Physician
Barry F Zeffren, MD
According to 2025 Medicare claims, Barry Zeffren, MD (NPI: 1205908639) practices allergy/immunology in the St. Louis, MO-IL market, with the plurality of this provider's patient population coming from Madison, IL. This provider's primary affiliated billing organization is ALLERGY & ASTHMA CARE LTD (NPI: 1982824736; TIN: 371319106) and primary practice location at 62034-1702. Zeffren is affiliated with the IRCCO (ACO ID: A2619), participating under the MSSP model.
Zeffren's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 116 traditional Medicare patients, billed 3,483 HCPCS/CPT codes, and received $36,214 in Medicare payments. The top billing code was 99205 (New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more). Part D data shows 1,159 prescription claims across 162 beneficiaries totaling $948,214 in drug costs, led by Dupixent Pen (Dupilumab). DME data shows 73 claims. Open Payments data shows 34 records totaling $611. You can download detailed data with all billing codes (2015-2024). For more recent data, please contact us.
Over the past 10 years, this provider's Medicare Part B carrier billing has changed little. Concurrently, Part D prescription costs have moved sharply higher in recent years, from $177,195 to $948,214. In contrast, DME billing represents a smaller volume and rose steadily, from $678 to $1,134.