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330 Brookline AveBoston, MA 02215
Dr. Rainer is on Doximity
As a Doximity member, you’ll join more than three million U.S. healthcare professionals—including 85+% of physicians, and 2/3 of all NPs and PAs—in a private, secure network.
- Gain access to free telehealth tools, such as our “call shielding” and one-way patient texting.
- Connect with colleagues in the same hospital or clinic.
- Read the latest clinical news, personalized to your specialty.
Education & Training
New York Presbyterian Hospital (Cornell Campus)Fellowship, Cardiovascular Disease, 2025
Beth Israel Deaconess Medical CenterResidency, Internal Medicine, 2023 - 2025
Beth Israel Deaconess Medical CenterInternship, Internal Medicine, 2022 - 2023
Emory University School of MedicineClass of 2022
Certifications & Licensure
MA State Medical License 2022 - 2025
Publications & Presentations
PubMed
- Arterial Pulse Tapping Artifact Mimicking Acute Coronary Syndrome on Electrocardiogram.Mriganka Nerkar, Katharine Rainer, Jesse Frye, David T Zhang, Mark B Hellerman
JACC. Case Reports. 2026-05-20 - Evaluating the J Wave as a Marker of Diastolic Dysfunction in Heart Failure With Preserved Ejection Fraction.Tooba Alwani, Ashley P Akerman, Nora Al-Roub, Constance Angell-James, Madeline A Cassidy
Journal of the American Society of Echocardiography. 2025-09-01 - 1 citationsAuthor Correction: External validation of artificial intelligence for detection of heart failure with preserved ejection fraction.Ashley P Akerman, Nora Al-Roub, Constance Angell-James, Madeline A Cassidy, Rasheed Thompson
Nature Communications. 2025-04-17
Press Mentions
Higher Doses of Vitamin D3 Do Not Reduce Cardiac Biomarkers in Older AdultsAugust 11th, 2026
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