Dr. Christopher David Stephen, MD

Dr. Stephen practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.

Dr. Stephen's NPI, 1124347448, was assigned on May 26, 2010. Dr. Stephen holds Massachusetts license 258292.

Dr. Stephen's primary practice is Massachusetts General Hospital, at 55 Fruit Street, Boston, MA 02114 in Suffolk County. The practice phone is (617) 726-2000.

Dr. Stephen's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. Stephen is also affiliated with Brigham and Women's Hospital. The medical group on file is Massachusetts General Physicians Organization (MGPO). Dmand AI also links Dr. Stephen to 1 more hospital, 2 medical groups and 1 community health center, each named with a free account.

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

Neurology is Dr. Stephen's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Stephen is licensed in Massachusetts.

CMS data shows 864 Medicare services from Dr. Stephen across 2 procedure codes in 2024, for 77 Medicare patients. Medicare paid $34,807 for them.

CMS counts 77 Medicare patients who saw Dr. Stephen in 2024. The largest group is 65 to 74, with 33 patients. 73% of them have high cholesterol, and 61% have high blood pressure. Their average risk score is 1.28, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Stephen's median patient age at 74, with 48% women.

In 2024, Dr. Stephen wrote 372 Medicare Part D claims for 74 patients. 96% of them were for generic drugs. CMS names the drug for 306 of them, across 6 drugs with 11 or more claims each, at $25,572 in total drug cost. In 2023, CMS named 302 claims across 7 drugs.

Dr. Stephen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Dmand AI links 66 papers to Dr. Stephen, published from 2014 to 2025. 2021 was the busiest year, with 9. The most frequent topics are Conversion Disorder, Disease Progression and Gangliosidoses, GM2. Dr. Stephen has published most often in Front Neurol. Dr. Stephen's most frequent co-authors are Jeremy D. Schmahmann, MD, Anoopum Satyawan Gupta, MD, PhD and Nutan Sharma, MD, PhD.

CMS Open Payments shows 6 general payments to Dr. Stephen from 3 drug and device companies from 2020 to 2025. Consulting fees make up the largest share, 87% of the total. Sunovion Pharmaceuticals Inc. paid the most, $5,925.