Mark Tan, M.D.
Rheumatology Internal Medicine
Mark Tan, M.D. has been part of the Smithtown medical community since 2006 in independent practice. Trained at State University of New York at Buffalo School of Medicine (class of 1983), he has been practicing for over 43 years. Rheumatologists treat autoimmune and inflammatory conditions including rheumatoid arthritis, lupus, psoriatic arthritis, and more.
Data updated 2011-07-27 on CMS NPPES
Contact & Location
Practice Location
222 Middle Country Road Suite 312, Smithtown, NY 11787
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Rheumatologists treat autoimmune and inflammatory conditions including rheumatoid arthritis, lupus, psoriatic arthritis, gout, osteoarthritis, and vasculitis. They manage biologic therapies and joint-preserving treatments.
Taxonomy: 207RR0500X
Education & Training
State University of New York at Buffalo School of Medicine (Class of 1983)
Virtual Internal Medicine Care With Mark Tan
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Mark Tan for follow-ups, medication reviews, and ongoing care — no travel to Smithtown required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes.
Frequently Asked Questions
Common questions about Mark Tan
NPI records show Dr. Tan as active with telehealth listed in Smithtown, NY. Note: NPI status alone doesn't confirm open availability — always call ahead. Phone: (631) 724-8900.
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Contact Mark Tan
Practice Location
222 Middle Country Road Suite 312, Smithtown, NY 11787
This is a provider directory. Contact the office directly to schedule appointments.
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