Medical Staff
Jonathan M. Adelson, M.D., FACR
Physician, Rheumatology

Dr. Adelson is the Medical Director of Arthritis and Pain Associates of P.G. County and the Osteoporosis
Center of P.G. County. He is board certified by the American Board of Internal Medicine in both
rheumatology and internal medicine. He is also an active Fellow Member of the American College of
Rheumatology (FACR). He is also certified in Clinical Densitometry by the International Society for Clinical
Densitometry.

Dr. Adelson graduated Magna Cum Laude from the University of Michigan with his B.A. in Philosophy in
1972 and received his M.D. from Johns Hopkins School of Medicine in 1977. He then completed his
residency in internal medicine at Georgetown University Hospital in 1980 and his fellowship in rheumatology
at Johns Hopkins Hospital in 1982.

He is an active member of the D.C. Rheumatism Society, the Lupus Foundation of Greater Washington, the
Maryland Lupus Foundation, Prince George's County Medical Society, and the American Medical
Association.

He was rated as one of America’s Top Physicians by the Consumers’ Research Council of America for 2006
and 2007 in the specialty of rheumatology.
Arthritis and Pain Associates of P.G. County
Donald E. Thomas, Jr., M.D., FACP, FACR, RhMSUS, CCD
Physician, Rheumatology

Dr. Thomas is a board certified rheumatologist in our practice since June 1998. He teaches at the Walter
Reed National Military Medical Center where he serves as an Assistant Professor of Clinical Medicine at the
Uniformed Services University of the Health Sciences in Bethesda, MD.  He is a Fellow member of the
American Board of College of Physicians (FACP) and the American College of Rheumatology (FACR). He
is also certified in Clinical Densitometry (CCD) by the International Society for Clinical Densitometry.  
He is the author of The Lupus Encyclopedia: A Comprehensive Guide for Patients and Families from The
Johns Hopkins University Press and serves as the Chair member of the Medical and Scientific Advisory
Board of the Lupus Foundation (DC/MD/VA) chapter and is a member of its Board of Directors.

He received his M.D. from Baylor College of Medicine in Houston, TX in 1989, his residency in internal
medicine from Brooke Army Medical Center in 1993, then his fellowship in rheumatology at Walter Reed
Army Medical Center in 1995.
He was amongst the first group of rheumatologists certified by the American College of Rheumatology in
the use of ultrasound for the diagnosis and treatment of rheumatic diseases (RhMSUS).

Awards include the AMA's Physician Recognition Award yearly since 2000 with “Commendation” added
from 2007 to the present. He is rated one of America’s Top Physicians by the Consumers’ Research
Council of America since 2004 in the specialty of rheumatology, has received the “Patients' Choice Award”
in 2008-2012 and “Most Compassionate Doctor” in 2011 by the American Registry in conjunction with Vitals.
com.  Washingtonian Magazine recognized him as one of Washington DC’s “Top Doctors” for rheumatology
in 2010 and 2012.
Yevgeniy Sheyn, M.D., M.P.H., FACR, RhMSUS, CCD
Physician, Rheumatology

Dr. Sheyn has been in our practice since 2004.
Dr. Sheyn originally graduated from the Russian State Medical University in 1995, Magna Cum Laude and
subsequently worked in Central institute of Hematology in Moscow. He  graduated from Internal Medicine
residency  at Jamaica Hospital Medical Center in NYC, NY; and finished his fellowship in rheumatology from
the University of North Carolina (UNC) at Chapel Hill in 2004. He also received Master of Public Health in
Epidemiology degree from UNC School of Public Health.

While he was at UNC, he actively participated in clinical research of rheumatologic diseases. He coauthored
articles on treatment of Sjögren’s syndrome and steroid induced osteoporosis and co-wrote chapter on
cardiac involvement in rheumatologic diseases in the renowned textbook of Netter's Cardiology.
Dr. Sheyn has been particularly active in using ultrasound for diagnosis of rheumatic diseases as well as
for ultrasond guided joint injections. He was amongst the first group of rheumatologists certified by the
American College of Rheumatology in the use of ultrasound for the diagnosis and treatment of rheumatic
diseases (RhMSUS). He is also trained to perform Xiaflex injections for nonsurgical treatment of
Dupuytren's contractures.
Dr. Sheyn is board certified in rheumatology and clinical densitometry. He is a Fellow Member of the
American College of Rheumatology (FACR), and an active member of the American Medical Association,
Maryland State Medical Society, and International Society for Clinical Densitometry. Dr. Sheyn holds AMA's
Physician Recognition Award with Commendation 2007 to the present.
He is one of America’s Top Physicians by the Consumers' Research Council of America in the specialty of
rheumatology, "Top Doctor" by
US News and World Report and "Top Doctor" by Castle Connolly Medical
Ltd.
Maria Cuadra, PA-C
Physician Assistant

Maria is a Physician Assistant with a special interest and training in rheumatology. She graduated with her
PA degree from the Charles Drew University of Medicine and Science in Los Angeles, CA, in 2007. She has
also received special training in pain management and primary care, as well. She grew up locally in to
Adelphi, MD, and has a strong interest in giving back to the community. She strives continuously to give first
rate care to her patients.
Maria Julienne P. San Juan, R.N., B.S.N.
(a.k.a. "ienne")
Registered Nurse

Ienne has worked with us since 2001. She worked first as a medical assistant for 3 years, and now as one
of our Registered Nurses after receiving her Bachelor’s of Science in Nursing in May 2004 at University of
MD at Baltimore, School of Nursing. She runs the infusion center at the office after launching its first
opening in March 2009.

Also, she currently works at the University of Maryland Medical Center in Baltimore, MD at the Surgical
Intensive Care Unit. She is an active member of the American Nurses' Association, American Association of
Critical Care Nurses and Rheumatology Nurse’s Society.
Toni Proctor, R.N.
Registered Nurse

Toni has been an important part of our practice since 1988. She received her R.N. degree from Prince
George's County Community College in 1979. She also works at Prince George's Hospital and is certified in
Medical/Surgical nursing.
Rukmini Madhuri Konatalapalli, MD, FACR

Dr. Konatalapalli earned medical degree from Kasturba Medical College, Mangalore, India, in 2001. She
completed her residency in Internal Medicine at Prince George’s Hospital Center in Maryland. Soon after,
Dr. Konatalapalli joined Washington Hospital Center, D.C as a Research Fellow in Rheumatology and
completed the Clinical Fellowship in Rheumatology and board certified in rheumatology and internal
medicine.  

During her fellowship at Washington Hospital Center, Dr. Konatalapalli was involved in many research
projects. She was the lead investigator in the study of Axial Gout, which was presented at the annual
scientific meetings of American College of Rheumatology (ACR) in Atlanta and Washington, D.C., and
published in the ‘Journal of Rheumatology’ (2009).

Dr. Konatalapalli joined our practice in July 2011. Her areas of interest include systemic lupus and
crystalline arthropathies.

Maria Chou, MD, FACR
Physician, Rheumatology

Dr Chou joined our practice in November 2012. She is board certified in Internal Medicine
and Rheumatology by the American Board of Internal Medicine.

In 1999, she received her medical degree from New York Medical College in Valhalla, NY. She completed
her training in internal medicine at Loyola University Medical Center in Maywood, IL in 2002.
She then moved to the DC area and completed her fellowship training at Georgetown University in 2004.
During her fellowship, she participated in clinical research and presented her research at the American
College of Rheumatology's national conference in San Antonio, Tx. Her work in the use of stress
echocardiography in evaluation of Pulmonary Hypertension in patients with Scleroderma was
later published in the scientific journal, Chest. Since her fellowship, she has been in private practice in
Northern Virginia.

She has been recognized as one of America's Top Physicians by Consumers' Research COuncil of America
in 2009, 2010, and 2011. She also was named as one of Washignton DC's "Top Doctors" for Rheumatology
in the Washingtonian Magazine in 2008 and 2010 and Northern Virginia Magazine in 2011.
Board Certified Rheumatologists
Chikako Riester, MSN, CRNP



Chikako is a board certified Adult Nurse Practitioner.  She was born and raised in Japan and graduated with
a Bachelor of Science in Nursing from Aomori University of Health and Welfare.  Chikako graduated from
Villanova University in Pennsylvania where she obtained her Master’s of Science in Nursing.  She developed
a special interest in Rheumatology after doing part of her clinical rotation at a Rheumatology office.