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Geriatric Medicine

Julie A. Zacharias Simpson, DO

Sees patients in Las Vegas, NV · Nevada

Summary

Dr. Julie A. Zacharias Simpson, DO is a geriatrician at 8689 W Charleston Blvd, Suite 105, Las Vegas, NV 89117. Phone: (702) 304-5900. Accepts Medicare assignment. In 2024, Julie A. Zacharias Simpson had 140 Original Medicare patients and 513 services. NPI 1609070341. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Geriatrician (Medicare lists Geriatric Medicine)
  • Address: 8689 W Charleston Blvd, Suite 105, Las Vegas, NV 89117 · Directions
  • Phone: (702) 304‑5900
  • Medicare: Accepts Medicare assignment
  • Group practice: Dignity Health Medical Group Nevada LLC
  • Medical school: University Of North Texas Hsc, College Of Osteopathic Med · graduated 2007 (19 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Julie A. Zacharias Simpson, 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 Julie A. Zacharias Simpson accept Medicare assignment?
Yes. Medicare's clinician data says Julie A. Zacharias Simpson 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 Julie A. Zacharias Simpson see?
In 2024, CMS data shows 140 Original Medicare patients and 513 services for Julie A. Zacharias Simpson. This counts Original Medicare only and measures volume, not quality.
What is Julie A. Zacharias Simpson's NPI number?
1609070341. 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 Julie A. Zacharias Simpson, 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 patients140
Services billed to Medicare513
Different services or procedures23
Participating Medicare providerYes
Average age of these patients78

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)358 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)87 services
  3. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)12 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%
  • Arthritis41%
  • Osteoporosis28%
  • Depression26%
  • COPD24%

Practice locations

Addresses where Julie A. Zacharias Simpson is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Julie A. Zacharias Simpson as a member of this group (CMS data updated October 2, 2026).

  • Dignity Health Medical Group Nevada LLC124 clinicians in the group

Specialties

Find other Geriatric Medicine doctors in Nevada →

Other geriatricians in Las Vegas

Clinicians with the same Medicare primary specialty in Las Vegas, NV — not a recommendation.

All geriatricians in Las Vegas →

Other clinicians in Dignity Health Medical Group Nevada LLC

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 year2007 (19 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1609070341
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. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians