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General Surgery

Kathleen M. Koerner, DO

Works at hospitals in Gonzales, TX · Texas

Summary

Dr. Kathleen M. Koerner, DO is a general surgeon at 1110 N Sarah Dewitt Dr, Gonzales, TX 78629. Phone: (830) 672-7581. Accepts Medicare assignment. In 2024, Kathleen M. Koerner had 70 Original Medicare patients and 217 services. NPI 1093936171. 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: General surgeon (Medicare lists General Surgery)
  • Address: 1110 N Sarah Dewitt Dr, Gonzales, TX 78629 · Directions
  • Phone: (830) 672‑7581
  • Medicare: Accepts Medicare assignment
  • Hospital: Memorial Hospital
  • Group practice: Gonzales Healthcare Systems
  • Medical school: Arizona College Of Osteopathic Medicine Mid Western University · graduated 2003 (23 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Kathleen M. Koerner, 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 Kathleen M. Koerner accept Medicare assignment?
Yes. Medicare's clinician data says Kathleen M. Koerner 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 Kathleen M. Koerner see?
In 2024, CMS data shows 70 Original Medicare patients and 217 services for Kathleen M. Koerner. This counts Original Medicare only and measures volume, not quality.
What is Kathleen M. Koerner's NPI number?
1093936171. 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 Kathleen M. Koerner, 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 patients70
Services billed to Medicare217
Different services or procedures45
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)40 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)34 services
  3. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)17 services
  4. New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more (99202)13 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 pressure75%
  • High cholesterol61%
  • Diabetes37%
  • Arthritis36%
  • Chronic kidney disease27%
  • Anxiety26%

Hospitals where Kathleen M. Koerner works

Medicare's Facility Affiliation Data lists Kathleen M. Koerner 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.

  • Memorial HospitalGonzales, TX · Acute Care Hospital · Emergency services: not listed by Medicare · CCN 450235

Practice locations

Addresses where Kathleen M. Koerner is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Kathleen M. Koerner as a member of this group (CMS data updated October 2, 2026).

  • Gonzales Healthcare Systems36 clinicians in the group

Specialties

Find other General Surgery doctors in Texas →

Other general surgeons in Texas

Clinicians with the same Medicare primary specialty in Texas — not a recommendation.

All general surgeons in Texas →

Other clinicians in Gonzales Healthcare Systems

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

Clinician information

CredentialDO
Medical schoolArizona College Of Osteopathic Medicine Mid Western University
Graduation year2003 (23 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1093936171
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