Dr. Mark J. Fisher, MD

Dr. Fisher practices at UCI Health - Orange in Orange, California, part of UC Irvine.

Dr. Fisher's NPI, 1225132814, was assigned on September 12, 2006. Dr. Fisher graduated from University Of Cincinnati College Of Medicine in 1975. Dr. Fisher holds California license G34527.

Dr. Fisher's primary practice is UCI Health - Orange, at 101 City Drive South, Orange, CA 92868 in Orange County. The practice phone is (714) 456-7890.

Dr. Fisher's primary practice is UCI Health - Orange in Orange, California, part of UC Irvine. The medical group on file is UCI Health Physicians. Dmand AI also links Dr. Fisher to 1 more group practice or clinic, named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fisher practices, 2 sites in all. Vendor and product names are available with a free account.

Vascular neurology is Dr. Fisher's primary specialty in the NPI Registry, under taxonomy code 2084V0102X. Dr. Fisher is board certified in neurology by the American Board of Psychiatry and Neurology. Dr. Fisher is licensed in California.

Dmand AI lists acute mini-stroke (TIA) among the conditions Dr. Fisher treats.

CMS data shows 15 Medicare services from Dr. Fisher across 1 procedure code in 2024, all of them office visits, for 23 Medicare patients. Medicare paid $1,306 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 23 Medicare patients who saw Dr. Fisher in 2024. The largest group is 75 to 84, with 11 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.88, 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. Fisher's median patient age at 67, with 53% women.

In 2024, Dr. Fisher wrote 47 Medicare Part D claims for 12 patients. 100% of them were for generic drugs. CMS names the drug for 17 of them, across 1 drug with 11 or more claims each, at $163 in total drug cost. In 2023, CMS named 28 claims across 2 drugs.

Dr. Fisher accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Fisher as offering telehealth.

Dmand AI links 99 papers to Dr. Fisher, published from 2004 to 2025. 2021 was the busiest year, with 8. The most frequent topics are Brain, Cerebral Hemorrhage and Stroke. Dr. Fisher has published most often in Stroke. Dr. Fisher's most frequent co-authors are Wei Ling Lau, MD, Steven Schreiber, MD and David Robert Floriolli, MD.

CMS Open Payments shows 2 general payments to Dr. Fisher from 2 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 94% of the total. Medtronic USA, Inc. paid the most, $391.

Dmand AI lists 1 award for Dr. Fisher.

Dr. Fisher graduated from University Of Cincinnati College Of Medicine in 1975. Dr. Fisher is a member of AAN.

Dr. Fisher is in network with 14 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.