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Neurology

John R. Jefferson Iii, MD

Works at hospitals in Kyle, TX · Austin, TX · Texas

Summary

Dr. John R. Jefferson Iii, MD is a neurologist at 1500 Red River St, Austin, TX 78701. Phone: (512) 324-7000. Accepts Medicare assignment. In 2024, John R. Jefferson Iii had 342 Original Medicare patients and 636 services. NPI 1477719227. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about John R. Jefferson Iii, 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 John R. Jefferson Iii accept Medicare assignment?
Yes. Medicare's clinician data says John R. Jefferson Iii 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 John R. Jefferson Iii see?
In 2024, CMS data shows 342 Original Medicare patients and 636 services for John R. Jefferson Iii. This counts Original Medicare only and measures volume, not quality.
What is John R. Jefferson Iii's NPI number?
1477719227. 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 John R. Jefferson Iii, 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 patients342
Services billed to Medicare636
Different services or procedures18
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)90 services
  2. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)86 services
  3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)73 services
  4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)67 services
  5. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)62 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 cholesterol75%
  • Arthritis55%
  • Ischemic heart disease36%
  • Depression36%
  • Anxiety36%

Hospitals where John R. Jefferson Iii works

Medicare's Facility Affiliation Data lists John R. Jefferson Iii 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.

Practice locations

Addresses where John R. Jefferson Iii is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists John R. Jefferson Iii as a member of this group (CMS data updated October 2, 2026).

  • Seton Family of Doctors792 clinicians in the group

Specialties

Find other Neurology doctors in Texas →

Other neurologists in Austin

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

All neurologists in Austin →

Other clinicians in Seton Family of Doctors

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

Clinician information

CredentialMD
Medical schoolUniversity Of Texas Medical School At Houston
Graduation year2008 (18 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1477719227
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