Nisha Viswanathan, MD
Not Accepting New Patients

Nisha Viswanathan, MD

(she/her)
  • Internal Medicine
Average rating: 5.0
 
Santa Monica Internal Medicine |
1245 16th Street, Suite 305 Santa Monica, CA 90404

About

Dr. Nisha Viswanathan is a primary care and extensivist physician who practices in Santa Monica and Westwood. She works with medically complex patients and coordinates their care between the inpatient/hospital setting and the outpatient/clinic setting. She is Co-director of the UCLA Health COVID-19 ambulatory monitoring program and Director of the UCLA Long COVID program. She is a Fellow in the American College of Physicians, and is board certified in internal medicine.

Dr. Viswanathan received her medical degree from the University of Arkansas for Medical Sciences. She then completed her internal medicine residency at Mount Sinai Hospital in New York City. She earlier received her Bachelor of Science degree in biology from the University of Miami.

Dr. Viswanathan is a clinical instructor in the David Geffen School of Medicine at UCLA and is involved in resident education. She also researches gender-based differences in the medical profession, such as barriers that keep women from reaching leadership positions and why female physicians are promoted at a lower rate.

Dr. Viswanathan was raised in Little Rock, Arkansas. She speaks fluent Tamil and conversational Spanish. When not working, she enjoys outdoor activities, such as hiking and swimming, as well as traveling, reading, and hanging out with her husband and fluffy Shih Tzu.

Languages

English, Tamil

Education

Medical Board Certification

Internal Medicine, American Board of Internal Medicine, 2015

Residency

Internal Medicine, Mount Sinai Medical Center, 2015

Degree

MD, University of Arkansas for Medical Sciences, 2012

Recognitions

  • Super Doctors® Southern California Rising Stars, 2023, 2024, 2025

Hospital Affiliations

Ronald Reagan UCLA Medical Center

UCLA Santa Monica Medical Center

Areas of Focus

Research

Publications

  • Factors Associated with Post-Acute Sequelae of SARS-CoV-2 (PASC) After Diagnosis of Symptomatic COVID-19 in the Inpatient and Outpatient Setting in a Diverse Cohort. Link to pubmed.gov

Insurance

  • Aetna
  • Anthem Blue Cross
  • Blue Shield of California
  • Centivo
  • Cigna
  • First Health
  • Health Net of California
  • Interplan (part of HealthSmart)
  • Medicare Advantage
  • MultiPlan
  • UFCM Health System
  • Prime Health Services
  • Private Healthcare Systems (PHCS)
  • TRICARE
  • UnitedHealthcare

The list of health care plans above may not be comprehensive and could change. 
Please contact your benefits coordinator or health insurance company directly to verify coverage.

Visit our health insurance information page for more details.

Recognitions

  • Super Doctors® Southern California Rising Stars, 2023, 2024, 2025

Reviews

Overall rating: 5.0
88 total ratings | 56 reviews
5.0
November 24, 2025
Dr. V. Provided the very best medical explanations , that I can understand , for what is going on with my long Covid situation, with an emphasis on lung.. related to Covid lung damage and 02 into the blood stream… causing my S& S’s! My anxiety is allayed , in that 2 L of 02 works, to improve vision, cognitive improvement, stop chest pain .. improve everything, it is convincing!
5.0
November 19, 2025
She was one of the best doctors I have ever seen. She was extremely knowledgeable, very warm and personable and explained things in a way that I could understand. She took a lot of time with me (and would have taken more if I didn’t have to go to work) which is so unusual. She really inspired confidence
5.0
November 13, 2025
She was professional, caring and understanding!
5.0
November 10, 2025
She is a wonderful doctor! She is so caring, so professional, and she really listens to me. I really appreciate all of the attention she gives to me and the respect she gives me. She is just incredible.
5.0
October 30, 2025
Dr. V is AWESOME! She cares about me, my health and is a compassionate physician. She is also thorough!