Dr. Gregory Andonian, MD

Dr. Andonian practices at Henry Mayo Newhall Hospital in Valencia, California, part of Henry Mayo Newhall Hospital.

Dr. Andonian's NPI, 1942648118, was assigned on June 11, 2013. Dr. Andonian graduated from American University of the Caribbean School of Medicine in 2010. Dr. Andonian's California license number on file is A140710.

Dr. Andonian's primary practice is Henry Mayo Newhall Hospital, at 23845 McBean Pkwy, Valencia, CA 91355 in Los Angeles County. The practice phone is (661) 253-8000.

Dr. Andonian's primary practice is Henry Mayo Newhall Hospital in Valencia, California, part of Henry Mayo Newhall Hospital. The medical group on file is Facey Medical Group. Dmand AI also links Dr. Andonian to 2 more medical groups, 1 group practice or clinic and 1 ambulatory surgery center, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Andonian practices, 3 sites in all. Vendor and product names are available with a free account.

Family medicine is Dr. Andonian's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Andonian is board certified in family medicine by the American Board of Family Medicine. Dmand AI has Dr. Andonian's licenses on file in 2 states: California and Indiana.

Dmand AI lists cardiac arrhythmia, cellulitis, chest pain, chronic anemia, chronic diabetes, chronic hypertension, congestive heart failure and electrolyte disorders among the conditions Dr. Andonian treats.

CMS data shows 462 Medicare services from Dr. Andonian across 5 procedure codes in 2024, for 122 Medicare patients. Medicare paid $42,244 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 122 Medicare patients who saw Dr. Andonian in 2024. The largest group is 75 to 84, with 57 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 53% are also on Medicaid. Their average risk score is 2.61, 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. Andonian's median patient age at 72, with 56% women.

In 2024, Dr. Andonian wrote 204 Medicare Part D claims for 100 patients. 86% of them were for generic drugs. CMS names the drug for 50 of them, across 4 drugs with 11 or more claims each, at $5,543 in total drug cost. In 2023, CMS named 22 claims across 2 drugs.

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

CMS Open Payments shows 9 general payments to Dr. Andonian from 8 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Novartis Pharmaceuticals Corporation paid the most, $134.

Dr. Andonian graduated from American University of the Caribbean School of Medicine in 2010.

Dr. Andonian is in network with 6 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.