Dr. Maria Czarins Onoya, MD

Dr. Onoya practices at Athens-Limestone Hospital in Athens, Alabama, part of Huntsville Hospital Health System.

Dr. Onoya's NPI, 1801237946, was assigned on July 16, 2013. Dr. Onoya holds Alabama license 35353.

Dr. Onoya's primary practice is Athens-Limestone Hospital, at 700 West Market Street, Athens, AL 35611 in Limestone County. The practice phone is (256) 233-9292.

Dr. Onoya's primary practice is Athens-Limestone Hospital in Athens, Alabama, part of Huntsville Hospital Health System. The medical group on file is Athens-Limestone Hospitalist. Dmand AI also links Dr. Onoya to 2 more 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. Onoya practices, 3 sites in all. Vendor and product names are available with a free account.

Internal medicine is Dr. Onoya's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Onoya is licensed in Alabama.

CMS data shows 668 Medicare services from Dr. Onoya across 7 procedure codes in 2024, for 238 Medicare patients. Medicare paid $55,615 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 238 Medicare patients who saw Dr. Onoya in 2024. The largest group is 75 to 84, with 92 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 14% are also on Medicaid. Their average risk score is 2.07, 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. Onoya's median patient age at 73, with 57% women.

In 2024, Dr. Onoya wrote 3,731 Medicare Part D claims for 523 patients. 86% of them were for generic drugs. CMS names the drug for 3,152 of them, across 80 drugs with 11 or more claims each, at $271,925 in total drug cost. In 2023, CMS named 9,052 claims across 136 drugs.

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

Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)

CMS Open Payments shows 315 general payments to Dr. Onoya from 29 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 90% of the total. AstraZeneca Pharmaceuticals LP paid the most, $2,171.