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Internal Medicine

Brent Herndon, DO

Sees patients in San Antonio, TX · Texas

Summary

Dr. Brent Herndon, DO is an internal medicine doctor at 4330 Medical Dr, Suite 500, San Antonio, TX 78229. Phone: (210) 558-0122. Accepts Medicare assignment. NPI 1619323300. Source: CMS National Downloadable File, updated October 2, 2026.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 4330 Medical Dr, Suite 500, San Antonio, TX 78229 · Directions
  • Phone: (210) 558‑0122
  • Medicare: Accepts Medicare assignment
  • Group practice: Wellmed Networks, Inc.
  • Medical school: University Of North Texas Hsc, College Of Osteopathic Med · graduated 2016 (10 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Brent Herndon, 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 Brent Herndon accept Medicare assignment?
Yes. Medicare's clinician data says Brent Herndon 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.
What is Brent Herndon's NPI number?
1619323300. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Brent Herndon is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Brent Herndon as a member of this group (CMS data updated October 2, 2026).

  • Wellmed Networks, Inc.112 clinicians in the group

Specialties

Find other Internal Medicine doctors in Texas →

Other internal medicine doctors in San Antonio

Clinicians with the same Medicare primary specialty in San Antonio, TX — not a recommendation.

All internal medicine doctors in San Antonio →

Other clinicians in Wellmed Networks, Inc.

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

Clinician information

CredentialDO
Medical schoolUniversity Of North Texas Hsc, College Of Osteopathic Med
Graduation year2016 (10 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1619323300
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians