Dr. Hiroyuki Aihara, MD

Dr. Aihara practices at Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham.

Dr. Aihara's NPI, 1619395795, was assigned on April 4, 2014. Dr. Aihara graduated from Other in 1998. Dr. Aihara's Massachusetts license number on file is 260891.

Dr. Aihara's primary practice is Brigham and Women's Hospital, at 75 Francis Street, Boston, MA 02115 in Suffolk County. The practice phone is (617) 732-5500.

Dr. Aihara's primary practice is Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. Aihara is also affiliated with Dana-Farber Cancer Institute. The medical group on file is Brigham and Women's Hospital. Dmand AI also links Dr. Aihara to 1 more hospital and 1 hospital outpatient department, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Aihara practices, 4 sites in all. Vendor and product names are available with a free account.

Gastroenterology is Dr. Aihara's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Aihara has a license on file in Massachusetts.

Dmand AI lists colonoscopy and upper GI endoscopy among the conditions Dr. Aihara treats.

CMS data shows 612 Medicare services from Dr. Aihara across 10 procedure codes in 2024, for 391 Medicare patients. Medicare paid $79,840 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 391 Medicare patients who saw Dr. Aihara in 2024. The largest group is 65 to 74, with 199 patients. 72% of them have high cholesterol, and 70% have high blood pressure. 18% are also on Medicaid. Their average risk score is 1.42, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Aihara's median patient age at 72, with 58% women.

In 2024, Dr. Aihara wrote 107 Medicare Part D claims for 94 patients. 92% of them were for generic drugs. CMS names the drug for 81 of them, across 2 drugs with 11 or more claims each, at $1,057 in total drug cost. In 2023, CMS named 82 claims across 2 drugs.

Dr. Aihara accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 165 procedures of colonoscopy by Dr. Aihara, more than 90% of the clinicians it reports for that procedure.

Dmand AI links 168 papers to Dr. Aihara, published from 2009 to 2025. 2020 was the busiest year, with 20. The most frequent topics are Endoscopic Mucosal Resection, Colonoscopy and Colorectal Neoplasms. Dr. Aihara has published most often in Gastrointest Endosc. Dr. Aihara's most frequent co-authors are Christopher C. Thompson, MD, MS, Peter V. Draganov, MD and Phillip S. Ge, MD.

CMS Open Payments shows 1,345 general payments to Dr. Aihara from 22 drug and device companies from 2016 to 2025. Education make up the largest share, 44% of the total. Olympus Corporation of the Americas paid the most, $608,207.

Dmand AI lists 2 awards for Dr. Aihara, most recently Top Reviewer Award in 2020. Dr. Aihara serves on Training Committee American Society for Gastrointestinal Endoscopy.

Dr. Aihara graduated from Other in 1998. Dr. Aihara is a member of ACG and ASGE.

Dr. Aihara is in network with 18 carriers, including Aetna, Excellus BlueCross BlueShield and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.