The team at Arthritis Treatment Center

Antonio Valentin, M.D., F.A.C.R.

Rheumatologist

Dr. Valentin received his medical degree from New York Medical College in 2001 and completed residency in Internal Medicine at Stony Brook Medical Center in 2005. He joined the Arthritis Treatment Center after completing his rheumatology fellowship at the University of Connecticut Medical Center in 2007, and has held the position of Senior Clinical Instructor of Medicine at Tufts University School of Medicine.

C. Bruce Tallman, Jr., M.D., F.A.C.R.

Rheumatologist

Dr. Tallman received his medical degree from Boston University School of Medicine in 1989 and completed his fellowship training in rheumatology at the University of Massachusetts Medical Center. A rheumatologist at the Arthritis Treatment Center since 1994, he is board certified in Rheumatology and held the position of senior clinical instructor of medicine at Tufts University School of Medicine.

Donald R. Griger, M.D., F.A.C.R.

Rheumatologist

Dr. Griger received his medical degree from Dartmouth Medical School in 1992 and completed his fellowship training at Wilford Hall Medical Center, Lackland AFB, TX. A rheumatologist at the Arthritis Treatment Center since 2000, his prior experience includes serving as Chief of Rheumatology at David Grant Medical Center, Travis AFB, CA. He is board certified in rheumatology and a Fellow of the American College of Rheumatology.

donald-r-griger; scott-m-halista; dilpreet-k-singh; carter-bruce-tallman-jr; antonio-valentin

Dr. Antonio Valentin

Medical Doctor

Dr. Carter Bruce Tallman Jr.

Medical Doctor

Dr. Dilpreet K. Singh

Medical Doctor

Dr. Donald R. Griger

Medical Doctor

Dr. Scott M. Halista

Medical Doctor

Scott M. Halista, M.D., F.A.C.R., F.A.C.P.

Rheumatologist

Dr. Halista received his medical degree from Jefferson Medical College, Philadelphia, PA in 1982 and completed fellowship training in rheumatology at the Walter Reed Army Medical Center while serving on Active Duty with the U.S. Air Force. A rheumatologist at the Arthritis Treatment Center since 1992, he served as Division Chief in Rheumatology for the resident training program at Baystate Medical Center, Springfield, MA from 2007–2020.