Mount Sinai Health System logo
Mount Sinai Health System
New York, New York

Senior Radiation Therapist- Radiation Oncology- MSH- Full Time Days

Radiation TherapistFull-Time

Listed compensation

$65.38-$65.91/hr

The week · per this posting

Ask the employer about the work setting, call expectations, weekend coverage and time off.

Posted 2h ago · Verified live

Job Description

The Senior Radiation Therapist is an experienced clinician who delivers safe, accurate, and compassionate radiation therapy while serving as the clinical lead for an assigned treatment unit or simulator.

In addition to providing expert patient care, this role is responsible for coordinating daily clinical operations, performing advanced quality assurance activities, ensuring the accuracy and integrity of treatment documentation and record-and-verify systems, and promoting the efficient flow of patient care.

The Senior Radiation Therapist serves as a mentor and resource for radiation therapists, students, and new employees, collaborating closely with physicians, physicists, dosimetrists, nursing, and department leadership to uphold the highest standards of patient safety and quality. This role may assume additional leadership responsibilities in the absence of management.

Main Function

  • Administer radiation therapy treatments according to the Radiation Oncologist’s prescription under minimal supervision.
  • Keep accurate daily records of treatments administered.
  • Teaches radiation therapy students technical procedures
  • Assist in the supervision of the staff radiation therapist
  • Demonstrates strong understanding of practical psychology, the physiology of cancer, and the emotional and physical responses of patients undergoing treatment.
  • Acts as Chief Therapist/Supervisor when needed

Responsibilities

  • 1. Accurately sets-up patients for treatment
  • 2. Administers radiation treatments
  • 3. Maintains accurate daily treatment records
  • 4. Perform simple dose calculations by hand or by using computer software

5. Checks the Radiation Oncologist’s prescription to determine any mathematical or technical errors.

6. Performs safety checks on treatment machines/simulators and records data daily

7. Verifies/Localizes treatment area using radiographic film or electronic medium and submits films to appropriate staff for further action

8. Interprets beam films to determine accuracy and follows through with having films checked and approved by the appropriate Radiation Oncologist

9. Understands the function of the equipment and is able to use it to its full potential. Understands the use of wedges and compensating filters, appreciates the misuse or omission during treatment

10. Understand all procedures and practices before proceeding with the patient set-up. Contacts the appropriate staff if uncomfortable or unsure of procedure

11. Detects treatment unit malfunctions and knows when safe limits of malfunction have been reached. Reports malfunction to Supervisor, Chief Therapist and Physics

12. Explains treatment procedure to patients, answer questions, and reassures patient in order to alleviate fears and/or apprehension. Tends to patient modesty

  • 13. Maintains visual and audible communication with the patient during treatment
  • 14. Reports any unusual or adverse patient reactions, as a result of radiation treatment, to the appropriate staff member
  • 15. Is responsible for instructing student radiation therapist
  • 16. Evaluates students at the end of their rotation
  • 17. Maintains an organized treatment room, stocked with supplies

18. Schedules patient appointments when necessary. Ensures that daily treatment schedule is accurate and maximizes therapist’s time

19. Ensure that weekly chart checks are done

20. Attends chart rounds, displays films and participates in discussion of patient treatment. Attends in service and ad hoc training sessions

  • 21. Ensures that all charts for new patients are reviewed at chart rounds
  • 22. Orientates new employees on assigned treatment unit
  • 23. Ensures correctness of record and verify system
  • 24. Schedules in-patients daily on transport list

25. Creates immobilization devices during simulator rotation. Create/adjust shielding block as needed

  • 26. Keeps patients in waiting area informed of delays and any progress made in the resolution of the delays
  • 27. Assists Supervisor/Chief Therapist in establishing new and improved procedures and policies for improved patient care and better working environment
  • 28. Makes recommendation to Supervisor/Chief Therapist at the time of therapists’ performance appraisal
  • 29. Displays professional behavior at all times
  • 30. Performs other duties as assigned

Qualifications

  • Graduate of an approved, two year, hospital-based certificate program, two year associate degree program, or four year baccalaureate degree program in Radiation Therapy
  • ARRT registered or eligible for registration within the field of Radiation Therapy
  • Three to five years of post-certification experience
  • Simulation experience required
  • Promotions are based on demonstrated competencies
  • Name: Certification from American Registry of Radiologic Technologists (ARRT).

Issuing Agency: Current New York State Radiation Therapist License – New York State Department of Health

  • BLS Certification Issuing Agency: AHA

Collective bargaining unit: SEIU 1199-MSH

Compensation Statement

The Mount Sinai Health System (MSHS) provides salary ranges that comply with the New York City Law on Salary Transparency in Job Advertisements. The salary range for the role is $65.38 - $65.91 Hourly. Actual salaries depend on a variety of factors, including experience, education, and operational need. The salary range or contractual rate listed does not include bonuses/incentive, differential pay or other forms of compensation or benefits.

SEIU 1199 at Mount Sinai Hospital, 169 - CSM Radiation Oncology - MSH, Mount Sinai Hospital

Strength Through Unity and Inclusion

The Mount Sinai Health System is committed to fostering an environment where everyone can contribute to excellence. We share a common dedication to delivering outstanding patient care.

When you join us, you become part of Mount Sinai’s unparalleled legacy of achievement, education, and innovation as we work together to transform healthcare.

We encourage all team members to actively participate in creating a culture that ensures fair access to opportunities, promotes inclusive practices, and supports the success of every individual.

At Mount Sinai, our leaders are committed to fostering a workplace where all employees feel valued, respected, and empowered to grow. We strive to create an environment where collaboration, fairness, and continuous learning drive positive change, improving the well-being of our staff, patients, and organization.

Our leaders are expected to challenge outdated practices, promote a culture of respect, and work toward meaningful improvements that enhance patient care and workplace experiences.

We are dedicated to building a supportive and welcoming environment where everyone has the opportunity to thrive and advance professionally. Explore this opportunity and be part of the next chapter in our history.

About the Mount Sinai Health System

Mount Sinai Health System is one of the largest academic medical systems in the New York metro area, with more than 48,000 employees working across eight hospitals, more than 400 outpatient practices, more than 300 labs, a school of nursing, and a leading school of medicine and graduate education.

Mount Sinai advances health for all people, everywhere, by taking on the most complex health care challenges of our time — discovering and applying new scientific learning and knowledge; developing safer, more effective treatments; educating the next generation of medical leaders and innovators; and supporting local communities by delivering high-quality care to all who need it.

Through the integration of its hospitals, labs, and schools, Mount Sinai offers comprehensive health care solutions from birth through geriatrics, leveraging innovative approaches such as artificial intelligence and informatics while keeping patients’ medical and emotional needs at the center of all treatment.

The Health System includes more than 9,000 primary and specialty care physicians; 13 joint-venture outpatient surgery centers throughout the five boroughs of New York City, Westchester, Long Island, and Florida; and more than 30 affiliated community health centers.

We are consistently ranked by U.S. News & World Report's Best Hospitals, receiving high "Honor Roll" status, and are highly ranked: No. 1 in Geriatrics, top 5 in Cardiology/Heart Surgery, and top 20 in Diabetes/Endocrinology, Gastroenterology/GI Surgery, Neurology/Neurosurgery, Orthopedics, Pulmonology/Lung Surgery, Rehabilitation, and Urology.

New York Eye and Ear Infirmary of Mount Sinai is ranked No. 12 in Ophthalmology. U.S. News & World Report’s “Best Children’s Hospitals” ranks Mount Sinai Kravis Children's Hospital among the country’s best in several pediatric specialties.

The Icahn School of Medicine at Mount Sinai is ranked No. 11 nationwide in National Institutes of Health funding and in the 99th percentile in research dollars per investigator according to the Association of American Medical Colleges.

Newsweek’s “The World’s Best Smart Hospitals” ranks The Mount Sinai Hospital as No. 1 in New York and in the top five globally, and Mount Sinai Morningside in the top 20 globally.

Equal Opportunity Employer

The Mount Sinai Health System is an equal opportunity employer, complying with all applicable federal civil rights laws.

We do not discriminate, exclude, or treat individuals differently based on race, color, national origin, age, religion, disability, sex, sexual orientation, gender, veteran status, or any other characteristic protected by law.

We are deeply committed to fostering an environment where all faculty, staff, students, trainees, patients, visitors, and the communities we serve feel respected and supported.

Our goal is to create a healthcare and learning institution that actively works to remove barriers, address challenges, and promote fairness in all aspects of our organization.

Qualifications

Education
Professional certificate or licensure
Experience
2+ years of experience

Key Skills

Radiation Therapy AdministrationPatient Setup and PositioningDose CalculationPrescription VerificationTreatment Equipment Safety ChecksRadiographic Film InterpretationPatient CommunicationStudent Training and EvaluationClinical Operations CoordinationImmobilization Device CreationShielding Block Adjustment

Radiation Therapy Career Context

Mount Sinai Health System holds silver-tier status on WeekdayDoc's Top Employers work-life index, composite score 71/100, 268 active listings.

Of the 40 active Radiation Therapy listings this role was benchmarked against, 28% have no call, 70% require no weekends.

Radiation Therapy pay on WeekdayDoc is up 7.2% vs. the prior quarter (through Aug 2026).

The cost-of-living index for New York is 107.9 (US average = 100; BEA Regional Price Parities (2024)), so the posted ~$137k midpoint carries the purchasing power of roughly $127k in an average-cost state. 64.6% of New York clinicians report burnout symptoms in WeekdayDoc's Burnout Index (2026-01 data).

Top Radiation Therapist Jobs

12 matches · ranked by pay

Salary Distribution12 jobs · 10 employers

2
<$145k
5
$145k-165k
0
$165k-185k
4
$185k-205k
1
$206k

Annual compensation range

Work-Life Balance Distribution12 jobs · 10 employers

0
1-2
0
3-4
2
5-6
10
7-8
0
9-10

Higher = better work-life balance

#1

Radiation Therapist II

Sutter Health · Sacramento, California

$70.83-$99.15/hr
#2

Radiation Therapist

Montage Health · Monterey, California

$72.18-$96.52/hr
#3

Radiation Therapist - Pacific Cancer Care

$75-$95/hr
#4

Radiation Therapist II-2

$65.1-$91.14/hr
+ 10 more · ranked by pay

Work-life snapshot

median 5.1this job 1.5
Below most Radiation Therapy listings for work-life

Listing-based score, 0–10, across 531 comparable listings. Shaded area = the share scoring below this one.

Living in New York

Typical 3-bedroom home value
$876k
Typical market rent
$4,154/mo
Residents’ average commute
40 min
State income tax
Up to 10.9%
Sources & methodology

Sources: Zillow home values (Aug 2026), Zillow market rents (Aug 2026), U.S. Census ACS 2024 five-year.

City-level figures. Not a cost-of-living guarantee.

Mount Sinai Health System logo

About Mount Sinai Health System

Hospitals and Health Care
New York, NY
10,000+ employees

Benefits & Perks

Collective bargaining unit: SEIU 1199-MSH