GS-0648 Therapeutic Radiologic Technologist — Federal Salary & Workforce Data (2026)
Federal Radiation Therapist — GS-0648. The verified average salary for GS-0648 Therapeutic Radiologic Technologists is $123,488/year (OPM FedScope, 2026). Data from 307 non-redacted OPM records (April 2026).
Salary Source: OPM Federal Workforce Data (EHRI Snapshot, April 2026) • Records included: 307 • Redaction rate: 6.1%
GS-0648 Therapeutic Radiologic Technologist — Pay at a Glance
Salary and workforce snapshot from OPM EHRI Employment Snapshot, April 2026.
The GS-0648 Therapeutic Radiologic Technologist series showed 307 non-redacted federal employees in the April 2026 OPM snapshot. The verified average salary is $123,488/year (OPM FedScope, 2026). Use our GS Pay Calculator for your exact salary by grade, step, and location.
Salary = base pay + locality pay; excludes benefits. REDACTED records (OPM data release policy) are excluded from averages. Pay plan: General Schedule (GS) / Title 38 (VA). View occupation salary detail on OPM FedScope →
GS-0648 Employment Overview
| Metric | Value | Source & Notes |
|---|---|---|
| Avg Series Salary | $123,488 | OPM EHRI Snapshot (April 2026). 307 non-redacted records. Base + locality pay; excludes benefits. |
| Non-redacted records (sample size) | 307 | OPM EHRI Employment Snapshot, April 2026. REDACTED records excluded per OPM data release policy. |
| Redaction rate | 6.1% | OPM redacts salary records for privacy-sensitive positions (DoD, law enforcement, intelligence). FedTools suppresses series averages when redaction exceeds 20%. |
| Pay plan(s) | General Schedule (GS) / Title 38 (VA) | Primary pay plan(s) used for this occupational series in the federal government. |
| Typical grades | GS-9 to GS-12 | Most common grade range for this series. Actual assignment depends on the position description and agency. |
| Locality pay | 17.06% – 46.34% | Varies by duty station across 58 OPM pay areas. Rate x base pay = locality supplement. Included in the average salary above. |
| Pay cap (2026) | $197,200 | Executive Schedule Level IV. Applies to GS employees whose locality-adjusted salary would exceed this amount. Title 38 and special pay plans may exceed this cap. |
Top Agencies Employing GS-0648 Therapeutic Radiologic Technologists
Based on OPM EHRI Employment Snapshot (April 2026). Actual grade, step, and locality assignment varies by position and location.
- →Department of Veterans Affairs (VA)
- →Department of Defense (DoD)
- →Indian Health Service (IHS / HHS)
Key Duties — GS-0648 Therapeutic Radiologic Technologist
Representative duties for the 0648 occupational series based on OPM classification standards. Specific responsibilities vary by position and agency.
- →Delivery of radiation therapy treatments to cancer patients
- →Treatment simulation, positioning, and immobilization device fabrication
- →Linear accelerator (LINAC) operation and quality assurance
- →Patient education on side effect management
- →Brachytherapy and radiosurgery support (CyberKnife, Gamma Knife)
About the GS-0648 Therapeutic Radiologic Technologist Series
Therapeutic Radiologic Technologists (radiation therapists) administer prescribed doses of radiation to treat cancer under physician supervision. VA medical centers are the primary federal employer, providing comprehensive oncology care to veterans. All federal radiation therapists must hold ARRT (T) certification or equivalent credential. The 6.1% redaction is primarily DoD military treatment facility positions. The $123,488 average — above the government-wide mean — reflects the GS-10 to GS-11 concentration of credentialed radiation therapists, which is noticeably higher than Diagnostic Radiologic Technologists (0647, $101,905) due to the cancer treatment specialty and associated VA clinical pay differentials.
Calculate Your Exact GS-0648 Salary
Your actual pay depends on your GS grade, step, and duty station locality. Use our free calculator for an instant, accurate result.
GS-0648 Therapeutic Radiologic Technologist — Frequently Asked Questions
What is the average salary for a GS-0648 Therapeutic Radiologic Technologist?
The verified average salary for the GS-0648 Therapeutic Radiologic Technologist series is $123,488 as of 2026, based on OPM EHRI Employment Snapshot data (307 non-redacted records; 6.1% redaction rate). Use our GS Pay Calculator to find your exact pay by grade, step, and duty station.
What GS grades apply to the 0648 series?
The GS-0648 Therapeutic Radiologic Technologist series typically spans GS-9 to GS-12. Actual grade assignment depends on the position description, agency, and your qualifications. Use our GS Pay Calculator to look up the exact salary for any grade, step, and locality.
Which agencies employ GS-0648 Therapeutic Radiologic Technologists?
The largest federal employers of GS-0648 Therapeutic Radiologic Technologists include: Department of Veterans Affairs (VA), Department of Defense (DoD), Indian Health Service (IHS / HHS). These figures are based on the OPM EHRI Employment Snapshot (April 2026).
How is federal pay determined for GS-0648 positions?
Federal civilian pay for GS positions = Base Pay (by grade and step) × (1 + Locality Rate). The GS table has 15 grades (GS-1 through GS-15) and 10 steps per grade. Locality adjustments range from 17.06% (Rest of U.S.) to 46.34% in San Jose–San Francisco. Note: Some Therapeutic Radiologic Technologist positions (especially at VA) use Title 38 or special pay plans that allow above-GS-cap compensation. Use our GS Pay Calculator for an instant result.
Do GS-0648 federal employees receive FERS retirement benefits?
Yes, most GS-0648 positions qualify for the full federal benefits package: FERS pension (1–1.1% × High-3 Salary × Years of Service), TSP with up to 5% agency match, FEHB health insurance (government pays ~70% of premium), FEGLI life insurance, and FEDVIP dental/vision. Use our FERS Retirement Calculator to estimate your retirement income.
Other Federal Job Series Pay Pages
Salary data and workforce details for every GS occupational series in our database.
Data Accuracy Notice (YMYL): Salary figures are from the OPM Federal Workforce Data portal (EHRI Employment Snapshot, April 2026). The annualized_adjusted_basic_pay field captures base pay + locality pay under all pay plans (GS, Title 38, special rates). REDACTED records are excluded per OPM data release policy. FedTools publishes series-specific averages only when the non-redacted sample is representative (redaction ≤ 20%, n ≥ 50). This page does not constitute financial or career advice. Always verify current pay rates with your agency HR office and OPM.gov.