Dr. Riley Aaron Lamb, MD

Dr. Lamb practices at Avera St. Mary's Hospital in Pierre, South Dakota, part of Avera Health.

Dr. Lamb's NPI, 1588815641, was assigned on October 8, 2008. Dr. Lamb holds South Dakota license 8931.

Dr. Lamb's primary practice is Avera St. Mary's Hospital, at 801 E Sioux, Pierre, SD 57501 in Hughes County. The practice phone is (605) 224-3100.

Dr. Lamb's primary practice is Avera St. Mary's Hospital in Pierre, South Dakota, part of Avera Health. Dr. Lamb is also affiliated with Avera McKennan Hospital & University Health Center. The medical group on file is Avera St. Mary's Hospital. Dmand AI also links Dr. Lamb to 1 more hospital, 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. Lamb practices, 4 sites in all. Vendor and product names are available with a free account.

Surgery is Dr. Lamb's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Lamb is licensed in South Dakota.

CMS data shows 352 Medicare services from Dr. Lamb across 8 procedure codes in 2024, for 235 Medicare patients. Medicare paid $32,260 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 235 Medicare patients who saw Dr. Lamb in 2024. The largest group is 65 to 74, with 134 patients. 75% of them have high blood pressure, and 66% have high cholesterol. 10% are also on Medicaid. Their average risk score is 1.21, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Lamb's median patient age at 59, with 52% women.

In 2024, Dr. Lamb wrote 128 Medicare Part D claims for 59 patients. 90% of them were for generic drugs. CMS names the drug for 54 of them, across 2 drugs with 11 or more claims each, at $693 in total drug cost. In 2023, CMS named 104 claims across 5 drugs.

Dr. Lamb accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 39 procedures of colonoscopy by Dr. Lamb, more than 58% of the clinicians it reports for that procedure.

Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)

Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)

Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)

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

CMS Open Payments shows 71 general payments to Dr. Lamb from 20 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $257.