Dr. John Clark Henegan Jr., MD

Dr. Henegan practices at University of Mississippi Medical Center in Jackson, Mississippi, part of Mississippi Institutions of Higher Learning.

Dr. Henegan's NPI, 1114188471, was assigned on June 19, 2008. Dr. Henegan graduated from University of Mississippi School of Medicine in 2008. Dr. Henegan holds Mississippi license 22684.

Dr. Henegan's primary practice is University of Mississippi Medical Center, at 2500 N State St, Jackson, MS 39216 in Hinds County. The practice phone is (601) 984-4100.

Dr. Henegan's primary practice is University of Mississippi Medical Center in Jackson, Mississippi, part of Mississippi Institutions of Higher Learning. Dr. Henegan is also affiliated with Mississippi Baptist Medical Center. The medical group on file is University of Mississippi Medical Center. Dmand AI also links Dr. Henegan to 2 more hospitals, 3 home health agencies and 1 behavioral health center, each named with a free account. Dr. Henegan's employer is on file too: a hospital.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Henegan practices, 8 sites in all. Vendor and product names are available with a free account.

Hematology and oncology is Dr. Henegan's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Henegan is licensed in Mississippi.

CMS data shows 1,629 Medicare services from Dr. Henegan across 16 procedure codes in 2024, for 313 Medicare patients. Medicare paid $84,107 for them.

CMS counts 313 Medicare patients who saw Dr. Henegan in 2024. The largest group is 65 to 74, with 141 patients. 75% of them have cancer, and 75% have high blood pressure. 18% are also on Medicaid. Their average risk score is 2.12, 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. Henegan's median patient age at 67, with 25% women.

In 2024, Dr. Henegan wrote 2,911 Medicare Part D claims for 294 patients. 88% of them were for generic drugs. CMS names the drug for 2,453 of them, across 54 drugs with 11 or more claims each, at $3,285,917 in total drug cost. In 2023, CMS named 2,403 claims across 56 drugs.

Dr. Henegan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Henegan as offering telehealth.

Dmand AI links 6 papers to Dr. Henegan, published from 2017 to 2019. 2017 was the busiest year, with 2. The most frequent topics are Prostatic Neoplasms and Prostatic Neoplasms, Castration-Resistant. Dr. Henegan's most frequent co-authors are Srinivasan Vijayakumar, MD, Vani Vijayakumar, MD and Brian Christopher Allen, MD.

CMS Open Payments shows 1,174 general payments to Dr. Henegan from 94 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 54% of the total. Pfizer Inc. paid the most, $9,706.

Dr. Henegan graduated from University of Mississippi School of Medicine in 2008.