Dr. Matthew D. Armstrong, MD

Dr. Armstrong practices at Warren Clinic Inc in Tulsa, Oklahoma.

Dr. Armstrong's NPI, 1457363236, was assigned on August 12, 2006. Dr. Armstrong graduated from Mayo Clinic Alix School of Medicine - Rochester in 2005. Dr. Armstrong holds Oklahoma license 28451.

Dr. Armstrong's primary practice is Warren Clinic Inc, at 6600 S Yale E Ave, Tulsa, OK 74136 in Tulsa County. The practice phone is (918) 488-6001.

Dr. Armstrong's primary practice is Warren Clinic Inc in Tulsa, Oklahoma. Dr. Armstrong is also affiliated with Saint Francis Hospital. The medical group on file is Warren Clinic. Dmand AI also links Dr. Armstrong to 4 more hospitals, 3 group practices and clinics and 2 medical groups, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Armstrong practices, 8 sites in all. Vendor and product names are available with a free account.

Hematology and oncology is Dr. Armstrong's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Armstrong is board certified in hematology by the American Board of Internal Medicine. Dmand AI has Dr. Armstrong's licenses on file in 3 states: Oklahoma, Florida and Minnesota.

Dmand AI lists breast cancer, chronic anemia, chronic leukemia, colorectal cancer, fluid and electrolyte imbalances, lung cancer, lymphoma and multiple myeloma among the conditions Dr. Armstrong treats.

CMS data shows 2,470 Medicare services from Dr. Armstrong across 9 procedure codes in 2024, for 491 Medicare patients. Medicare paid $97,893 for them.

CMS counts 491 Medicare patients who saw Dr. Armstrong in 2024. The largest group is 65 to 74, with 218 patients. 75% of them have high blood pressure, and 71% have high cholesterol. 6% are also on Medicaid. Their average risk score is 2.04, 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 73, with 61% women.

In 2024, Dr. Armstrong wrote 3,151 Medicare Part D claims for 449 patients. 83% of them were for generic drugs. CMS names the drug for 2,814 of them, across 63 drugs with 11 or more claims each, at $5,409,421 in total drug cost. In 2023, CMS named 2,403 claims across 55 drugs.

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

Dmand AI links 2 papers to Dr. Armstrong.

CMS Open Payments shows 126 general payments to Dr. Armstrong from 31 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 47% of the total. Pfizer Inc. paid the most, $548.

Dr. Armstrong graduated from Mayo Clinic Alix School of Medicine - Rochester in 2005. Dr. Armstrong is a member of ASCO.

Dr. Armstrong is in network with 13 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.