 0.1113/jphysiol.2004.066571
MEDIA (POSTER PRESENTATIONS):
November 2014 - Traumatic acute myocardial Infarction following blunt chest trauma. AHA 2014 Scientific Sessions Nazilla Naderi, MD: Timothy Dao, MD: Marvin Eng, MD Chicago, II
May 2014 - Aortic Annular Sizing: A comparative analysis between CT Derived measurements and surgical sizers. SCAI2014 Annual Meeting Timothy Dao, MD; Marvin Eng, MD; Edward Sako, MD, PhD; Andrea J. Carpenter MD, PhD; Chad Stasik, MD, Steven R. Bailey, MD, FACC, MSCAI. Las Vegas, NV
September 2005 - The Bounty of Plants. Research Louisville! Natural Products Laboratory Department of Chemistry, University of Louisville. Summer Research Scholar Program University of Louisville School of Medicine, Louisville, KY
September 2002 - Pharmacological Effects ot ACN and Ethanol Interactions on GABA-A Receptors Expressed in Xenopus Oocytes. Howard Hughes Medical Dept. of Biology, Dept. of Anesthesiology
Ambulatory Care Achievement Award, Baylor College of Medicine (June 2014)
Outstanding Student Award, Department of Internal Medicine, Texas Tech School of Medicine (2011)
Alpha Omega Alpha Honor Medical Society (2010-present)
University Scholar Award (2005-2006, 2006-2007)
Honoree for College of Science Academic Excellence Reception (2003)
The National Dean's List (2002-2007)
PUBLICATIONS/MEDIA:
Thamwiwat, A, Sudhakar D, Paniagua D, and Denktas AE. Suspected coronary fat embolism after liposuction. Catheter Cardiovasc Interv. 2018;1-4.
Thamwiwat A, Levine GN. Chapter 14: Chest pains and Angina. Cardiology Secrets, 5th Edition. Ed. Glenn N. Levine. Philadelphia: Elsevier, 2018.125-134. Print.
Thamwiwat A, Mejia R, Nutman TB, Bates JT. (2014). Strongyloidiasis as a cause of chronic diarrhea, identified using next-generation Strongyloides stercoralis-specific immunoassays. Curr Trop Med Rep. 2014; 1:145-147.
Hira RS, Thamwiwat A, Kar B. Tandem. Heart placement for cardiogenic shock in acute severe mitral regurgitation and right ventricular failure. Catheter Cardiovascular Interv. 2014;82(2):319-322.
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
Ramon (Ray) Kumar, M.D., is board-certified in cardiovascular disease and interventional cardiology. He specializes in coronary artery disease, peripheral vascular disease, congestive heart failure, palpitations, and valve disease. Dr. Kumar practices at HeartPlace Allen, Texas, where he is committed to providing the highest quality of care to his patients.
Dr. Kumar earned his Doctor of Medicine degree at UT Southwestern in Dallas, Texas. He completed his residency in internal medicine at Harvard Medical School/Beth Israel in Boston, Massachusetts, followed by multiple fellowships at the prestigious Texas Heart Institute in Houston, Texas.
Dr. Kumar has long served as a leader in the field of cardiology. His extensive experience includes directing catheterization labs and serving as STEMI Director in multiple healthcare systems, ensuring optimal care for acute heart attack patients. With his expertise in peripheral vascular interventions, complex coronary revascularization, and valve disease procedures, Dr. Kumar often manages challenging cases referred from across Texas and beyond.
Dr. Kumar’s dedication to his patients stems from a personal commitment to treating each individual like family, inspired by his own experiences. Outside of his medical practice, Dr. Kumar enjoys spending time with his wife and three children, weightlifting, swimming, playing pickleball, and exploring physics and philosophy.
BOARD CERTIFICATIONS:
Cardiovascular Disease
Interventional Cardiology
EDUCATION:
Fellowship, Interventional Cardiology: Texas Heart Institute, Houston, TX
Residency, Internal Medicine: Harvard Medical School/Beth Israel, Boston, MA
Medical School, MD Degree: UT Southwestern, Dallas, TX
HONORS & AWARDS:
Outstanding Resident Teacher Award, Harvard Medical School
Chief Interventional Fellow, Texas Heart Institute
OFFICE LOCATION:
HeartPlace Allen 1105 N. Central Expy., Bldg. 2 Ste. 2330 Allen, TX 75013
