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About Us


Our doctors and nurse practitioners are dedicated to the comprehensive diagnosis and treatment of rheumatic diseases and connective tissue disorders. Conditions commonly treated include Rheumatoid Arthritis, Osteoarthritis, Lupus, Ankylosing Spondylitis, Osteoporosis, Vasculitis, Gout, Fibromyalgia, and many other illnesses.


The practice is comprised of five Board Certified Rheumatologists and two Certified Registered Nurse Practitioners.

We are conveniently located in Towson, MD and maintain admitting and consulting privileges at Greater Baltimore Medical Center and Franklin Square Hospital. 

Tazeen Rehman, MD

Dr. Rehman joined Rheumatology Associates in September 2012 after completing her Rheumatology Fellowship at Washington Hospital Center in Washington, DC.  She completed her Internal Medicine Residency through Johns Hopkins University at Sinai Hospital here in Baltimore where she also served as a Hospitalist.  Dr. Rehman is Board Certified in Internal Medicine and in Rheumatology.

Pam Lentz, CRNP

Ms. Lentz graduated from the University of Maryland School of Nursing in 1984 with her Bachelors of Science in Nursing. She worked five years at University of Maryland and for ten years at the world renowned Maryland Center for Limb Lengthening. In 2000 she graduated with her Masters degree from University of Maryland School of Nursing as a Family Nurse Practitioner.  She worked for eight years in general orthopedics and then in general internal medicine before joining Rheumatology Associates in January 2012.

Laura Grant, CRNP

Ms. Grant is a graduate of Loyola University Chicago Marcella Niehoff School of Nursing where she earned a Bachelor of Science in Nursing in 2011.  She was then employed at the Georgetown University Hospital as a Registered Nurse in the intermediate care cardiac telemetry unit while pursuing her Master of Science in Nursing at Catholic University of America.  She completed the Family Nurse Practitioner training at Catholic University and joined Rheumatology Associates of Baltimore in 2016

Howard W. Hauptman, MD

Dr. Hauptman has been in private practice since 1987.  He attended St. George’s University School of Medicine where he earned his medical degree.  Dr. Hauptman completed his Internship and Residency at Greater Baltimore Medical Center followed by a Fellowship in Rheumatology, Immunology and Connective Tissue Disease at the Medical College of Virginia.  He is Board Certified in both Internal Medicine and Rheumatology.  Dr. Hauptman serves as the Head of the Division of Rheumatology at Greater Baltimore Medical Center and Franklin Square Hospital Center.  He serves as part-time faculty at the Johns Hopkins School of Medicine in the Division of Rheumatology.

Bansari Gujar, MD

Dr. Gujar joined Rheumatology Associates in September 2014. She graduated from University of Mumbai’s Terna Medical College in Mumbai, India in 2000. She then completed her Residency training in Internal Medicine from University of Illinois/Christ Hospital and Medical Center in 2005. She was on faculty at University of Michigan in the Division of General Internal Medicine for several years, prior to her Fellowship in Rheumatology at the University of Maryland Medical Center in Baltimore. Dr. Gujar is Board Certified in both Internal Medicine and Rheumatology.

Sam Serafi, MD

Dr. Serafi joined Rheumatology Associates in August 2017 after completing his Rheumatology Fellowship at George Washington University  in Washington, DC.  He completed his Internal Medicine Residency at Medstar Union Memorial Hospital here in Baltimore.  He looks forward to establishing himself as a provider in the Baltimore community and is interested in all aspects of Rheumatology.  Dr. Serafi is Board  Certified in Internal Medicine and Rheumatology.

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