MyNemours Sign-InSaturday: 8 a.m. to noon.
For established patients with routine illness or injury. Call Saturday for a same-day appointment.
Hours of Operation
Monday–Friday: 8 a.m. to 5 p.m.
Complimentary Meet-and-Greet Appointments
Walk-In Sick Care
Walk-in sick care for established patients is available 8–9 a.m., Monday through Friday.
Important Numbers
Fax: (407) 830-4907
Poison Control: (800) 222-1222
Emergencies: 911
Why Choose Us
For more than 25 years in Longwood, our primary pediatricians and staff have cared for kids from birth to age 18. We cherish being your family’s resource for preventive and wellness information and services, vaccinations and routine care for everyday childhood illnesses and bumps and bruises.
Your Child's Patient-Centered Medical Home
We are a certified Patient-Centered Medical Home, which means your child receives coordinated care that meets stringent national standards. Here, we take a team approach to caring for your child, and you are an important member of the team. Learn More »
Families choose us for comprehensive pediatric primary care and:
- focus on prevention, whole-child wellness and effective management of chronic conditions
- family inclusion in care decisions
- coordination of services, including those outside our office
We also offer expertise and services such as:
- an FAAP-certified pediatrician committed to lifelong learning (Fellow of American Academy of Pediatrics)
- expertise in behavioral and developmental disabilities
- obesity management and prevention
- access to Nemours pediatric experts in a wide range of specialties, close to home
- 24/7 online doctor visits with Nemours pediatricians via CareConnect
- seamless physician access electronic health records so we're all on the same page
- online patient portal and email communication with caregivers through MyNemours
First Visit
For the first visit, a child must be accompanied by a parent or legal guardian with proof of custody.
Language(s) Spoken
English, Spanish
Interpreter Services:
- available for most languages
- available for hearing impaired with advance notice
Doctors & Care Teams
SallyAnn Marchi, PA-C
Practicing Since: 2014
Languages Spoken: English
Languages Spoken: English
Alfonso Mireles, MD
Practicing Since: 1984
Languages Spoken: Spanish
Languages Spoken: Spanish
Odette Vazquez Rojas, MD
Languages Spoken: Spanish
Map & Directions
Our primary care pediatrics office is conveniently located in the medical campus at South Seminole Hospital off of W. State Road 434.
Locations & Services
Children can get the full spectrum of pediatric care through our extensive network.
The Best Measles Protection: Vaccination
The United States is seeing the highest number of measles cases since 1994, with reports in 24 states. Call your doctor to make sure your family’s vaccines are up to date.
24/7 Online Doctor Visits
See a Nemours pediatrician for minor illnesses and injuries 365 days a year with on demand doctor visits. Access a live video chat from your mobile device or computer.
Billing Information
Get help with your child's health care expenses. Financial Assistance »
Use online bill pay or send by mail. Pay Your Bill »
Note: Bills and forms are from Children's Health Alliance, the name of the Nemours pediatric network.
Primary Care Blog
Advice from our experts on helping your child grow up happier and healthier.
MyNemours
Schedule appointments, request prescription refills, send messages to your child’s care team, and access medical records. Sign In | Learn More