Dr. Asterios Tsimpas, MD

Dr. Tsimpas practices at Mission Hospital - Unit in Mission Viejo, California.

Dr. Tsimpas' NPI, 1093919946, was assigned on June 13, 2007. Dr. Tsimpas graduated from University of Giessen Faculty of Medicine in 2000. Dr. Tsimpas holds California license A121207.

Dr. Tsimpas' primary practice is Mission Hospital - Unit, at 27700 Medical Center Rd, Mission Viejo, CA 92691 in Orange County. The practice phone is (949) 365-2447.

Dr. Tsimpas' primary practice is Mission Hospital - Unit in Mission Viejo, California. Dr. Tsimpas is also affiliated with Providence Mission Hospital. Dmand AI also links Dr. Tsimpas to 2 more hospitals and 1 physician office, each named with a free account.

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

Neurological surgery is Dr. Tsimpas' primary specialty in the NPI Registry, under taxonomy code 207T00000X. Dr. Tsimpas is board certified in neurological surgery by the American Board of Neurological Surgery. Dmand AI has Dr. Tsimpas' licenses on file in 6 states: California, Florida, Illinois, Indiana, Pennsylvania and New Jersey.

Dmand AI lists craniotomy, lower back pain, neck pain and spine problems and spinal fusion among the conditions Dr. Tsimpas treats.

CMS data shows 632 Medicare services from Dr. Tsimpas across 13 procedure codes in 2024, for 234 Medicare patients. Medicare paid $97,609 for them.

CMS counts 234 Medicare patients who saw Dr. Tsimpas in 2024. The largest group is 75 to 84, with 113 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 18% are also on Medicaid. Their average risk score is 2.00, 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. Tsimpas' median patient age at 71, with 48% women.

In 2024, Dr. Tsimpas wrote 59 Medicare Part D claims for 27 patients. 86% of them were for generic drugs. CMS names the drug for 19 of them, across 1 drug with 11 or more claims each, at $533 in total drug cost. In 2019, CMS named 28 claims across 2 drugs.

Dr. Tsimpas accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 11 procedures of spinal fusion by Dr. Tsimpas, more than 27% of the clinicians it reports for that procedure.

Laminectomy or laminotomy (partial removal of spine bones): 1 to 10 procedures (CMS shows small counts as a range)

Dmand AI links 23 papers to Dr. Tsimpas, published from 2013 to 2021. 2020 was the busiest year, with 5. The most frequent topics are Cerebral Angiography, Embolization, Therapeutic and Intracranial Aneurysm. Dr. Tsimpas has published most often in Clin Neurol Neurosurg. Dr. Tsimpas' most frequent co-authors are Anand V. Germanwala, MD, William Wallace Ashley, MBA, MD, PhD and Aaron S. Dumont, MD.

CMS Open Payments shows 179 general payments to Dr. Tsimpas from 31 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 36% of the total. Medtronic, Inc. paid the most, $19,566.

Dmand AI lists 1 award for Dr. Tsimpas, most recently CMS Stage 1 EHR in 2013.

Dr. Tsimpas graduated from University of Giessen Faculty of Medicine in 2000. Dr. Tsimpas is a member of AANS and CNS.

Dr. Tsimpas is in network with 17 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.