Dr. John Warren Holshouser, MD

Dr. Holshouser practices at Atrium Health Carolinas Medical Center in Charlotte, North Carolina, part of Advocate Health.

Dr. Holshouser's NPI, 1568474351, was assigned on August 12, 2006. Dr. Holshouser graduated from University of North Carolina School of Medicine in 1996. Dr. Holshouser holds North Carolina license 200000461.

Dr. Holshouser's primary practice is Atrium Health Carolinas Medical Center, at 1000 Blythe Blvd, Charlotte, NC 28203 in Mecklenburg County. The practice phone is (704) 355-2000.

Dr. Holshouser's primary practice is Atrium Health Carolinas Medical Center in Charlotte, North Carolina, part of Advocate Health. Dr. Holshouser is also affiliated with Atrium Health Pineville. The medical group on file is Atrium Health Cleveland Imaging. Dmand AI also links Dr. Holshouser to 3 more hospitals 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. Holshouser practices, 6 sites in all. Vendor and product names are available with a free account.

Cardiovascular disease is Dr. Holshouser's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Holshouser is board certified in cardiovascular disease by the American Board of Internal Medicine. Dmand AI has Dr. Holshouser's licenses on file in 3 states: North Carolina, South Carolina and Virginia.

Dmand AI lists atrial fibrillation and flutter, cardiac arrhythmia, heart blockage, intermittent racing heartbeat (PSVT), pacemaker or defibrillator implantation, pacemaker replacement, sick sinus syndrome and ventricular tachycardia among the conditions Dr. Holshouser treats.

CMS data shows 3,599 Medicare services from Dr. Holshouser across 33 procedure codes in 2024, for 1,406 Medicare patients. Medicare paid $158,443 for them.

CMS counts 1,406 Medicare patients who saw Dr. Holshouser in 2024. The largest group is 75 to 84, with 626 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 7% are also on Medicaid. Their average risk score is 1.80, 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. Holshouser's median patient age at 76, with 46% women.

In 2024, Dr. Holshouser wrote 2,795 Medicare Part D claims for 558 patients. 72% of them were for generic drugs. CMS names the drug for 2,573 of them, across 37 drugs with 11 or more claims each, at $838,091 in total drug cost. In 2023, CMS named 2,393 claims across 33 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 94 out of 100 for Dr. Holshouser for performance year 2024, reported through an alternative payment model (APM). Dr. Holshouser accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 27 procedures of pacemaker insertion or repair by Dr. Holshouser, more than 76% of the clinicians it reports for that procedure.

Dmand AI links 6 papers to Dr. Holshouser, published from 2012 to 2024. The most frequent topics are Electrocardiography, Heart Rate and ST Elevation Myocardial Infarction. Dr. Holshouser has published most often in Circulation. Dr. Holshouser's most frequent co-authors are John Michael Fedor, MD, Laszlo Littmann, MD and Sherry J. Saxonhouse, MD.

Dmand AI links Dr. Holshouser to 2 clinical trials. Conditions studied include Atrial Fibrillation, Tachycardia, Atrioventricular Nodal Reentry and Arrhythmias, Cardiac.

CMS Open Payments shows 174 general payments to Dr. Holshouser from 22 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 51% of the total. Biotronik Inc. paid the most, $6,144.

Dmand AI lists 3 awards for Dr. Holshouser, most recently NCQA HSRP in 2013.

Dr. Holshouser graduated from University of North Carolina School of Medicine in 1996. Dr. Holshouser is a member of ACC.

Dr. Holshouser is in network with 21 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.