Dr. David Farrell Armstrong, DO

Dr. Armstrong practices at Hmhmg Specialty Care in Glen Ridge, New Jersey.

Dr. Armstrong's NPI, 1134353964, was assigned on May 7, 2009. Dr. Armstrong graduated from New York College of Osteo Medicine of New York Institute of Technology in 2009. Dr. Armstrong holds New Jersey license 25MB10360600.

Dr. Armstrong's primary practice is Hmhmg Specialty Care, at 1 Bay St, Glen Ridge, NJ 07028 in Essex County. The practice phone is (732) 807-0800.

Dr. Armstrong's primary practice is Hmhmg Specialty Care in Glen Ridge, New Jersey. Dr. Armstrong is also affiliated with Hackensack University Medical Center. The medical group on file is Hackensack Meridian Medical Group. Dmand AI also links Dr. Armstrong to 4 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. Armstrong practices, 9 sites in all. Vendor and product names are available with a free account.

Cardiovascular disease is Dr. Armstrong's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dmand AI has Dr. Armstrong's licenses on file in 2 states: New Jersey and New York.

CMS data shows 2,538 Medicare services from Dr. Armstrong across 16 procedure codes in 2024, for 1,194 Medicare patients. Medicare paid $143,220 for them.

CMS counts 1,194 Medicare patients who saw Dr. Armstrong in 2024. The largest group is 65 to 74, with 428 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 14% are also on Medicaid. Their average risk score is 1.87, 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. Armstrong's median patient age at 67, with 51% women.

In 2024, Dr. Armstrong wrote 2,510 Medicare Part D claims for 347 patients. 83% of them were for generic drugs. CMS names the drug for 2,312 of them, across 34 drugs with 11 or more claims each, at $450,371 in total drug cost. In 2023, CMS named 1,853 claims across 31 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 96 out of 100 for Dr. Armstrong for performance year 2024, reported through an alternative payment model (APM). Dr. Armstrong accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Armstrong as offering telehealth.

CMS Open Payments shows 46 general payments to Dr. Armstrong from 16 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 92% of the total. Novartis Pharmaceuticals Corporation paid the most, $285.

Dr. Armstrong graduated from New York College of Osteo Medicine of New York Institute of Technology in 2009.