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Emergency Medicine

Johnny L. Robertson Iii, MD

Works at hospitals in Myrtle Beach, SC · South Carolina

Summary

Dr. Johnny L. Robertson Iii, MD is an emergency medicine doctor at 809 82nd Pkwy, Myrtle Beach, SC 29572. Phone: (843) 692-1000. Accepts Medicare assignment. In 2024, Johnny L. Robertson Iii had 768 Original Medicare patients and 848 services. NPI 1841759628. 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: Emergency medicine doctor (Medicare lists Emergency Medicine)
  • Address: 809 82nd Pkwy, Myrtle Beach, SC 29572 · Directions
  • Phone: (843) 692‑1000
  • Medicare: Accepts Medicare assignment
  • Hospital: Grand Strand Regional Medical Center
  • Group practice: Acs Primary Care Physicians - Southeast PC
  • Medical school: West Virginia School Of Osteopathic Medicine · graduated 2019 (7 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Johnny L. Robertson 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 Johnny L. Robertson Iii accept Medicare assignment?
Yes. Medicare's clinician data says Johnny L. Robertson 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 Johnny L. Robertson Iii see?
In 2024, CMS data shows 768 Original Medicare patients and 848 services for Johnny L. Robertson Iii. This counts Original Medicare only and measures volume, not quality.
What is Johnny L. Robertson Iii's NPI number?
1841759628. 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 Johnny L. Robertson 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 patients768
Services billed to Medicare848
Different services or procedures30
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)541 services
  2. Emergency department visit with moderate level of medical decision making (99284)181 services
  3. Emergency department visit with low level of medical decision making (99283)43 services
  4. Critical care, first 30-74 minutes (99291)20 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%
  • Arthritis57%
  • Ischemic heart disease44%
  • Diabetes38%
  • Chronic kidney disease36%

Hospitals where Johnny L. Robertson Iii works

Medicare's Facility Affiliation Data lists Johnny L. Robertson 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 Johnny L. Robertson Iii is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

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

  • Acs Primary Care Physicians - Southeast PC420 clinicians in the group

Specialties

Find other Emergency Medicine doctors in South Carolina →

Other emergency medicine doctors in Myrtle Beach

Clinicians with the same Medicare primary specialty in Myrtle Beach, SC — not a recommendation.

All emergency medicine doctors in Myrtle Beach →

Other clinicians in Acs Primary Care Physicians - Southeast PC

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

Clinician information

CredentialMD
Medical schoolWest Virginia School Of Osteopathic Medicine
Graduation year2019 (7 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1841759628
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