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 For the Community For Providers About Us Careers
  • Start Your Care

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

  • Accepted Insurance
  • Hospital Payment Planning
  • Financial Assistance
  • Pricing Information
  • Before Your Visit

  • Sign Up for MyChart
  • Visitation Guidelines
  • 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
  • Foundation Relief
  • Community Care

  • In the Community
  • Health Highlights
  • Community Health Needs Assessment
  • Latest News
  • Center for Health Equity
  • Wellstar Find Help
  • Events & Programs

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

  • Wellstar Foundation
  • Donate
  • Ways to Give
  • Thank a Caregiver
  • West Georgia
    Health Foundation
  • Volunteer

  • PeopleCare Advisory Council
  • 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
  • Medical Staff Services
  • Provider Recruitment
  • 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
  • Nursing
  • 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
  • For the Community
  • For Providers
  • About Us
  • Careers
  • Search Search Search
  • MyChart MyChart MyChart

Start Your Care

Find a DoctorFind a LocationOur ServicesVirtual Visits

Planning

Accepted InsuranceHospital Payment PlanningFinancial AssistancePricing Information

Before Your Visit

Sign Up for MyChartVisitation Guidelines

While You're Here

Support & EntertainmentJoin an Event

After Your Visit

Pay Your BillGet Medical RecordsContact us

COVID-19 Support

COVID-19 InformationVaccinesTesting InformationFoundation Relief

Community Care

In the CommunityHealth HighlightsCommunity Health Needs AssessmentLatest NewsCenter for Health EquityWellstar Find Help

Events & Programs

Events CalendarOn-Demand ClassesSupport Groups

Give

Wellstar FoundationDonateWays to GiveThank a CaregiverWest Georgia
Health Foundation

Volunteer

PeopleCare Advisory CouncilFor Adults

Care

Transfer a PatientCures ActRefer a PatientLab Test DirectoryRequest to Conduct Research

Connect

Physician RelationsRequest Imaging ServicesWellstar Clinical PartnersWellstar Medical GroupMayo Clinic Care NetworkMedical Staff ServicesProvider Recruitment

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 ProgramNursing

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
  • Schedule With This Provider
  • Schedule At This Location
  • Schedule With This Provider
  • Schedule At This Location
  • Urgent Care
  • Primary Care
  • Virtual Care
  • Emergency Care
Close Close Close Book Now Menu
  • Schedule With This Provider
  • Schedule At This Location
  • Schedule With This Provider
  • Schedule At This Location
  • Urgent Care
  • Primary Care
  • Virtual Care
  • Emergency Care

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 Powder Springs Medical Center

4250 Brownsville Road
Powder Springs, GA 30127

  • Wellstar Powder Springs Medical Center
  • About Us
  • Our Team
  • Info
(678) 567-8000 Book Now COVID-19 Info

Location


About Us

About Us

Powder Springs Medical Center is a hometown practice with physicians, nurse practitioners and office staff with close family ties to the community. We are committed to our patients and want to be a part of their healthy lifestyles. We believe working together with our patients will help them meet their healthcare goals. To help our patients attain their health goals we recommend yearly physicals. All of our physicians are recognized as Bridges to Excellence physicians, certified for their quality diabetes care.

We offer free parking.

(678) 567-8000 Book Now COVID-19 Info
Meet our Team

Kristina Weems, LCSW

with Wellstar since 2023.

Specialties
Licensed Clin. Social Worker
Learn More
Michael Christa, MD

Primary Care Physician with Wellstar since 2000.

Specialties
Family Medicine
Learn More Book Appointment
Ahmed Mahmood, MD

Primary Care Physician with Wellstar since 2024.

Specialties
Family Medicine
Learn More
Andrea Gibson, NP

Nurse Practitioner with Wellstar since 2023.

Specialties
Family Medicine
Learn More Book Appointment
Martricia Turner, NP

Nurse Practitioner with Wellstar since 2007.

Specialties
Family Medicine
Learn More Book Appointment
Lindsay Richardson, NP

Nurse Practitioner with Wellstar since 2014.

Specialties
Family Medicine
Learn More Book Appointment
Georgia Forrest, MD

Primary Care Physician with Wellstar since 2014.

Specialties
Family Medicine
Learn More Book Appointment
Jeffrey Cox, MD

Primary Care Physician with Wellstar since 2015.

Specialties
Family Medicine
Learn More Book Appointment
Margaret Ngumi, NP

Nurse Practitioner with Wellstar since 2015.

Specialties
Family Medicine
Learn More Book Appointment
Nasby Limontas, NP

Nurse Practitioner with Wellstar since 2022.

Specialties
Family Medicine
Learn More Book Appointment
Chiamaka Ngwudike, MD

Primary Care Physician with Wellstar since 2022.

Specialties
Family Medicine
Learn More
See More Results

Meet our Team

Kristina Weems, LCSW

with Wellstar since 2023.

Specialties
Licensed Clin. Social Worker
Learn More
Michael Christa, MD

Primary Care Physician with Wellstar since 2000.

Specialties
Family Medicine
Learn More Book Appointment
Ahmed Mahmood, MD

Primary Care Physician with Wellstar since 2024.

Specialties
Family Medicine
Learn More
Andrea Gibson, NP

Nurse Practitioner with Wellstar since 2023.

Specialties
Family Medicine
Learn More Book Appointment
Martricia Turner, NP

Nurse Practitioner with Wellstar since 2007.

Specialties
Family Medicine
Learn More Book Appointment
Lindsay Richardson, NP

Nurse Practitioner with Wellstar since 2014.

Specialties
Family Medicine
Learn More Book Appointment
Georgia Forrest, MD

Primary Care Physician with Wellstar since 2014.

Specialties
Family Medicine
Learn More Book Appointment
Jeffrey Cox, MD

Primary Care Physician with Wellstar since 2015.

Specialties
Family Medicine
Learn More Book Appointment
Margaret Ngumi, NP

Nurse Practitioner with Wellstar since 2015.

Specialties
Family Medicine
Learn More Book Appointment
Nasby Limontas, NP

Nurse Practitioner with Wellstar since 2022.

Specialties
Family Medicine
Learn More Book Appointment
Chiamaka Ngwudike, MD

Primary Care Physician with Wellstar since 2022.

Specialties
Family Medicine
Learn More

Kristina Weems, LCSW

with Wellstar since 2023.

Specialties
Licensed Clin. Social Worker
Education
Master of Arts
Patient Rating

Michael Christa, MD

Primary Care Physician with Wellstar since 2000.

Specialties
Family Medicine
Education
Doctor of Medicine
Patient Rating

Dr. Michael W. Christa provides a full range of healthcare services to newborns, children, adolescents and adults. He received a Bachelor of Science from University of Georgia in Athens and earned his Doctorate in Medicine from Medical College of Georgia in Augusta. Dr. Christa completed his Family Practice residency in 1997 at the Memorial Medical Center in Savannah, Ga.
 
He was recognized by the National Committee for Quality Assurance (NCQA)’s Bridges to Excellence program for their quality diabetes care and management. The Bridges to Excellence program is designed to create significant leaps in the quality of care by recognizing and rewarding healthcare providers who demonstrate that they have implemented comprehensive solutions in the management of patients and deliver safe, timely, effective, efficient, equitable and patient-centered care.
 
 

Ahmed Mahmood, MD

Primary Care Physician with Wellstar since 2024.

Specialties
Family Medicine
Education
Doctor of Medicine
Patient Rating

Andrea Gibson, NP

Nurse Practitioner with Wellstar since 2023.

Specialties
Family Medicine
Education
Family Nurse Practitioner
Patient Rating

Martricia Turner, NP

Nurse Practitioner with Wellstar since 2007.

Specialties
Family Medicine
Education
Doctorate of Nursing Practice
Patient Rating

Lindsay Richardson, NP

Nurse Practitioner with Wellstar since 2014.

Specialties
Family Medicine
Education
Master of Science in Nursing
Patient Rating

Georgia Forrest, MD

Primary Care Physician with Wellstar since 2014.

Specialties
Family Medicine
Education
Doctor of Medicine
Patient Rating

Dr. Georgia Forrest received her bachelor’s degree in biology from Temple University in Philadelphia, Pa. Dr. Forrest received her medical degree from the University of Medicine and Dentistry of New Jersey. She completed her urban family medicine residency at Beth Israel Medical Center in New York, N.Y.

She is a member of the Society of Teachers of Family Medicine and the Academy of Family Physicians. Dr. Forrest is board certified in family medicine.

Dr. Forrest currently practices with Wellstar Powder Springs Medical Center.

Jeffrey Cox, MD

Primary Care Physician with Wellstar since 2015.

Specialties
Family Medicine
Education
Doctor of Medicine
Patient Rating

Dr. Jeffrey Cox received his bachelor’s degree in chemistry from Kennesaw State University in Kennesaw, Ga. He received his master’s degree from Georgia State University in Atlanta, Ga. Dr. Cox received his medical degree from East Tennessee State University’s James H. Quillen College of Medicine in Johnson City, Tenn. He completed his surgical residency at Erlanger Medical Center in Chattanooga, Tenn. He then completed his family medicine residency at the University of South Alabama in Mobile, Ala.

Dr. Cox is board certified in family medicine. He is a member of the Medical Association of Georgia, American Academy of Family Physicians and American Medical Association.

Dr. Cox currently is in practice with Wellstar Powder Springs Medical Center.

Margaret Ngumi, NP

Nurse Practitioner with Wellstar since 2015.

Specialties
Family Medicine
Education
Master of Science in Nursing
Patient Rating

Nasby Limontas, NP

Nurse Practitioner with Wellstar since 2022.

Specialties
Family Medicine
Education
Master of Science in Nursing
Patient Rating

Chiamaka Ngwudike, MD

Primary Care Physician with Wellstar since 2022.

Specialties
Family Medicine
Education
Doctor of Medicine
Patient Rating

Helpful Information for your next visit.

  • Appointments and Cancellations
  • Directions
  • Hospitalization
  • Insurance and Payments
  • Practice News
  • Prescription Refills
  • Printable Office Forms
  • Referrals
Appointments and Cancellations
To schedule an appointment please call our appointment line: (678) 567-8000.
 
Our phones are open between the hours of 8:00am to 4:00pm.
 
If you would like to request a non-urgent appointment more than 2 business days in advance, we offer online appointment requests by clicking the link on this web page.
 
We request 24 hour cancellation notice. If you need to cancel your appointment our answering service will gladly take this information and alert the office when we open. We do charge a $25.00 no show fee for missed appointments.
Directions
From I-20: Take Thornton Road exit (#44 toward Austell, C.H. James Parkway) to Brownsville Road. Turn right on Brownsville Road and are we are the first left.
Hospitalization
Our doctors have privileges at Wellstar Cobb Hospital. If you are admitted as an in-patient at Wellstar Cobb Hospital you will be seen by a Hospitalist physician who will communicate with your Primary Care Physician.
 
A Hospitalist is a physician who specializes in caring for patients in the hospital 24 hours a day. They are Board Certified Internal Medicine Physicians who will be responsible for your care from admission through discharge.
Insurance and Payments
We are committed to meeting your health care needs. Our goal is to keep your insurance or other financial arrangements as simple as possible.

Wellstar Medical Group participates in most major insurance plans. For a complete list of insurance participants at this practice please call the practice main line. We will file your insurance for you if we are a participating provider of your plan.

All co-payments are due at the time of service. Please remember to bring your insurance card (HMO, CMO, PPO, etc.) with you to each appointment.
Practice News
Contact this location for more information.
Prescription Refills
Two ways to obtain your routine refills, via your pharmacy, or you may access us directly, by email at www.powderspringsmedical.org At times you may be required to visit your provider before multiple refills will be granted. This insures your continued good health and well being and to address any other concerns that you might have.
 
Please note that any requests received to our office after 2:00 p.m. will be answered by noon of the following business day.
Printable Office Forms

Authorization for Release of PHI
Authorization for Release of PHI Spanish
MyChart Adult Proxy
MyChart Child Proxy
MyChart Teen Proxy
Notice of Privacy Practices Acknowledgement
Notice of Privacy Practices Acknowledgement Spanish
Patient Communication Designation
Patient Communication Designation Spanish
Patient Registration
Patient Registration Spanish
Referrals
If you would like to request a referral, please call our referral line at (678) 567-8060.
 
If you would like to request a referral on line you may click on the referral link on this web page.
 
Referrals will be completed within two business days. We ask that you pick up your referrals, this assures that you have the proper paperwork in hand when you see the specialists.
Back to Top
Branding illustration
Wellstar Logo
More than healthcare. PeopleCare.
Branding illustration
For Job Seekers & Team
Careers Diversity Equity Inclusion and Belonging Onboarding
For Students
Students Portal
Graduate Medical Education
Medical Residency Pharmacy Residency
For Business
Corporate Purchasing
For the Media
Media Room Community Health Needs Assessment
Help
Contact Us Pay Your Bill Policy & Privacy Information Hospital Transparency Information Price Transparency
For Job Seekers & Team
Careers Diversity Equity Inclusion and Belonging Onboarding
For Students
Students Portal

Graduate Medical Education
Medical Residency Pharmacy Residency
For Business
Corporate Purchasing
For the Media
Media Room Community Health Needs Assessment
Help
Contact Us Pay Your Bill Policy & Privacy Information Hospital Transparency Information Price Transparency

Copyright © 2025 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.

Cookie Preferences

We use cookies for booking and general analytics. Learn more about our internet privacy policy.