Dr. Lionel S. D'Souza, MD

Dr. D'Souza practices at The Mount Sinai Hospital in New York, New York, part of Mount Sinai Health System.

Dr. D'Souza's NPI, 1679733182, was assigned on June 10, 2008. Dr. D'Souza graduated from Kasturba Med College Mangalore in 2005. Dr. D'Souza holds New York license 272023.

Dr. D'Souza's primary practice is The Mount Sinai Hospital, at One Gustave L Levy Place, New York, NY 10029 in New York County. The practice phone is (212) 241-7981. Dr. D'Souza also practices at The Mount Sinai Hospital, 1 Gustave L Levy Pl, New York, NY 10029.

Dr. D'Souza's primary practice is The Mount Sinai Hospital in New York, New York, part of Mount Sinai Health System. Dr. D'Souza is also affiliated with Mount Sinai West. The medical group on file is Mount Sinai Institute for Liver Medicine.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. D'Souza practices, 2 sites in all. Vendor and product names are available with a free account.

Gastroenterology is Dr. D'Souza's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. D'Souza is board certified in gastroenterology by the American Board of Internal Medicine. Dr. D'Souza is licensed in New York.

Dmand AI lists acid reflux, acute stomach ulcer, bile duct problems, cirrhosis of the liver, colonoscopy, esophagus, stomach, or upper small intestine surgery, gastrointestinal bleeding and gastrointestinal infection among the conditions Dr. D'Souza treats.

CMS data shows 974 Medicare services from Dr. D'Souza across 30 procedure codes in 2024, for 531 Medicare patients. Medicare paid $136,291 for them.

CMS counts 531 Medicare patients who saw Dr. D'Souza in 2024. The largest group is 75 to 84, with 238 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 16% are also on Medicaid. Their average risk score is 1.70, 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. D'Souza's median patient age at 63, with 51% women.

In 2024, Dr. D'Souza wrote 398 Medicare Part D claims for 156 patients. 83% of them were for generic drugs. CMS names the drug for 329 of them, across 10 drugs with 11 or more claims each, at $55,408 in total drug cost. In 2023, CMS named 282 claims across 8 drugs.

Dr. D'Souza accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. D'Souza as offering telehealth. CMS counts 226 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. D'Souza, more than 92% of the clinicians it reports for that procedure.

Dmand AI links 35 papers to Dr. D'Souza, published from 2010 to 2025. 2019 was the busiest year, with 8. The most frequent topics are Endosonography, Biopsy and Endoscopic Mucosal Resection. Dr. D'Souza has published most often in Endoscopy. Dr. D'Souza's most frequent co-authors are David Leslie Carr-Locke, MD, Mouen A. Khashab, MD and Nikhil A. Kumta, MD, MS.

CMS Open Payments shows 372 general payments to Dr. D'Souza from 42 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 51% of the total. Boston Scientific Corporation paid the most, $38,777.

Dr. D'Souza graduated from Kasturba Med College Mangalore in 2005.

Dr. D'Souza is in network with 13 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.