Dr. Patrick Farrell Hammen, MD

Dr. Hammen practices at Wellstar Vinings Health Park in Smyrna, Georgia.

Dr. Hammen's NPI, 1164461505, was assigned on June 4, 2006. Dr. Hammen graduated from Mercer University School of Medicine in 1992. Dr. Hammen holds Georgia license 043383.

Dr. Hammen's primary practice is Wellstar Vinings Health Park, at 4441 Atlanta Road, Se, Smyrna, GA 30080. The practice phone is (470) 732-4729.

Dr. Hammen's primary practice is Wellstar Vinings Health Park in Smyrna, Georgia. Dr. Hammen is also affiliated with Wellstar Cobb Medical Center. The medical group on file is Wellstar Medical Group. Dmand AI also links Dr. Hammen to 1 more hospital, 1 breast imaging center, 1 group practice or clinic and 1 medical group, each named with a free account. Dr. Hammen's employer is on file too: a surgery center (asc).

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hammen practices, 5 sites in all. Vendor and product names are available with a free account.

Colon and rectal surgery is Dr. Hammen's primary specialty in the NPI Registry, under taxonomy code 208C00000X. Dr. Hammen is licensed in Georgia.

CMS data shows 151 Medicare services from Dr. Hammen across 6 procedure codes in 2024, for 120 Medicare patients. Medicare paid $21,683 for them.

CMS counts 120 Medicare patients who saw Dr. Hammen in 2024. The largest group is 65 to 74, with 67 patients. 75% of them have high blood pressure, and 73% have high cholesterol. 17% are also on Medicaid. Their average risk score is 1.49, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Hammen's median patient age at 67, with 50% women.

In 2024, Dr. Hammen wrote 253 Medicare Part D claims for 161 patients. 89% of them were for generic drugs. CMS names the drug for 189 of them, across 5 drugs with 11 or more claims each, at $3,445 in total drug cost. In 2023, CMS named 127 claims across 6 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 94 out of 100 for Dr. Hammen for performance year 2024, reported through an alternative payment model (APM). Dr. Hammen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 26 procedures of colonoscopy by Dr. Hammen, more than 51% of the clinicians it reports for that procedure.

Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)

Dmand AI links 1 paper to Dr. Hammen.

CMS Open Payments shows 54 general payments to Dr. Hammen from 20 drug and device companies from 2016 to 2025. Education make up the largest share, 77% of the total. Intuitive Surgical, Inc. paid the most, $9,365.

Dr. Hammen graduated from Mercer University School of Medicine in 1992.