Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Radiation Oncology

William R. Sigmon Jr., MD

Works at hospitals in Hickory, NC · North Carolina

Summary

Dr. William R. Sigmon Jr., MD is a radiation oncologist at 920 Church N St, Concord, NC 28025. Phone: (704) 333-7376. Accepts Medicare assignment. In 2024, William R. Sigmon Jr. had 234 Original Medicare patients and 1,773 services. NPI 1750439519. 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: Radiation oncologist (Medicare lists Radiation Oncology)
  • Address: 920 Church N St, Concord, NC 28025 · Directions
  • Phone: (704) 333‑7376
  • Medicare: Accepts Medicare assignment
  • Hospitals: Catawba Valley Medical Center, Frye Regional Medical Center
  • Group practice: Southeast Radiation Oncology Group, P.A.
  • Medical school: University Of North Carolina At Chapel Hill School Of Medicine · graduated 1987 (39 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about William R. Sigmon Jr., 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 William R. Sigmon Jr. accept Medicare assignment?
Yes. Medicare's clinician data says William R. Sigmon Jr. 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 William R. Sigmon Jr. see?
In 2024, CMS data shows 234 Original Medicare patients and 1,773 services for William R. Sigmon Jr.. This counts Original Medicare only and measures volume, not quality.
What is William R. Sigmon Jr.'s NPI number?
1750439519. 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 William R. Sigmon Jr., 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 patients234
Services billed to Medicare1,773
Different services or procedures31
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Ct guidance for insertion of radiation therapy fields (77014)508 services
  2. Calculation of radiation therapy dose (77300)224 services
  3. Intra-fraction localization and tracking of target or patient motion during delivery of radiation therapy (eg,3d positional tracking, gating, 3d surface tracking), each fraction of treatment (G6017)212 services
  4. Design and construction of complex radiation treatment device (77334)195 services
  5. Radiation treatment management, 5 treatment sessions (77427)187 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%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)75%
  • High blood pressure74%
  • Arthritis46%
  • Ischemic heart disease34%
  • Diabetes33%

Hospitals where William R. Sigmon Jr. works

Medicare's Facility Affiliation Data lists William R. Sigmon Jr. 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 William R. Sigmon Jr. is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists William R. Sigmon Jr. as a member of this group (CMS data updated October 2, 2026).

  • Southeast Radiation Oncology Group, P.A.52 clinicians in the group

Specialties

Find other Radiation Oncology doctors in North Carolina →

Other radiation oncologists in North Carolina

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

All radiation oncologists in North Carolina →

Other clinicians in Southeast Radiation Oncology Group, P.A.

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

Clinician information

CredentialMD
Medical schoolUniversity Of North Carolina At Chapel Hill School Of Medicine
Graduation year1987 (39 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1750439519
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