Dr. Steven Antonio Tamesis, MD

Dr. Tamesis practices at Good Samaritan University Hospital in West Islip, New York, part of Diocese of Rockville Centre.

Dr. Tamesis' NPI, 1528447240, was assigned on May 27, 2015. Dr. Tamesis graduated from Far Eastern University Nicanor Reyes Medical Foundation in 2012. Dr. Tamesis' Pennsylvania license number on file is MD474915.

Dr. Tamesis' primary practice is Good Samaritan University Hospital, at 1000 Montauk Highway, West Islip, NY 11795 in Suffolk County. The practice phone is (631) 376-3000.

Dr. Tamesis' primary practice is Good Samaritan University Hospital in West Islip, New York, part of Diocese of Rockville Centre. Dr. Tamesis is also affiliated with St. Francis Hospital & Heart Center. The medical group on file is Cardiac Interventional Group. Dmand AI also links Dr. Tamesis to 1 more hospital, named with a free account.

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

Surgery is Dr. Tamesis' primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Tamesis is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Tamesis' licenses on file in 2 states: Pennsylvania and New York.

Dmand AI lists abdominal adhesion surgery, acute gallbladder or bile duct inflammation, appendectomy, colon removal, esophagus, stomach, or upper small intestine surgery, gallbladder removal, gastrointestinal obstruction and groin hernia surgery among the conditions Dr. Tamesis treats.

CMS data shows 297 Medicare services from Dr. Tamesis across 5 procedure codes in 2024, for 171 Medicare patients. Medicare paid $30,269 for them.

CMS counts 171 Medicare patients who saw Dr. Tamesis in 2024. The largest group is 75 to 84, with 71 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 18% are also on Medicaid. Their average risk score is 2.19, 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. Tamesis' median patient age at 71, with 59% women.

In 2024, Dr. Tamesis wrote 31 Medicare Part D claims for 18 patients. 100% of them were for generic drugs. They cover 5 drugs, with $1,913 in total drug cost. In 2021, CMS named 59 claims across 4 drugs.

Dr. Tamesis accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Tamesis as offering telehealth. CMS counts 34 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Tamesis, more than 57% of the clinicians it reports for that procedure.

Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)

Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)

Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)

Dmand AI links 3 papers to Dr. Tamesis, published from 2022 to 2023. Dr. Tamesis' most frequent co-authors are Shahin Ayazi, MD, Yoshihiro Komatsu, MD and Margaret Lynn Riccardi, DO.

CMS Open Payments shows 36 general payments to Dr. Tamesis from 12 drug and device companies from 2021 to 2025. Food and beverage make up the largest share, 59% of the total. Pinnacle Biologics, Inc paid the most, $1,485.

Dr. Tamesis graduated from Far Eastern University Nicanor Reyes Medical Foundation in 2012.

Dr. Tamesis is in network with 18 carriers, including Aetna, Highmark and United Healthcare. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.