Dr. Adrian On-Ning Ma, MD

Dr. Ma practices at Regional Medical Center in San Jose, California, part of County of Santa Clara, CA.

Dr. Ma's NPI, 1952305971, was assigned on June 8, 2005. Dr. Ma graduated from University of New South Wales Faculty of Medicine in 1984. Dr. Ma's California license number on file is A45522.

Dr. Ma's primary practice is Regional Medical Center, at 225 N Jackson Avenue, San Jose, CA 95116 in Santa Clara County. The practice phone is (408) 259-5000.

Dr. Ma's primary practice is Regional Medical Center in San Jose, California, part of County of Santa Clara, CA. Dr. Ma is also affiliated with Santa Clara Valley Medical Center. The medical group on file is Hill Vascular & Vein Center. Dmand AI also links Dr. Ma to 1 more hospital, 2 group practices and clinics and 1 medical group, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ma practices, 5 sites in all. Vendor and product names are available with a free account.

Cardiovascular disease is Dr. Ma's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Ma is board certified in cardiovascular disease by the American Board of Internal Medicine. Dr. Ma has a license on file in California.

Dmand AI lists aneurysm, angioplasty, aortic atherosclerois, atrial fibrillation and flutter, cardiac catheterization, cardiomyopathy, cerebrovascular disease and chronic hypertension among the conditions Dr. Ma treats.

CMS data shows 6,122 Medicare services from Dr. Ma across 20 procedure codes in 2024, for 568 Medicare patients. Medicare paid $978,852 for them.

CMS counts 568 Medicare patients who saw Dr. Ma in 2024. The largest group is 65 to 74, with 206 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 58% are also on Medicaid. Their average risk score is 1.71, 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. Ma's median patient age at 74, with 52% women.

In 2024, Dr. Ma wrote 6,107 Medicare Part D claims for 798 patients. 75% of them were for generic drugs. CMS names the drug for 5,896 of them, across 68 drugs with 11 or more claims each, at $1,446,019 in total drug cost. In 2023, CMS named 5,761 claims across 62 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Ma for performance year 2024, reported individually. CMS counts 16 procedures of pacemaker insertion or repair by Dr. Ma, more than 67% of the clinicians it reports for that procedure.

Dmand AI links 9 papers to Dr. Ma, published from 2014 to 2022. 2020 was the busiest year, with 2. The most frequent topics are Blood Pressure, Hypertension and Kidney. Dr. Ma's most frequent co-authors are Janice I. Lea, MD, Raymond R. Townsend, MD and James W. Choi, MD.

Dmand AI links Dr. Ma to 2 clinical trials. 1 is still active or recruiting. Conditions studied include Hypertension and Vascular Diseases. Medtronic Vascular sponsors the most, 2.

CMS Open Payments shows 128 general payments to Dr. Ma from 22 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 66% of the total. Medtronic Vascular, Inc. paid the most, $2,843.

Dr. Ma graduated from University of New South Wales Faculty of Medicine in 1984.

Dr. Ma is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.