Rockville Internal Medicine Group

01/25/2026

The Rockville office, Olney office and lab will be closed Mon, Jan 26th due to inclement weather. All applicable in-office appointments will be switched to virtual visits. Virtual visits will remain as scheduled. Phone lines will be open from 8:00am- 4:00pm. Please check our website for updates ❄️❄️❄️

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01/16/2026

Meet Dr. Samarasinghe! ⚕
Dr. Sam grew up in the idyllic tropical island of Sri Lanka and studied medicine in the nation's most prestigious medical faculty from which he graduated with honors. He then moved to the United States and completed residency in Danbury, CT. His primary areas of interest include preventative care, infectious diseases, nephrology and cardiovascular disease.
To leran more about Dr. Sam, visit 👉

Meet Dr. Pasindu Samarasinghe, an internal medicine physician at Rockville Internal Medicine Group. Come see us in Olney and Rockville, Maryland.

01/12/2026

From heartburn and IBS to constipation and colon cancer screening, our GI team is here to help. Appointments are available—don’t wait to feel better!
For more info visit 👉

Gastroenterology Rockville Internal Medicine Group’s team of gastroenterologists provide consultation and continuing care for patients with digestive issues and digestive system disorders.

01/05/2026

Flu activity is rising across the DMV area, with health departments reporting a significant increase in flu cases and related hospital visits. Influenza is a contagious respiratory virus that can cause sudden fever, cough, body aches, fatigue, and headaches, and it often hits harder than a common cold. If symptoms are developing or worsening, early evaluation and treatment are important—especially during peak flu season 🤧😷

Rockville Internal Medicine Group is a medical practice located in Rockville, Maryland. Meet our experienced team and schedule an appointment today!

12/26/2025

With travel, illness can sometimes follow. Our acute care walk-in clinic is open Monday–Friday for established RIMG patients!
To learn more visit 👉

Get Care Now Our Acute Care Walk-In Clinic offers quick treatment for acute, non-emergency concerns to established patients with a Primary Care Provider at RIMG or another Privia practice for common issues like:

12/23/2025

Meet Jon Shirazi, FNP-BC! ⚕
Working in sleep medicine and pulmonology, he is passionate about helping his patients sleep and breathe better. You may even catch him on the primary care side in our acute care walk-in clinic. Fun fact: Jon is a triplet! Outside the office, Jon enjoys music, spending time with his family, and is passionate about animal rescue.
To learn more or to book your consultation visit 👉

Meet Jon Shirazi, CRNP, a provider at Rockville Internal Medicine Group in Rockville, Maryland. Schedule an appointment online today.

12/23/2025

Meet Jon Shirazi, FNP-BC! ⚕
Working in sleep medicine and pulmonology, he is passionate about helping his patients sleep and breathe better. You may even catch him on the primary care side in our acute care walk-in clinic. Fun fact: Jon is a triplet! Outside the office, Jon enjoys music, spending time with his family, and is passionate about animal rescue.
To learn more or to book your consultation visit 👉 https://bit.ly/NPJonShirazi

12/17/2025

Gastroesopahgeal Reflex Disease (GERD) is a condition where stomach acid flows backward into the esophagus, the tube that carries food from the mouth to the stomach. Can you name some triggers? 🍽

Rockville Internal Medicine Group is a medical practice located in Rockville, Maryland. Meet our experienced team and schedule an appointment today!

12/11/2025

🌟Accepting New Patients!🌟
Meet Christina Johannessen, FNP-BC! ⚕🌸
With experience at top hospitals such as Johns Hopkins, Stanford, Georgetown, and Penn Medicine, Christina brings a well-rounded clinical background to every patient encounter. Outside the office, she loves hiking, baking cookies, discovering new foods, reading, and enjoying time with her family.
To learn more or book your appointment, visit 👉

Meet Christina Johannessen, FNP-BC, a provider at Rockville Internal Medicine Group in Rockville, Maryland. Schedule an appointment online today.

12/08/2025

Please join us in congratulating Dr. Khetan, MD, DABOM, on becoming a diplomate of the American Board of Obesity Medicine. ⚕👏
A respected internist and a key principal investigator at Velocity Clinical Research, Dr. Khetan now offers expanded expertise in metabolic and weight-related health.
To learn more about Dr. Khetan visit 👉

Looking for internists in Rockville, Maryland? Meet Dr. Shishir Khetan and the Rockville Internal Medicine Group team and schedule an appointment today.

12/05/2025

Please join us in congratulating Dr. Mekonnen MD, FCCP, FAASM, DABOM, on becoming a diplomate of the American Board of Obesity Medicine. 👏 In addition to his expertise in Sleep Medicine & Pulmonology, he now brings specialized knowledge in metabolic and weight-related health.
To learn more or schedule a consultation, visit 👉

Looking for internists in Rockville, Maryland? Meet Dr. Asefa Mekonnen and the Rockville Internal Medicine Group team and schedule an appointment.

12/03/2025

Asthma symptoms can appear when the airways react to triggers like cold air, exercise, allergens, or respiratory infections. Understanding your triggers is an important step toward managing symptoms and avoiding exacerbations.
Can you name some asthma triggers? 💨