Skip Navigation
Book Now! Find care near you Find care near you Find care near you
wellstar-logo
Wellstar Go Back
Go to MyChart

Questions? We can help!

Call (770) 956-STAR (7827)

Monday - Friday, 7 AM - 4:30 PM

Contact Us
For Patients & Families Community For Providers About Us Careers
  • Start Your Care

  • Find a Doctor
  • Find a Location
  • Our Services
  • Virtual Visits
  • Planning

  • Accepted Insurance
  • Financial Assistance
  • Pricing Information
  • Before Your Visit

  • Sign Up for MyChart
  • Visitation Guidelines
  • Pick a Caregiver
  • While You're Here

  • Support & Entertainment
  • Join an Event
  • After Your Visit

  • Pay Your Bill
  • Get Medical Records
  • Contact us
  • COVID-19 Support

  • COVID-19 Information
  • Vaccines
  • Testing Information
  • Visitation Updates
  • Foundation Relief
  • Community Health

  • Health Highlights
  • Community Health Needs Assessment
  • Latest News
  • Center for Health Equity
  • Events & Programs

  • Community Outreach
  • Events Calendar
  • On-Demand Classes
  • Support Groups
  • Give

  • Wellstar Foundation
  • Donate
  • Ways to Give
  • Thank a Caregiver
  • Volunteer

  • For Adults
  • Care

  • Transfer a Patient
  • Cures Act
  • Refer a Patient
  • Lab Test Directory
  • Request to Conduct Research
  • Connect

  • Physician Relations
  • Request Imaging Services
  • Wellstar Clinical Partners
  • Wellstar Medical Group
  • Mayo Clinic Care Network
  • Log In

  • EpicCare Link
  • Lawson Connect
  • MyID Password Reset
  • Citrix Access
  • Leadership

  • Authority Board
  • Board Of Trustees
  • Foundation Board
  • Regional Health Boards
  • Executive Leadership
  • Awards, Recognition & Safety

  • Accreditation & Certifications
  • Awards & Recognition
  • Safety First Program
  • Careers at Wellstar

  • Apply now
  • Upcoming virtual events
  • Why Wellstar?
  • Nursing Careers

  • Nursing (Direct Care)
  • Nursing Leadership
  • Nursing (Non-bedside)
  • Nursing Support
  • Physician, APP & Clinical Careers

  • Advanced Practice Providers (APPs)
  • Allied Health Professionals
  • Homecare & Hospice
  • Physicians
  • Support Team Careers

  • Administrative & Clerical
  • Coding, Compliance & HIM Systems
  • Facility, Environmental & Nutrition/Food Services
  • Information Technology & Systems
  • For Patients & Families
  • Community
  • For Providers
  • About Us
  • Careers
  • Search Search Search
  • MyChart MyChart MyChart

Start Your Care

Find a DoctorFind a LocationOur ServicesVirtual Visits

Planning

Accepted InsuranceFinancial AssistancePricing Information

Before Your Visit

Sign Up for MyChartVisitation GuidelinesPick a Caregiver

While You're Here

Support & EntertainmentJoin an Event

After Your Visit

Pay Your BillGet Medical RecordsContact us

COVID-19 Support

COVID-19 InformationVaccinesTesting InformationVisitation UpdatesFoundation Relief

Community Health

Health HighlightsCommunity Health Needs AssessmentLatest NewsCenter for Health Equity

Events & Programs

Community OutreachEvents CalendarOn-Demand ClassesSupport Groups

Give

Wellstar FoundationDonateWays to GiveThank a Caregiver

Volunteer

For Adults

Care

Transfer a PatientCures ActRefer a PatientLab Test DirectoryRequest to Conduct Research

Connect

Physician RelationsRequest Imaging ServicesWellstar Clinical PartnersWellstar Medical GroupMayo Clinic Care Network

Log In

EpicCare LinkLawson ConnectMyID Password ResetCitrix Access
About Wellstar

Our patients are the center of everything we do. We're nationally ranked and locally recognized for our high-quality care, inclusive culture, exceptional doctors and caregivers, and one of the largest and most integrated healthcare systems in Georgia.

About Us

Leadership

Authority BoardBoard Of TrusteesFoundation BoardRegional Health BoardsExecutive Leadership

Awards, Recognition & Safety

Accreditation & CertificationsAwards & RecognitionSafety First Program

Careers at Wellstar

Apply nowUpcoming virtual eventsWhy Wellstar?

Nursing Careers

Nursing (Direct Care)Nursing LeadershipNursing (Non-bedside)Nursing Support

Physician, APP & Clinical Careers

Advanced Practice Providers (APPs)Allied Health ProfessionalsHomecare & HospicePhysicians

Support Team Careers

Administrative & ClericalCoding, Compliance & HIM SystemsFacility, Environmental & Nutrition/Food ServicesInformation Technology & Systems
Questions? We can help!

Call (770) 956-STAR (7827)

Monday - Friday, 7 AM - 4:30 PM

Contact Us
Close
  • Urgent Care
  • Primary Care
  • Virtual Care
  • Emergency Care
Close Close Close Book Now Menu
  • Urgent Care
  • Primary Care
  • Virtual Care
  • Emergency Care

Online Scheduling

Book Your Next Appointment

Primary care for you and your family, close to home.

Schedule Appointment

Introducing

Wellstar Virtual Care

Access Wellstar healthcare providers
wherever you are.

Get started

Warning Warning Our "Book Now" feature should not be used for life threatening conditions such as heart attack, severe injury, poisoning, chest pain, or stroke. If you are experiencing such conditions, STOP and CALL 911 IMMEDIATELY or visit your nearest Emergency Department.

I Understand

Wellstar Radiation Oncology

4500 Hospital Boulevard
Suite 120
Roswell, GA 30076
Our Areas of Focus

Radiation oncology consults

Find answers to your questions about the different types of radiation treatments for your individual cancer diagnosis from a board-certified radiation oncologist.

Multidisciplinary care

Get the most patient-centered care from a multidisciplinary team of cancer experts who collaborate to offer you a personalized cancer care plan. 

Specialized IORT treatment

Offering IORT at Wellstar North Fulton Hospital, a specialized procedure requiring real-time collaboration between a radiation oncologist and a breast surgeon.

Advanced radiation therapy

Variety of treatment options delivered by HDR, CyberKnife, TrueBeam, and TomoTherapy delivered at Wellstar Cancer Network locations.

  • Wellstar Radiation Oncology
  • About Us
  • Our Team
  • Info
(770) 410-4526
About Us
About Us

Our patients have access to the highest standard of care by highly experienced radiation oncologists who employ a range of advanced techniques and technologies. Radiation oncologists at this practice location offer consultations about radiation therapy for patients who have a new cancer diagnosis. We work as part of a greater multidisciplinary team at Wellstar North Fulton Hospital for patients with all types of cancer, including breast cancer, prostate cancer, lung cancer and brain and spine cancer. This is because we believe in doing what’s best for the patient.  

Advanced technology & techniques

Our radiation oncologists perform intraoperative radiation therapy (IORT) in tandem with a breast surgeon at Wellstar North Fulton Hospital. A surgeon removes the tumor and a radiation oncologist directly applies radiation while the patient is asleep in the operating room.  We also offer radioactive seed implant for prostate cancer patients.

For patients who require other types of radiation, our network of Wellstar cancer care locations deliver a wide variety of treatment options with state-of-the-art technology including HDR, CyberKnife, TrueBeam and TomoTherapy. 

 
Office Location
4500 Hospital Boulevard
Suite 120
Roswell, GA 30076

Contact

Phone (770) 410-4526

Fax (770) 999-2828


(770) 410-4526
Meet our Team

Card image
Olusola Obayomi-Davies, MD

Radiation Oncologist with Wellstar since 2019.

Specialties
Radiation Oncology
Learn More
Card image
Sheree Brown, MD

Radiation Oncologist with Wellstar since 2006.

Specialties
Radiation Oncology
Learn More
Card image
Justin Hart, MD

Radiation Oncologist with Wellstar since 2010.

Specialties
Radiation Oncology
Learn More
Card image
Mark McLaughlin, MD

Radiation Oncologist with Wellstar since 2003.

Specialties
Radiation Oncology
Learn More
Card image
William Thoms, MD

Radiation Oncologist with Wellstar since 1997.

Specialties
Radiation Oncology
Learn More
Card image
Nasarachi Onyeuku, MD

Radiation Oncologist with Wellstar since 2019.

Specialties
Radiation Oncology
Learn More
Card image
Adam Ferro, MD

Radiation Oncologist with Wellstar since 2019.

Specialties
Radiation Oncology
Learn More
Card image
Rakendu Shukla, MD

Radiation Oncologist with Wellstar since 2020.

Specialties
Radiation Oncology
Learn More
Card image
Rohit Ganju, MD

Radiation Oncologist with Wellstar since 2020.

Specialties
Radiation Oncology
Learn More
See More Results

Meet our Team

Card image
Olusola Obayomi-Davies, MD

Radiation Oncologist with Wellstar since 2019.

Specialties
Radiation Oncology
Learn More
Card image
Sheree Brown, MD

Radiation Oncologist with Wellstar since 2006.

Specialties
Radiation Oncology
Learn More
Card image
Justin Hart, MD

Radiation Oncologist with Wellstar since 2010.

Specialties
Radiation Oncology
Learn More
Card image
Mark McLaughlin, MD

Radiation Oncologist with Wellstar since 2003.

Specialties
Radiation Oncology
Learn More
Card image
William Thoms, MD

Radiation Oncologist with Wellstar since 1997.

Specialties
Radiation Oncology
Learn More
Card image
Nasarachi Onyeuku, MD

Radiation Oncologist with Wellstar since 2019.

Specialties
Radiation Oncology
Learn More
Card image

Olusola Obayomi-Davies, MD

Radiation Oncologist with Wellstar since 2019.

Specialties
Radiation Oncology
Education
Doctor of Medicine
Card image

Sheree Brown, MD

Radiation Oncologist with Wellstar since 2006.

Specialties
Radiation Oncology
Education
Doctor of Medicine
Patient Rating
rating   4.7 out of 5 (30 ratings)

Dr. Brown received her bachelor’s degree in psychology from Spelman College and earned her medical degree from Howard University Medical School. She completed her residency in internal medicine at Franklin Square Hospital in Baltimore, followed by a residency in radiation oncology from Howard University Hospital, Washington Hospital Center Cancer Institute in Washington, D.C.

Dr. Brown is a professional member of the American Brachytherapy Society and the American Society for Therapeutic Radiology and Oncology. In her spare time, she enjoys spending time with her family, cycling, aerobics and travel.

 

Card image

Justin Hart, MD

Radiation Oncologist with Wellstar since 2010.

Specialties
Radiation Oncology
Education
Doctor of Medicine
Patient Rating
rating   4.7 out of 5 (71 ratings)

Dr. Hart received his bachelor’s degree in biochemistry and molecular biology from Dartmouth College in Hanover, NH. He earned his doctor of philosophy from the Department of Pathology at Duke University Graduate School and his medical degree from Duke University School of Medicine. Dr. Hart completed his internship in the Department of Medicine at Vanderbilt University Medical Center and his residency in radiation oncology at M.D. Anderson Cancer Center in Houston.

Prior to joining Wellstar, Dr. Hart worked for North Georgia Radiation Therapy where he was credentialed and on staff at Wellstar Kennestone Hospital, Paulding Treatment Center and Cartersville Hope Center. He is board-certified in radiology.

Card image

Mark McLaughlin, MD

Radiation Oncologist with Wellstar since 2003.

Specialties
Radiation Oncology
Education
Doctor of Medicine
Patient Rating
rating   4.4 out of 5 (54 ratings)

Dr. McLaughlin received his bachelor’s degree in computer science from Duke University and his medical degree from the Medical College of Georgia in Augusta. He completed his surgical internship at Shands Teaching Hospital, College of Medicine at University of Florida, where he also completed his residency in radiation oncology. Dr. McLaughlin also holds a master’s degree in healthcare administration from Central Michigan University.

Dr. McLaughlin is board-certified in radiation oncology. In his spare time, he enjoys sports, travel, gardening, boating, martial arts and reading.

Card image

William Thoms, MD

Radiation Oncologist with Wellstar since 1997.

Specialties
Radiation Oncology
Education
Doctor of Medicine
Card image

Nasarachi Onyeuku, MD

Radiation Oncologist with Wellstar since 2019.

Specialties
Radiation Oncology
Education
Doctor of Medicine
Patient Rating
rating   4.7 out of 5 (30 ratings)

Dr. Nasarachi Onyeuku received his bachelor of science degree in chemistry from Furman University in Greenville, South Carolina, where he graduated magna cum laude. He received his medical degree from the Wake Forest School of Medicine in Winston-Salem, North Carolina. He completed his residency internship while at Wake Forest Baptist Medical Center, and completed his physician residency in the Department of Radiation Oncology at the University of Maryland Medical Center in Baltimore, Maryland.

Dr. Onyeuku is currently in practice with Wellstar Radiation Oncology.

Card image

Adam Ferro, MD

Radiation Oncologist with Wellstar since 2019.

Specialties
Radiation Oncology
Education
Doctor of Medicine
Card image

Rakendu Shukla, MD

Radiation Oncologist with Wellstar since 2020.

Specialties
Radiation Oncology
Education
Doctor of Medicine
Card image

Rohit Ganju, MD

Radiation Oncologist with Wellstar since 2020.

Specialties
Radiation Oncology
Education
Doctor of Medicine
Helpful Information for your next visit.

  • Appointments and Cancellations
  • Directions
  • Hospitalization
  • Insurance and Payments
  • Prescription Refills
  • Printable Office Forms
  • Referrals
Appointments and Cancellations
Please arrive at your appointment 30 minutes early in order to complete any necessary documentation. For cancellations, please notify the clinic at least 24 hours prior to the scheduled appointment date and time.
 
Directions
Our practice is located on the campus of Wellstar North Fulton Hospital at the 4500 Building. You can find us on the first floor. The Cancer STAT Clinic is located adjacent to the Radiology Department and behind the lab.
Hospitalization
Physicians at this practice location have privileges at various Wellstar hospitals, depending on the physician, including Wellstar North Fulton, Kennestone, Cobb and Paulding hospitals.
Insurance and Payments
Wellstar works hard to create lasting relationships with medical insurance companies to ensure you’re receiving the best possible care. Please contact your insurance carrier via the member benefits number listed on the back of your insurance card. This is to ensure that you fully understand your coverage and financial responsibility. If your insurance plan requires a referral for office visits, a referral must be received prior to your visit. If you require hospitalization, we will file primary insurance claims for any physician services provided to you while at the hospital. Our participation in insurance plans is subject to change. Please notify us if you expect a change to your insurance or if your address or phone number changes.
Prescription Refills
We will send your prescriptions to your pharmacy of choice. 
Printable Office Forms
Once you have scheduled your appointment, we will discuss and provide further information on the retrieval of your medical records, appointment details and directions. 
Referrals
Referring providers can call our main office line to help patients get scheduled within three business days of the initial phone call.  
Back to Top
Branding illustration
Wellstar Logo
More than healthcare. PeopleCare.
Branding illustration
For Job Seekers & Team
Careers Onboarding
For Students
Students Portal
Graduate Medical Education
Atlanta Medical Center Kennestone Hospital
For Business
Occupational Medicine Corporate Purchasing
For the Media
Media Room Community Health Needs Assessment
Help
Contact Us Pay Your Bill Policy & Privacy Information Hospital Transparency Information
For Job Seekers & Team
Careers Onboarding
For Students
Students Portal

Graduate Medical Education
Atlanta Medical Center Kennestone Hospital
For Business
Occupational Medicine Corporate Purchasing
For the Media
Media Room Community Health Needs Assessment
Help
Contact Us Pay Your Bill Policy & Privacy Information Hospital Transparency Information

Copyright © 2022 Wellstar Health System. All Rights Reserved.

Wellstar does not discriminate on, exclude people or treat them differently on the basis of race, color, national origin, age, disability, sex, gender identity or expression or any other type of discrimination prohibited by law.