Our Team


(703) 492-6660
Greater Washington
Arthritis, Rheumatology and Osteoporosis Center

Dr. Payman Monshie, M.D., F.A.C.R

Dr. Payman Monshie, MD (Hashem Vahabzadeh-Monshie, MD) is founder of Greater Washington Arthritis, Rheumatology and Osteoporosis Center in Northern Virginia.  He is double board certified in Internal Medicine and Rheumatology and currently is Assistant Professor at the Department of Medicine at University of Maryland School of Medicine and Associate Medical Staff at Prince George’s Hospital.

Dr. Monshie successfully graduated on Top 1% of medical graduates from Azad University of Medical Sciences, where he received the Dean award for excellence in medicine; he completed his Internship and residency in New York and after completion of two years rheumatology research fellowship at MedStar Research Institute, subsequently completed his Rheumatology fellowship at Georgetown University Hospital in Washington, DC. 

During the fellowship, he pursued training in musculoskeletal Ultrasound to use this modality to diagnose joint and soft tissue rheumatism and perform precise ultrasound-guided joint injections.

Dr. Monshie is a fellow of the American College of Rheumatology and has participated in publishing multiple abstracts and manuscripts which were published in the American Journal of Rheumatology (Arthritis & Rheumatism) and Clinical Rheumatology, Journal of the international league of Association for Rheumatology .

Dr. Monshie has earned award for top abstract and oral presentation at 6th Annual Congress of Clinical Rheumatology and National Young Rheumatology Investigator and award for top poster at 10th Annual Rheumatology Fellows Forum from Rheumatism Society of District of Columbia in May, 2012.
Dr. Monshie has interest in managing Fibromyalgia, Gout, Osteoporosis, Rheumatoid arthritis, Osteoarthritis, Psoriatic arthritis and Lupus. Some of Dr. Monshie’s abstract and publication are listed below:

Psoriasis and psoriatic arthritis in African-American patients-the need to measure disease burden

Prevalence and Characteristics of Uveitis in US Veterans with Seronegative Spondyloarthritis

Psoriatic Arthritis in a Diverse Ethnic Cohort

Shoshana D. Katz, PA-C

Shoshana is a board certified Physician Assistant and is licensed to practice in D.C. and Virginia. Shoshana is well experienced to treat patients with acute and chronic pain associated with rheumatic disease and will utilize her experience in various clinical settings to provide care to patients seeking rheumatic care and pain management. She performs trigger point and ultrasound guided Intra-articular steroid injection to treat the variety of conditions associated with soft tissue rheumatism. Before joining The Greater Washington Arthritis, Rheumatology and Osteoporosis Center, Shoshana worked at National Spine and Pain Institute since 2013. Shoshana grew up in Virginia Beach, Virginia, and Boca Raton, Florida.

Dr. Mohammad Bahadori, M.D. , F.A.C.R.

Dr. Bahadori, M.D. is board certified rheumatologist and fellow of American College of Rheumatology with over 40 year experience in treating patients suffering form Arthritis.

Dr. Bahadori earned his medical degree from Ahvaz University School of Medicine in Iran. Shortly after, he moved to United States where he completed his Internship at Sinai Hospital of Baltimore and Residency at the Medical College of Pennsylvania in Philadelphia. He completed additional two years of fellowship in rheumatology at Cleveland clinic in 1974. Dr. Bahadori was clinical associate Professor in Cleveland clinic for two years (1974-1976); in 1978 he founded Arthritis Care Center and practiced as general Rheumatologist treating wide variety of arthritis and rheumatological conditions ranging from Fibromyalgia, osteoarthritis, rheumatoid arthritis and gout to lupus, vasculitis and rare autoimmune disorders; he is currently seeing patients at Greater Washington Arthritis, Rheumatology and osteoporosis center as daily basis.

Carlota Rodriguez

Carlota studied at Harrison College for Medical Assisting and received her Associates Degree in 2011. She first worked at an Urgent Care Clinic and started working at The Arthritis Care Center and Greater Washington Arthritis, Rheumatology and Osteoporosis Center in 2014. Carlota has learned so much working here and also come to know and love all her patients here.

Denise Simcic

Deniese found passion caring for others while worked for two non-profit organizations supporting adults with physical, mental, and behavioral challenges. She went to Everest College to become a Medical Assistant in 2010.  She first started working in general practice, but since 2012, she had the pleasure of working at the Arthritis Care Center and, now in 2017, Denise is working at Greater Washington Rheumatology and Osteoporosis Center.