Dr. Diane Davis Van Gerwen, MD

Dr. Van Gerwen practices at Ochsner Medical Center - New Orleans in New Orleans, Louisiana, part of Ochsner Health System.

Dr. Van Gerwen's NPI, 1003234642, was assigned on April 1, 2014. Dr. Van Gerwen graduated from University of Iowa, RJ & L Carver College of Medicine in 2014. Dr. Van Gerwen holds Louisiana license 305924.

Dr. Van Gerwen's primary practice is Ochsner Medical Center - New Orleans, at 1516 Jefferson Hwy, New Orleans, LA 70121 in Jefferson Parish. The practice phone is (504) 842-3000.

Dr. Van Gerwen's primary practice is Ochsner Medical Center - New Orleans in New Orleans, Louisiana, part of Ochsner Health System. The medical group on file is Ochsner Health. Dmand AI also links Dr. Van Gerwen to 1 more home health agency and 1 medical group, each named with a free account.

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

Hospitalist is Dr. Van Gerwen's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Van Gerwen is board certified in internal medicine by the American Board of Internal Medicine. Dr. Van Gerwen is licensed in Louisiana.

CMS data shows 280 Medicare services from Dr. Van Gerwen across 5 procedure codes in 2024, for 109 Medicare patients. Medicare paid $28,210 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 109 Medicare patients who saw Dr. Van Gerwen in 2024. The largest group is 65 to 74, with 32 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 54% are also on Medicaid. Their average risk score is 2.45, 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. Van Gerwen's median patient age at 73, with 55% women.

In 2024, Dr. Van Gerwen wrote 584 Medicare Part D claims for 200 patients. 74% of them were for generic drugs. CMS names the drug for 307 of them, across 13 drugs with 11 or more claims each, at $72,496 in total drug cost. In 2023, CMS named 302 claims across 14 drugs.

Dr. Van Gerwen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

CMS Open Payments shows 19 general payments to Dr. Van Gerwen from 6 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Inari Medical, Inc. paid the most, $499.

Dr. Van Gerwen graduated from University of Iowa, RJ & L Carver College of Medicine in 2014.