Dr. William N. Pachas

MD, Rheumatologist

Dr. Pachas earned his MD degree from San Marcos University School of Medicine in Lima, Peru. He served his internship as a Medical Intern at the Washington Hospital Center in Washington, D.C. After internship Dr. Pachas was invited to Boston for postdoctoral training as a Fellow in Arthritis at Robert Breck Brigham Hospital affiliated with Harvard Medical School teaching hospital. He then completed residency training in Internal Medicine at the Lemuel Shattuck Hospital a Tufts University School of Medicine affiliate hospital. After residency training Dr. Pachas served as Clinical Fellow in Arthritis and Research Fellow in Medicine at Tufts University School of Medicine at Lemuel Shattuck Hospital. Following this training he served as Clinical and Research Fellow in Medicine at the Arthritis Unit of the Massachusetts General Hospital and Harvard Medical School. Dr. Pachas is board certified in Rheumatology.

Teaching: Dr. Pachas has served as Assistant Professor of Medicine at the University of Maryland School, Baltimore, Maryland (1970-1974), Associate Professor of Medicine at Wayne State University, Detroit, Michigan (1974-1975), Assistant Clinical Professor of Medicine, Harvard Medical School (1975-2004), and as Lecturer in Medicine, Tufts University School of Medicine (1975-1985). Dr. Pachas has served as a preceptor for the Tufts University School of Medicine course in Physical Diagnosis (1962-1964), medical students for the University of Maryland School of Medicine, Baltimore, Maryland (1970-1974). At the postdoctoral level Dr. Pachas has served as a preceptor for Rheumatology Fellows from the University of Maryland School of Medicine (1970-1975, and Rheumatology Fellows at Wayne State University School of Medicine (1974-1975). He has served as Instructor for the Introduction to Clinical Medicine (ICM) course at Harvard Medical School as Conference Leader and Lecturer in Rheumatology at Spaulding Rehabilitation Hospital in Boston. He has been a speaker, invited speaker or guest lecturer at numerous courses and seminars.

Staff Appointments: Dr. Pachas served as Chief of Rheumatology at the Veterans Administration Hospital in Baltimore, Maryland a teaching hospital of the University of Maryland School of Medicine (1970-1974), Associate in Rheumatology & Microbiology at Detroit General Hospital a teaching hospital of Wayne State University School of Medicine in Detroit, Michigan (1974-1975), Director of Rheumatology at Spaulding Rehabilitation Hospital of the Massachusetts General Hospital and Harvard Medical School (1975-2000), a Rheumatology Associate at the Arthritis Unit of the Massachusetts General Hospital (1992-2004). He also serves as a Consultant Rheumatologist at Spaulding Rehabilitation Hospital, Harvard Medical School, and Consultant Rheumatologist, at Youville Rehabilitation Hospital in Cambridge, Massachusetts and remains affiliated with the Department of Medicine at the Massachusetts General Hospital.

Honors: Dr. Pachas has been honored in becoming a member of the American College of Rheumatology. He has been awarded Research Grants from the Arthritis Foundation, the Veterans Administration Hospital of Baltimore, the Michigan Chapter of the Arthritis Foundation. Dr. Pachas has served as a Principal Investigator or Sub-investigator in clinical investigations for drug research from the pharmaceutical industry. Dr. Pachas has served on several editorial boards as a scientific reviewer, and has authored more than 25 publications in the medical journals and chapters in textbooks on chronic pain and infectious diseases. His studies have been presented and published at both national and international meetings.

Memberships: Dr. Pachas is a member of the American Society of Microbiology, the New England Rheumatism Society, and the American College of Rheumatology. He has served as a member of the Research Committee, Veterans Administration Hospital, Baltimore, MD (1970-1974), the Research Committee Rheumatology Unit at Wayne State University School of Medicine (1974-1975), Chairman of Post Graduate Medical Education, Massachusetts Rehabilitation Hospital, Boston, MA and a member of the Human Studies Committee at Spaulding Rehabilitation Hospital, Boston, MA (1976-1978), Chairman of the Infection Control Committee, Spaulding Rehabilitation Hospital, Boston, MA (1976-1982), Chairman of the Library Committee, Spaulding Rehabilitation Hospital, Boston, MA (1981), member of the Infection Control Committee, Spaulding Rehabilitation Hospital (1982-1998), and Chairman of the Committee on Medical Education at Spaulding Rehabilitation Hospital of Boston.

Research: Dr Pachas has extensive research training in the field of rheumatology that included serving as Fellow in Arthritis at Robert Breck Brigham Hospital a Harvard Medical School teaching hospital, a Clinical Fellow in Arthritis and Research Fellow in Medicine at Tufts University School of Medicine at Lemuel Shattuck Hospital, and as Clinical and Research Fellow in Medicine at the Arthritis Unit of the Massachusetts General Hospital and Harvard Medical School. He is author of six scientific reports, two papers submitted for publication, and four papers in preparation for publication. Dr. Pachas has been an invited speaker and presenter at numerous regional, national, and international research meetings. He is nationally and internationally known for his work on rheumatoid arthritis, crystalline arthritis, the aging process and fibromyalgia. Dr. Pachas has served as a co-investigator in numerous clinical drug trials. Dr. Pachas’ major research interests include the biology of bacterial L-forms, the biology of mycoplasma, experimental arthritis with micro-organisms and bacterial products, infectious with atypical bacteria; cell wall deficient, mycoplasma and bacterial genetics, and clinical rheumatology and rehabilitation. For the last 10 years, his research interest has been focused on fibromyalgia and chronic fatigue syndrome.

Clinical Goals: Dr. Pachas’ major clinical interests include rheumatology, osteoporosis, and fibromyalgia and their complications and treatment.

Dr. Pachas’ lectures and teaching responsibilities, clinical and basic science research, and clinical and surgical practice underscore his commitment to academic and clinical medicine.