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Our office will be closed on Monday, 1/20/2025 due to the Martin Luther King holiday. This includes both offices (Rockville and Olney) and the lab. We will resume normal business hours on Tuesday, 1/21/2025.

Our office will be closed on Monday, 1/20/2025 due to the Martin Luther King holiday. This includes both offices (Rockville and Olney) and the lab. We will resume normal business hours on Tuesday, 1/21/2025.

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Meet the Team

Nora Gleason, AGNP

Nurse Practitioner

Accepts New Patients

Offers Virtual Visits

Joseph Happel, MD

Physician - Internist

Accepts New Patients

Offers Virtual Visits

Jon Shirazi, CRNP

Nurse Practitioner- Sleep/Pulmonology Department

Offers Virtual Visits

Dimitrios Avgeropoulos, MD

Physician/Sports Medicine

Accepts New Patients

Offers Virtual Visits

Ira Berger, MD, FACCP

Physician/Partner, Internist/Pulmonologist

Accepts New Patients

Offers Virtual Visits

Sara Brooks, MD, FAAD

Physician - Dermatologist

Offers Virtual Visits

Maria Caccavo, CRNP

Nurse Practitioner

Accepts New Patients

Offers Virtual Visits

Robert Chen, DO

Physician - Internist

Accepts New Patients

Offers Virtual Visits

Byron Cooper, MD

Physician - Pulmonologist

Accepts New Patients

Offers Virtual Visits

Kelly Cowen, MD

Physician - Family Medicine

Offers Virtual Visits

Samantha Day, MD

Physician - Internist

Accepts New Patients

Offers Virtual Visits

Terri Esterowitz, MD

Physician - Internist

Offers Virtual Visits

Siobhan Forbes, MPH, CRNP

Nurse Practitioner- Gastroenterology Department

Offers Virtual Visits

Devmith Gajadeera, MD

Physician - Internist

Accepts New Patients

Offers Virtual Visits

Rachel Glaser, MD

Physician - Rheumatologist

Offers Virtual Visits

Garth Grey, CRNP

Nurse Practitioner

Accepts New Patients

Offers Virtual Visits

Daphna Henkin, MD

Physician/Partner - Internist

Offers Virtual Visits

Allison Hockman, DO

Physician- Family Medicine

Offers Virtual Visits

Stefanie Holtzer, CRNP

Nurse Practitioner- Adult/ Gerontology Primary Care

Offers Virtual Visits

Christina Johannessen, CRNP

Family Nurse Practitioner

Accepts New Patients

Offers Virtual Visits

Katherine Kemper-Dean, CRNP

Nurse Practitioner - Adult/Gerontology

Offers Virtual Visits

Shishir Khetan, MD

Physician/Partner - Internist

Offers Virtual Visits

Susan Kioko, CRNP

Director of Quality Improvement

Offers Virtual Visits

Adrienne LaFleur, MD

Physician - Family Medicine

Offers Virtual Visits

Karen Levin, CRNP

Nurse Practitioner - Internal Medicine

Offers Virtual Visits

Asefa Mekonnen, MD , FCCP, FAASM

Physician/Partner Sleep/Pulmonologist

Accepts New Patients

Offers Virtual Visits

Michal Moskowitz, PhD

Clinical Psychologist

Offers Virtual Visits

Stephanie Park, PhD

Clinical Psychologist

Offers Virtual Visits

Rahul Patel, MD

Physician/Partner - Internist

Offers Virtual Visits

Shashank Patel, MD

Physician/ Partner - Internist

Offers Virtual Visits