Dr. Daniel Kiden Nishijima, MD

Dr. Nishijima practices at UC Davis Medical Center in Sacramento, California, part of University of California Health.

Dr. Nishijima's NPI, 1700084613, was assigned on July 3, 2007. Dr. Nishijima graduated from Creighton University School of Medicine - Omaha in 2004. Dr. Nishijima holds California license A104004.

Dr. Nishijima's primary practice is UC Davis Medical Center, at 2315 Stockton Boulevard, Sacramento, CA 95817 in Sacramento County. The practice phone is (916) 734-2011.

Dr. Nishijima's primary practice is UC Davis Medical Center in Sacramento, California, part of University of California Health. The medical group on file is UC Davis Medical Group. Dmand AI also links Dr. Nishijima to 2 more 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. Nishijima practices, 3 sites in all. Vendor and product names are available with a free account.

Emergency medicine is Dr. Nishijima's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Nishijima is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. Nishijima's licenses on file in 2 states: California and New York.

CMS data shows 337 Medicare services from Dr. Nishijima across 6 procedure codes in 2024, for 337 Medicare patients. Medicare paid $28,016 for them.

CMS counts 337 Medicare patients who saw Dr. Nishijima in 2024. The largest group is 65 to 74, with 147 patients. 72% of them have high blood pressure, and 67% have high cholesterol. 39% are also on Medicaid. Their average risk score is 1.92, 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. Nishijima's median patient age at 40, with 59% women.

In 2024, Dr. Nishijima wrote 198 Medicare Part D claims for 165 patients. 63% of them were for generic drugs. CMS names the drug for 70 of them, across 3 drugs with 11 or more claims each, at $1,885 in total drug cost. In 2023, CMS named 132 claims across 3 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 90 out of 100 for Dr. Nishijima for performance year 2024, reported as part of a group. Dr. Nishijima accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Nishijima as offering telehealth.

Dmand AI links 136 papers to Dr. Nishijima, published from 2005 to 2025. 2019 was the busiest year, with 17. The most frequent topics are Emergency Service, Hospital, Tomography, X-Ray Computed and Syncope. Dr. Nishijima has published most often in Acad Emerg Med. Dr. Nishijima's most frequent co-authors are Deborah Baker Diercks, MD, James F. Holmes, MD, MPH and Nathan Kuppermann, MD, MPH.

Dmand AI links Dr. Nishijima to 7 clinical trials, 3 of them phase 3 studies. 3 are still active or recruiting. Conditions studied include Syncope, Unconsciousness and Accidental Injuries. Daniel Nishijima, MD, MAS sponsors the most, 2.

CMS Open Payments shows 42 general payments to Dr. Nishijima from 4 drug and device companies from 2016 to 2023. Consulting fees make up the largest share, 84% of the total. Pfizer Inc. paid the most, $35,091. It also lists 18 research payments totaling $1,808 in 2023.

Dr. Nishijima graduated from Creighton University School of Medicine - Omaha in 2004.

Dr. Nishijima is in network with 4 carriers, including United Healthcare, Blue Cross and Blue Shield of Kansas City and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.