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Neurosurgery

Ewell L. Nelson, MD

Works at hospitals in Louisville, CO · Colorado

Summary

Dr. Ewell L. Nelson, MD is a neurosurgeon at 100 Health Park Dr, Louisville, CO 80027. Phone: (303) 643-1159. Accepts Medicare assignment. In 2024, Ewell L. Nelson had 320 Original Medicare patients and 783 services. NPI 1881634194. 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: Neurosurgeon (Medicare lists Neurosurgery)
  • Address: 100 Health Park Dr, Louisville, CO 80027 · Directions (3 more locations)
  • Phone: (303) 643‑1159
  • Medicare: Accepts Medicare assignment
  • Hospital: AdventHealth Avista
  • Group practice: Portercare Adventist Health System
  • Medical school: Baylor College Of Medicine · graduated 1998 (28 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Ewell L. Nelson, 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 Ewell L. Nelson accept Medicare assignment?
Yes. Medicare's clinician data says Ewell L. Nelson 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 Ewell L. Nelson see?
In 2024, CMS data shows 320 Original Medicare patients and 783 services for Ewell L. Nelson. This counts Original Medicare only and measures volume, not quality.
What is Ewell L. Nelson's NPI number?
1881634194. 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 Ewell L. Nelson, 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 patients320
Services billed to Medicare783
Different services or procedures44
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)227 services
  2. Insertion of cage or mesh device to spine bone and disc space during spine fusion (22853)69 services
  3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)61 services
  4. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)52 services
  5. Fusion of additional segment of spine (22614)36 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).

  • Arthritis75%
  • High cholesterol69%
  • High blood pressure62%
  • Ischemic heart disease33%
  • Osteoporosis33%
  • Anxiety22%

Hospitals where Ewell L. Nelson works

Medicare's Facility Affiliation Data lists Ewell L. Nelson 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.

  • AdventHealth AvistaLouisville, CO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 060103

Practice locations

Addresses where Ewell L. Nelson is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Ewell L. Nelson as a member of this group (CMS data updated October 2, 2026).

  • Portercare Adventist Health System774 clinicians in the group

Specialties

Find other Neurosurgery doctors in Colorado →

Other neurosurgeons in Colorado

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

All neurosurgeons in Colorado →

Other clinicians in Portercare Adventist Health System

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

Clinician information

CredentialMD
Medical schoolBaylor College Of Medicine
Graduation year1998 (28 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1881634194
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