Our doctors and office staff have multiple years of experience and have received outstanding reviews from patients and referring physicians for being knowledgeable, efficient, compassionate and accommodating. “Real people” answer the telephone and can assist you with any issues that you might have.

Gary V. Gordon, MD, FACP, FACR
Dr. Gordon has been a rheumatologist at Lankenau Hospital since 1982 and is currently the chief of the rheumatology section. He earned a BA from Brown University and M.D. from Yale School of Medicine. Dr. Gordon did his rheumatology fellowship at the University of Pennsylvania, has published articles in medical journals, written chapters in textbooks in the field of rheumatology, and is a well-respected and frequent lecturer throughout the country. He is a fellow in the American College of Rheumatology and The American College of Physicians. Dr. Gordon has been listed as a “Top Doctor” in Philadelphia Magazine and in the Main Line Today Magazine for many years. He is married with four children.

Thomas Harder, MD
Dr. Thomas Harder has practiced Rheumatology on The Main Line since 2000. Named numerous times as a “Top Doctor” in Philadelphia Magazine’s “Best of Philly,” he is committed to educating his patients and helping them manage their medical problems, including all inflammatory or degenerative arthritic processes, soft tissue rheumatism and osteoporosis. Dr. Harder completed his Rheumatology training at UCLA/Sepulveda in Los Angeles in 2000, and became Board Certified in Internal Medicine in 1992, and in Rheumatology in 2001. He grew up in a beautiful, small river town in southeastern Ohio, and graduated from Ohio University, summa cum laude and Phi Beta Kappa. Dr. Harder earned his medical degree from The Ohio State University, and for many years practiced Internal Medicine in Columbus, Ohio, and won awards as an educator. Outside the realm of traditional Rheumatology, he has a passion for teaching patients how to maintain proper physical fitness through strength training and proper flexibility exercises. Dr. Harder resides on The Main Line with his wife Debra and their two daughters. They enjoy gardening, hiking, the arts, and spending time with friends.

Amy Lundholm, DO
Dr. Lundholm is board certified in both rheumatology and internal medicine. She holds current membership in the Pennsylvania Osteopathic Association, American Medical Association and the American College of Rheumatology. Dr. Lundholm graduated from New York University with a BA in Psychology and completed her medical training at the Lake Erie College of Osteopathic Medicine. She was an Internal Medicine resident at Lankenau Hospital, following with joint fellowship in Rheumatology at Roger Williams Medical Center and Rhode Island Hospital. Prior to joining Main Line Rheumatology, Dr. Lundholm was in private practice in Ridley Park, PA. She completed additional coursework in the care of rheumatology patients during pregnancy at Women and Infants Hospital in Providence, RI.

Hyon Ju Park, MD
Dr. Hyon Ju Park is board certified in rheumatology and internal medicine, and is certified in Clinical Densitometry (bone density studies). Dr. Park graduated Columbia University in 2003 with a degree in biochemistry, and graduated Mount Sinai School of Medicine in New York, in 2007. She completed a residency in Internal Medicine at Barnes Jewish Hospital in St. Louis, Missouri as well as a rheumatology fellowship and additional research fellowship at Washington University in St. Louis, Missouri. Dr. Park has been an avid contributor to medical publishing including editorials, reviews, case reports and many book chapters. She has a special interest in lupus, vasculitis, and periodic fever syndromes.

Dr. Allawh Dr. Tanya Allawh, DO
Medical School
Edward Via College of Osteopathic Medicine
Hospital of the University of Pennsylvania
Thomas Jefferson University
Practice Philosophy
My primary clinical interests include the diagnosis and management of scleroderma, rheumatoid arthritis, systemic lupus erythematosus, spondyloarthrits, osteoarthritis and fertility/reproductive health. I am enthusiastic about the education of her patients and also enjoys teaching medical residents and trainees
Recent publication:
Piper, K., Beldick, S., Karsy, M., Allawh, T. Granulomatosis with polyangiitis masquerading as pituitary adenoma with apoplexy. Modern Rheumatology Case Reports 2021 April 15:1-5

  • American College of Physicians
  • American College of Rheumatology
  • Philadelphia Rheumatism Society