Dr. Jim Amerian, MD

Dr. Amerian practices at Dignity Health - Northridge Hospital Medical Center in Northridge, California, part of CommonSpirit Health.

Dr. Amerian's NPI, 1366400194, was assigned on May 2, 2006. Dr. Amerian graduated from New York Medical College in 1980. Dr. Amerian holds California license G44918.

Dr. Amerian's primary practice is Dignity Health - Northridge Hospital Medical Center, at 18300 Roscoe Blvd, Northridge, CA 91325 in Los Angeles County. The practice phone is (818) 885-8500.

Dr. Amerian's primary practice is Dignity Health - Northridge Hospital Medical Center in Northridge, California, part of CommonSpirit Health. The medical group on file is United Medical Doctors. Dmand AI also links Dr. Amerian to 1 more hospital and 1 group practice or clinic, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Amerian practices, 3 sites in all. Vendor and product names are available with a free account.

Gastroenterology is Dr. Amerian's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Amerian is board certified in gastroenterology by the American Board of Internal Medicine. Dr. Amerian is licensed in California.

Dmand AI lists acid reflux, chronic inflammatory bowel disease (IBD), colonoscopy, gastroenteritis, gastrointestinal bleeding, intestinal diverticulosis, irritable bowel syndrome (IBS) and upper GI endoscopy among the conditions Dr. Amerian treats.

CMS data shows 323 Medicare services from Dr. Amerian across 5 procedure codes in 2024, for 139 Medicare patients. Medicare paid $35,638 for them.

CMS counts 139 Medicare patients who saw Dr. Amerian in 2024. The largest group is 75 to 84, with 61 patients. 75% of them have high cholesterol, and 70% have high blood pressure. Their average risk score is 1.21, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Amerian's median patient age at 71, with 48% women.

In 2024, Dr. Amerian wrote 209 Medicare Part D claims for 84 patients. 84% of them were for generic drugs. CMS names the drug for 111 of them, across 3 drugs with 11 or more claims each, at $4,985 in total drug cost. In 2023, CMS named 96 claims across 3 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Amerian for performance year 2024, reported as part of a group. Dr. Amerian accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Amerian as offering telehealth. CMS counts 45 procedures of colonoscopy by Dr. Amerian, more than 61% of the clinicians it reports for that procedure.

Dmand AI links 2 papers to Dr. Amerian.

CMS Open Payments shows 121 general payments to Dr. Amerian from 32 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Madrigal Pharmaceuticals paid the most, $328.

Dr. Amerian graduated from New York Medical College in 1980.

Dr. Amerian is in network with 5 carriers, including United Healthcare, Aetna and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.