Dr. Justin Seth Holtzman, MD

Dr. Holtzman practices at Holtzman Medical Group in Newton, Massachusetts.

Dr. Holtzman's NPI, 1669769501, was assigned on June 29, 2011. Dr. Holtzman holds Massachusetts license 257451.

Dr. Holtzman's primary practice is Holtzman Medical Group, at 56 Waverley Ave, Newton, MA 02458 in Middlesex County. The practice phone is (781) 770-4064.

Dr. Holtzman's primary practice is Holtzman Medical Group in Newton, Massachusetts. Dr. Holtzman is also affiliated with Brigham and Women's Hospital. The medical group on file is Holtzman Medical Group. Dmand AI also links Dr. Holtzman to 5 more hospitals, 8 medical groups, 4 group practices and clinics and 1 physician office, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Holtzman practices, 11 sites in all. Vendor and product names are available with a free account.

Internal medicine is Dr. Holtzman's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Holtzman's licenses on file in 2 states: Massachusetts and New York.

CMS data shows 1,293 Medicare services from Dr. Holtzman across 17 procedure codes in 2024, for 491 Medicare patients. Medicare paid $101,602 for them.

CMS counts 491 Medicare patients who saw Dr. Holtzman in 2024. The largest group is 65 to 74, with 172 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 32% are also on Medicaid. Their average risk score is 1.83, 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. Holtzman's median patient age at 35, with 44% women.

In 2024, Dr. Holtzman wrote 1,602 Medicare Part D claims for 234 patients. 90% of them were for generic drugs. CMS names the drug for 1,086 of them, across 39 drugs with 11 or more claims each, at $54,471 in total drug cost. In 2023, CMS named 846 claims across 33 drugs.

Dr. Holtzman accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Holtzman as offering telehealth.

CMS Open Payments shows 273 general payments to Dr. Holtzman from 42 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 54% of the total. Pfizer Inc. paid the most, $5,872.