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Emergency Medicine

Halsey A. Heinselman, MD

Works at hospitals in Gastonia, NC · Rock Hill, SC · North Carolina, South Carolina

Summary

Dr. Halsey A. Heinselman, MD is an emergency medicine doctor at 222 S Herlong Ave, Rock Hill, SC 29732. Phone: (803) 329-1234. Accepts Medicare assignment. In 2024, Halsey A. Heinselman had 189 Original Medicare patients and 214 services. NPI 1265753610. 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 Halsey A. Heinselman, 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 Halsey A. Heinselman accept Medicare assignment?
Yes. Medicare's clinician data says Halsey A. Heinselman 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 Halsey A. Heinselman see?
In 2024, CMS data shows 189 Original Medicare patients and 214 services for Halsey A. Heinselman. This counts Original Medicare only and measures volume, not quality.
What is Halsey A. Heinselman's NPI number?
1265753610. 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 Halsey A. Heinselman, 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 patients189
Services billed to Medicare214
Different services or procedures16
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)125 services
  2. Emergency department visit with moderate level of medical decision making (99284)47 services
  3. Critical care, first 30-74 minutes (99291)13 services
  4. Emergency department visit with low level of medical decision making (99283)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%
  • Arthritis58%
  • Chronic kidney disease39%
  • Diabetes37%
  • Ischemic heart disease36%

Hospitals where Halsey A. Heinselman works

Medicare's Facility Affiliation Data lists Halsey A. Heinselman 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 Halsey A. Heinselman is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Halsey A. Heinselman as a member of these groups (CMS data updated October 2, 2026).

  • Acs Primary Care Physicians - Southeast PC420 clinicians in the group
  • Gastonia Physician Services PLLC67 clinicians in the group

Specialties

Find other Emergency Medicine doctors in South Carolina →

Other emergency medicine doctors in Rock Hill

Clinicians with the same Medicare primary specialty in Rock Hill, SC — not a recommendation.

All emergency medicine doctors in Rock Hill →

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
Graduation year2009 (17 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1265753610
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