The Office of Holly Ryerson Dahlman, MD, FACP

Patient Portal


Dr. Dahlman's Blog

Providers / Staff



Contact / Directions


HIPAA Policy










Survey GSIM

Green Spring Internal Medicine Dahlman

2360 W. Joppa Road
Suite 210
Lutherville, MD 21093

lyDahlman internist, internal medicine, Dr. Holly Dahlma



Dahlman, LuthervilleHolly Dahlman, Johns Hkins, Green Spring Medcal

































Holly Ryerson Dahlman, M.D. is a board-certified internal medicine physician and a member of the American College of Physicians.  From the Midwest originally, she settled here in Baltimore after graduating from the Johns Hopkins University School of Medicine.  She trained as an Osler House officer at the Johns Hopkins Hospital before entering private practice.  She is the founding member of Green Spring Internal Medicine, LLC.  The practice, a Level 3 PCMH, has won three national awards for innovative approaches using EHR to improve hypertension control.  Dr. Dahlman has given national talks on this topic.  She is co-chair of the Performance Improvement Workgroup for Aledade, a consortium of independent practice ACOs throughout the US.  She is passionate about improving healthcare delivery.  Her hobbies include cooking, hiking and travel.   Curriculum Vitae


Deanna Shapiro, PA-C is our Physician Assistant who has worked in health research crisis management since her graduation from Colorado College in 1996. She is a proud graduate of Towson-CCBC Physician Assistant Program, class of 2014. Her passions include equitable health care access here in the United States and across the globe. She has volunteered as a health care provider for rural communities in Ethiopia and Nepal. Next year, she hopes to take an Emergency & Disaster Preparedness Course led by the Israeli Defense Forces Medical Corps.  Deanna has a keen interest in the visual and performing arts. Here at the practice, Deanna has spearheaded home-based transition of care visits, reducing the risk of hospital readmission for homebound elders and person living with disability.


Shannon is a Certified Medical Assistant (CMA) and Certified Phlebotomy Technician (CPT). She has been with the practice since 2014. She serves as our Care Coordinator, assisting the Care Manager in coordinating care for high risk patient’s. Shannon is also the OSHA Officer for the practice. You can find her in the front or back office performing both clerical and clinical tasks. When not at work she enjoys spending time with her Fiancé and two daughters.

Ashleyis our Medical Office Assistant. She joined the practice in 2012 after Graduating from Fortis Institute of Towson with high honors. She can be seen at the front desk checking patients in and out. She is an integral part of our team as she also supports the medical assistants, handles daily accounting, medical records and does many administrative tasks. She monitors operations and keeps things organized to ensure patient flow runs smoothly. When not being amazing at her job, Ashley enjoys just hanging out with her family and watching football.

Juwanna is a Certified Clinical Medical Assistant (CCMA), she joined the practice in 2019. You can find Juwanna at the front desk or assisting patients. She serves as our Transition of Care coordinator, identifying ED visits, Admissions & Discharge’s from the hospital. In her free time, she volunteers for Remote Area Medical (RAM), a major nonprofit provider of free mobile clinics. She is also studying Healthcare Management at Maryville University

Abimbola (Abby) is a trained Physician, who received her training and license in Nigeria. She has over 6 years’ experience in clinical medicine, research and healthcare management. She also recently obtained a master’s degree in Regulatory Affairs from the University of Maryland, Baltimore. She currently works as the Clinical Care & Operations Manager. She is passionate about patient care and comprehensive follow up of patient’s in-between office visits. She also assists the CEO in the daily smooth operation of the practice.

Ebony is a Registered Medical Assistant (RMA). She joined the practice in 2019 and can be seen assisting patients in the back and front office. She serves as our Outreach Coordinator, organizing & executing registries. Ebony is working towards entering the nursing program at Howard County Community College. When not at work she enjoys spending time with her son & young daughter.

Chandra Brown - Elder Nurse Care Manager, Chandra, is an RN with over a decade of experience. She holds a BS in Psychology and Sociology from Florida A&M University and worked several years in the nonprofit sector through AmeriCorps, training and supervising community health workers. This gave her a first-hand learning experience on the impact of social determinants, emotional intelligence, and trauma-informed care. After serving for 3 years she answered her hearts calling to become a registered nurse through the CCBC. Chandra has an affinity for wholistic, patient-centered care with a relaxed relational approach.

Rebecca - Population Nurse Care Manager, Rebecca, joined the practice in 2019. She is a registered nurse, a graduate from Towson University’s BSN program. She has over six years of combined experience working on medical-surgical, orthopedic, geriatric and stroke units in Northwest Baltimore. Rebecca is highly interested in helping patients maintain health and wellness while preventing disease.