Dr. Nicholas N. Nissen, MD

Dr. Nissen practices at Cedars-Sinai Medical Center in Los Angeles, California, part of Cedars-Sinai Health System.

Dr. Nissen's NPI, 1174507099, was assigned on December 5, 2005. Dr. Nissen graduated from University Of Minnesota Medical School in 1991. Dr. Nissen holds California license G85301.

Dr. Nissen's primary practice is Cedars-Sinai Medical Center, at 8700 Beverly Blvd, Los Angeles, CA 90048 in Los Angeles County. The practice phone is (310) 423-5000.

Dr. Nissen's primary practice is Cedars-Sinai Medical Center in Los Angeles, California, part of Cedars-Sinai Health System. Dr. Nissen is also affiliated with Hoag Hospital Newport Beach. The medical group on file is Cedars-Sinai Medical Center. Dmand AI also links Dr. Nissen to 1 more hospital, 2 home health agencies, 1 group practice or clinic and 1 medical group, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nissen practices, 6 sites in all. Vendor and product names are available with a free account.

Surgery is Dr. Nissen's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Nissen is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Nissen's licenses on file in 3 states: California, Illinois and Pennsylvania.

Dmand AI lists abdominal hernia repair surgery, acute gallbladder or bile duct inflammation, appendectomy, esophagus, stomach, or upper small intestine surgery, gallbladder removal and pancreas or bile duct endoscopy (ERCP) among the conditions Dr. Nissen treats.

CMS data shows 1,466 Medicare services from Dr. Nissen across 15 procedure codes in 2024, for 498 Medicare patients. Medicare paid $177,408 for them.

CMS counts 498 Medicare patients who saw Dr. Nissen in 2024. The largest group is 65 to 74, with 249 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 31% are also on Medicaid. Their average risk score is 2.48, 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. Nissen's median patient age at 72, with 50% women.

In 2024, Dr. Nissen wrote 424 Medicare Part D claims for 101 patients. CMS names the drug for 243 of them, across 7 drugs with 11 or more claims each, at $436,174 in total drug cost. In 2023, CMS named 391 claims across 12 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Nissen for performance year 2024, reported as part of a group. Dr. Nissen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Nissen as offering telehealth.

Dmand AI links 40 papers to Dr. Nissen, published from 2010 to 2025. 2021 was the busiest year, with 6. The most frequent topics are Carcinoma, Hepatocellular, Liver Neoplasms and Biomarkers, Tumor. Dr. Nissen's most frequent co-authors are Andrew Eugene Hendifar, MD, MPH, Richard Tuli, MD, PhD and Amit Singal, MD.

Dmand AI links Dr. Nissen to 5 clinical trials. 1 is still active or recruiting. Conditions studied include Pancreatic Neoplasms and Pancreatic Diseases. Cedars-Sinai Medical Center sponsors the most, 2.

CMS Open Payments shows 89 general payments to Dr. Nissen from 15 drug and device companies from 2016 to 2025. Travel and lodging make up the largest share, 43% of the total. Medical Device Business Services, Inc. paid the most, $9,749. It also lists 1 research payment totaling $1,300 in 2017.

Dmand AI lists 6 awards for Dr. Nissen, most recently America's Top Doctors in 2014.

Dr. Nissen graduated from University Of Minnesota Medical School in 1991. Dr. Nissen is a member of ACS and SLS.

Dr. Nissen is in network with 13 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.