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Allergy/Immunology

Brett W. Hronek, MD

Works at hospitals in Branson, MO · Springfield, MO · Missouri

Summary

Dr. Brett W. Hronek, MD is an allergist and immunologist at 1001 E Primrose, Springfield, MO 65807. Phone: (417) 875-3000. Accepts Medicare assignment. In 2024, Brett W. Hronek had 178 Original Medicare patients and 3,307 services. NPI 1275791568. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Allergist and immunologist (Medicare lists Allergy/Immunology)
  • Address: 1001 E Primrose, Springfield, MO 65807 · Directions (4 more locations)
  • Phone: (417) 875‑3000
  • Medicare: Accepts Medicare assignment
  • Hospitals: Cox Medical Center Branson, Cox Medical Centers
  • Group practice: Lester E Cox Medical Centers
  • Medical school: University Of Iowa, Rj & L Carver College Of Medicine · graduated 2008 (18 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Brett W. Hronek, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Brett W. Hronek accept Medicare assignment?
Yes. Medicare's clinician data says Brett W. Hronek accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Brett W. Hronek see?
In 2024, CMS data shows 178 Original Medicare patients and 3,307 services for Brett W. Hronek. This counts Original Medicare only and measures volume, not quality.
What is Brett W. Hronek's NPI number?
1275791568. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Brett W. Hronek, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients178
Services billed to Medicare3,307
Different services or procedures53
Participating Medicare providerYes
Average age of these patients71

Most frequent services

  1. Test for allergy using allergenic extract (95004)1,201 services
  2. Professional service for preparation and provision of 1 or more antigens (95165)430 services
  3. Professional service for multiple injections of allergen (95117)197 services
  4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)100 services
  5. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)49 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure70%
  • High cholesterol66%
  • Arthritis56%
  • Asthma35%
  • COPD22%
  • Diabetes20%

Hospitals where Brett W. Hronek works

Medicare's Facility Affiliation Data lists Brett W. Hronek at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Cox Medical Center BransonBranson, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260094
  • Cox Medical CentersSpringfield, MO · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 260040

Practice locations

Addresses where Brett W. Hronek is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Brett W. Hronek as a member of this group (CMS data updated October 2, 2026).

  • Lester E Cox Medical Centers232 clinicians in the group

Specialties

Find other Allergy/Immunology doctors in Missouri →

Other allergist and immunologists in Springfield

Clinicians with the same Medicare primary specialty in Springfield, MO — not a recommendation.

All allergist and immunologists in Springfield →

Other clinicians in Lester E Cox Medical Centers

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolUniversity Of Iowa, Rj & L Carver College Of Medicine
Graduation year2008 (18 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1275791568
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians