Dr. Thomas Louis Nickolas, MD

Dr. Nickolas practices at Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health.

Dr. Nickolas' NPI, 1558438788, was assigned on November 30, 2006. Dr. Nickolas graduated from University of Pittsburgh School of Medicine in 1998. Dr. Nickolas holds Missouri license 2024049980.

Dr. Nickolas' primary practice is Barnes-Jewish Hospital, at One Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110 in St. Louis City. The practice phone is (314) 747-3000. Dr. Nickolas also practices at Barnes-Jewish Hospital, 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110.

Dr. Nickolas' primary practice is Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health. Dr. Nickolas is also affiliated with Missouri Baptist Medical Center. The medical group on file is WashU Medicine Psychiatry. Dmand AI also links Dr. Nickolas to 3 more hospitals, 2 medical groups 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. Nickolas practices, 6 sites in all. Vendor and product names are available with a free account.

Endocrinology, diabetes and metabolism is Dr. Nickolas' primary specialty in the NPI Registry, under taxonomy code 207RE0101X. Dr. Nickolas is board certified in nephrology by the American Board of Internal Medicine. Dmand AI has Dr. Nickolas' licenses on file in 3 states: Missouri, New York and Pennsylvania.

Dmand AI lists chronic kidney disease, hypercalcemia and parathyroid gland disorder among the conditions Dr. Nickolas treats.

CMS data shows 407 Medicare services from Dr. Nickolas across 7 procedure codes in 2024, for 168 Medicare patients. Medicare paid $41,819 for them.

CMS counts 168 Medicare patients who saw Dr. Nickolas in 2024. The largest group is 65 to 74, with 67 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 39% are also on Medicaid. Their average risk score is 6.09, 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. Nickolas' median patient age at 71, with 65% women.

In 2024, Dr. Nickolas wrote 175 Medicare Part D claims for 47 patients. 60% of them were for generic drugs. CMS names the drug for 89 of them, across 5 drugs with 11 or more claims each, at $141,375 in total drug cost. In 2023, CMS named 72 claims across 4 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Nickolas for performance year 2024, reported through an alternative payment model (APM). Dr. Nickolas accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Nickolas as offering telehealth.

Dmand AI links 111 papers to Dr. Nickolas, published from 2006 to 2025. 2020 was the busiest year, with 7. The most frequent topics are Bone Density, Absorptiometry, Photon and Renal Insufficiency, Chronic. Dr. Nickolas has published most often in J Bone Miner Res. Dr. Nickolas' most frequent co-authors are Adi Cohen, MD, Elizabeth Joan Shane, MD and Emily Margaret Stein, MD.

Dmand AI links Dr. Nickolas to 6 clinical trials, 3 of them phase 2 studies. 1 is still active or recruiting. Conditions studied include Chronic Kidney Disease-Mineral and Bone Disorder, Vascular Calcification and Rickets. Columbia University sponsors the most, 4.

CMS Open Payments shows 47 general payments to Dr. Nickolas from 7 drug and device companies from 2017 to 2025. Consulting fees make up the largest share, 41% of the total. Amgen Inc. paid the most, $29,264.

Dr. Nickolas graduated from University of Pittsburgh School of Medicine in 1998. Dr. Nickolas is a member of American Society of Bone and Mineral Research and ASN.

Dr. Nickolas is in network with 16 carriers, including Aetna, Excellus BlueCross BlueShield and United Healthcare. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.