Dr. Mary Wing Sum Tam, MD

Dr. Tam practices at Wilton Surgery Center in Wilton, Connecticut.

Dr. Tam's NPI, 1053802454, was assigned on May 22, 2018. Dr. Tam graduated from Tufts University School Of Medicine in 2018. Dr. Tam holds Florida license ME163116.

Dr. Tam's primary practice is Wilton Surgery Center, at 195 Danbury Road, Wilton, CT 06897. The practice phone is (203) 563-9470.

Dr. Tam's primary practice is Wilton Surgery Center in Wilton, Connecticut. Dmand AI also links Dr. Tam to 4 medical groups and 2 group practices and clinics, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tam practices, 3 sites in all. Vendor and product names are available with a free account.

Ophthalmology is Dr. Tam's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Tam is board certified in ophthalmology by the American Board of Ophthalmology. Dmand AI has Dr. Tam's licenses on file in 5 states: Florida, New York, Connecticut, Texas and Massachusetts.

Dmand AI lists cataract, cataract surgery with lens implant, dry eye, eye infection or inflammation, eyelid inflammation, glaucoma, glaucoma surgery and laser destruction of retinal or choroid lesions among the conditions Dr. Tam treats.

CMS data shows 96 Medicare services from Dr. Tam across 4 procedure codes in 2024, for 85 Medicare patients. Medicare paid $6,084 for them. Every service was in an office.

CMS counts 85 Medicare patients who saw Dr. Tam in 2024. The largest group is 65 to 74, with 41 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 71% are also on Medicaid. Their average risk score is 1.82, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Tam's median patient age at 74, with 57% women.

In 2024, Dr. Tam wrote 10,260 Medicare Part D claims for 2,369 patients. 43% of them were for generic drugs. CMS names the drug for 10,160 of them, across 36 drugs with 11 or more claims each, at $1,437,258 in total drug cost. In 2023, CMS named 1,113 claims across 19 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Tam for performance year 2024, reported as part of a group. Dr. Tam accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 28 procedures of cataract surgery by Dr. Tam, more than 52% of the clinicians it reports for that procedure.

Dmand AI links 4 papers to Dr. Tam, published from 2017 to 2022. 2022 was the busiest year, with 2. Dr. Tam's most frequent co-authors are Caroline Robyn Baumal, MD, Nariman S. Boyle, MD and Jay S. Duker, MD.

CMS Open Payments shows 111 general payments to Dr. Tam from 21 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 98% of the total. Abbvie Inc. paid the most, $1,536.

Dr. Tam graduated from Tufts University School Of Medicine in 2018.

Dr. Tam is in network with 17 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.