Dr. Joshua Robert Olstein, MD

Dr. Olstein practices at Gastro Assoc of Rockland in New City, New York.

Dr. Olstein's NPI, 1346446580, was assigned on June 25, 2007. Dr. Olstein graduated from University of Pittsburgh School of Medicine in 2004. Dr. Olstein holds New York license 239169.

Dr. Olstein's primary practice is Gastro Assoc of Rockland, at 500 New Hempstead Rd, New City, NY 10956 in Rockland County. The practice phone is (845) 362-3200.

Dr. Olstein's primary practice is Gastro Assoc of Rockland in New City, New York. Dr. Olstein is also affiliated with Montefiore Nyack Hospital. The medical group on file is Gastrointestinal Care of Long Island. Dmand AI also links Dr. Olstein to 2 more hospitals, 4 group practices and clinics and 3 medical groups, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Olstein practices, 7 sites in all. Vendor and product names are available with a free account.

Gastroenterology is Dr. Olstein's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Olstein is licensed in New York.

CMS data shows 668 Medicare services from Dr. Olstein across 13 procedure codes in 2024, for 434 Medicare patients. Medicare paid $83,541 for them.

CMS counts 434 Medicare patients who saw Dr. Olstein in 2024. The largest group is 75 to 84, with 178 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 27% are also on Medicaid. Their average risk score is 1.97, 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. Olstein's median patient age at 57, with 52% women.

In 2024, Dr. Olstein wrote 1,313 Medicare Part D claims for 348 patients. 82% of them were for generic drugs. CMS names the drug for 1,143 of them, across 22 drugs with 11 or more claims each, at $208,058 in total drug cost. In 2023, CMS named 1,018 claims across 20 drugs.

Dr. Olstein accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Olstein as offering telehealth. CMS counts 118 procedures of colonoscopy by Dr. Olstein, more than 83% of the clinicians it reports for that procedure.

CMS Open Payments shows 279 general payments to Dr. Olstein from 33 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Gilead Sciences, Inc. paid the most, $1,207.

Dr. Olstein graduated from University of Pittsburgh School of Medicine in 2004.