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Neurology

Richard B. Dewey Iii, MD

Works at hospitals in Jacksonville, FL · Florida

Summary

Dr. Richard B. Dewey Iii, MD is a neurologist at 4500 San Pablo Rd S, Jacksonville, FL 32224. Phone: (904) 953-2000. Accepts Medicare assignment. In 2024, Richard B. Dewey Iii had 314 Original Medicare patients and 10,359 services. NPI 1104358878. 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: Neurologist (Medicare lists Neurology)
  • Address: 4500 San Pablo Rd S, Jacksonville, FL 32224 · Directions (1 more location)
  • Phone: (904) 953‑2000
  • Medicare: Accepts Medicare assignment
  • Hospital: Mayo Clinic
  • Group practice: Mayo Clinic Jacksonville (+1 more)
  • Medical school: University Of Texas Southwestern Medical School At Dallas · graduated 2017 (9 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Richard B. Dewey 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 Richard B. Dewey Iii accept Medicare assignment?
Yes. Medicare's clinician data says Richard B. Dewey 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 Richard B. Dewey Iii see?
In 2024, CMS data shows 314 Original Medicare patients and 10,359 services for Richard B. Dewey Iii. This counts Original Medicare only and measures volume, not quality.
What is Richard B. Dewey Iii's NPI number?
1104358878. 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 Richard B. Dewey 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 patients314
Services billed to Medicare10,359
Different services or procedures26
Participating Medicare providerYes
Average age of these patients77

Most frequent services

  1. Injection, onabotulinumtoxina, 1 unit (J0585)4,850 services
  2. Injection, incobotulinumtoxin a, 1 unit (J0588)2,900 services
  3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)642 services
  4. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)292 services
  5. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)244 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 cholesterol75%
  • High blood pressure70%
  • Arthritis55%
  • Anxiety47%
  • Depression45%
  • Ischemic heart disease40%

Hospitals where Richard B. Dewey Iii works

Medicare's Facility Affiliation Data lists Richard B. Dewey 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.

  • Mayo ClinicJacksonville, FL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 100151

Practice locations

Addresses where Richard B. Dewey Iii is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Richard B. Dewey Iii as a member of these groups (CMS data updated October 2, 2026).

  • Mayo Clinic Jacksonville1,615 clinicians in the group
  • Stuart H. Isaacson, M.D, P.A.5 clinicians in the group

Specialties

Find other Neurology doctors in Florida →

Other neurologists in Jacksonville

Clinicians with the same Medicare primary specialty in Jacksonville, FL — not a recommendation.

All neurologists in Jacksonville →

Other clinicians in Mayo Clinic Jacksonville

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

Clinician information

CredentialMD
Medical schoolUniversity Of Texas Southwestern Medical School At Dallas
Graduation year2017 (9 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1104358878
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