Healing Hands, Caring Hearts, Here To Help

Open 365 Days A Year For You

Urgent Care to age 26

Monday – Friday 

Monday – Friday
Saturday, Sunday


10 am to 2 pm Appointment ONLY 

5 pm to 10 pm appt & limited walk-in slots available
10 am to 10 pm appt & limited walk-in slots available

Healing Hands, Caring Hearts, Here To Help

to age 26

Monday – Friday 5pm to 10pm
Saturday, Sunday 10am to 10pm

Open 365 Days A Year For You

Fever, Vomiting & Diarrhea


A fever is an increase in the normal body temperature and can indicate infection or foreign substance in the body like viruses, bacteria, drugs or toxins.  A fever is usually helpful since it helps to fight the infection or toxin.

Children may get a fever after receiving vaccinations and a mild fever (less than 100 degrees) when teething.

Common Questions

A: Infants less than 3 months old if they have a rectal temperature greater than 100.4

Children with temperature over 104.

Children with temperature over 101 for more than 2 days.

Vomiting and Diarrhea

Most cases of vomiting and diarrhea are caused by viral infections that resolve on their own, but some are caused by bacteria that can cause severe dehydration.  More severe illnesses such as appendicitis, meningitis and concussions may also cause vomiting.

Common Questions

Come in if your child has:

  • Lethargy
  • Decreased drinking
  • Unable to keep down liquids
  • Decreased urination
  • Blood or mucous in the stool or vomit
  • Concern for possible COVID infection
  • Severe abdominal pain
  • Bright red bowel movement
  • Recent foreign travel
  • Headache, drowsiness or confusion
  • High fever

A: Yes.  After Hour Pediatrics can prescribe anti-nausea and vomiting medication, which we can also give during the visit.

A: Most of the time, we can manage dehydration with medication and oral hydration with Pedialyte.  Very rarely, we need to send a child to the Emergency Room for IV hydration which we can help to coordinate.

A: We don’t recommend any anti-diarrhea medication such as Lomotil, Immodium, Kaopectate, Pepto-Bismol, which can sometimes make diarrhea worse in children.  Good hydration with oral rehydration solution helps most patients.

We are a family-friendly children’s urgent care and minor emergency center in downtown San Mateo

For over 20 years, we have provided pediatric urgent medical care to babies, children and young adults from San Mateo, Burlingame, Millbrae, San Bruno, San Carlos, Belmont, Redwood City, and Foster City.  The clinic is staffed by Board Certified pediatricians, is easy to find, and has parking right outside the door.

Our clinic is open for Urgent Care after hours when your child’s doctor is unavailable.  We recommend you make an appointment so we can prepare for your arrival, please fill out all the forms and upload your insurance information. We have a limited number of walk-in spots each night.

Questions & Answers

A: We treat Urgent Care patients from birth to age 26.  If we are very busy, we give younger children priority and may ask the young adult to be seen in Adult Urgent Care.

A: You should come to After Hour Pediatrics if your child requires urgent care when your pediatrician or primary care physician’s office is closed.  We are a convenient and affordable alternative to the Emergency Room.  If the injury or illness is life-threatening, you should go to the nearest hospital.

We are open 365 days a year, Monday-Friday 5pm -10pm and Weekends/Holidays 10am-10pm.

If you are in doubt about whether to come and visit us please call us at 650-579-6581

A: The typical visit requires 30 -60 minutes depending on the services you need.  If you need lab tests, breathing treatments or a procedure performed, you may be in the office for longer.  During surge of illnesses or patients with emergencies, wait times can be longer.

For Urgent Care,  you can “Save a Spot” or drop in.  We see walk in patients in the order that they arrive with exceptions for critically ill children or those at high-risk.  We do our best to see “Saved Spots” on time, and always leave openings for walk in patients.

  • We believe sick or injured children should be seen by a pediatrician.  Other urgent care facilities may have pediatric rooms or areas designated for children, but they are not staffed with clinicians who have specialized training in pediatrics.
  • We are ideally located in downtown San Mateo, 10 minutes from San Francisco airport.
  • We offer free parking right outside our front door.
  • We are child friendly, caring, compassionate and gentle.
  • We will work with your child’s primary physician, informing them about your visit and ensuring they are fully briefed about your child’s medical situation as soon as possible.
  • We are independently run so you can talk to us about financial pressures.  We might be able to help.

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