Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Christopher John Williamson, MD

Radiation Oncology Physician in Stockbridge, GA · enumerated 2020 · practices at Henry Radiation Oncology Center, LLC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1326675208

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Registry record

Entity type Individual (Type 1)

Name Christopher John Williamson

Credential MD

Sex Male

Practice address Stockbridge, GA, 30281

Phone (770) 907-0554

Enumeration date Mar 23, 2020

Last updated in NPPES Jul 28, 2026

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 103707 (GA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Christopher Williamson's NPI record?

Cross-check NPI 1326675208 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1326675208 active?

Yes, as of the latest NPPES snapshot, NPI 1326675208 is active (record last updated 2026-07-28).

Other providers at this practice address

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Kim Neisler Radiation Oncology Physician · Stockbridge, GA NPI 1093760217 Henry Radiation Oncology Center, LLC Radiation Oncology Physician · Stockbridge, GA NPI 1689906505

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-28.