Dental Emergencies on Medi-Cal: Atherton HPSM Guide

If you have a severe toothache, a broken tooth or a knocked-out tooth, call a dentist first. Go to the emergency room or call 911 if you have trouble breathing or swallowing, rapidly spreading facial swelling, a suspected broken jaw, or bleeding that won't stop. HPSM members can often get emergency dental care for pain or injury through their Medi-Cal dental benefit. Our Belmont office takes a limited number of San Mateo County Medi-Cal patients, so call to ask about availability.

What counts as a dental emergency?

A dental emergency usually means severe pain, an injury to a tooth or the mouth, or signs of infection that need attention soon. Common examples include:

• A toothache that doesn't ease with rinsing, gentle flossing, or over-the-counter pain relief
• A cracked, broken, or knocked-out tooth
• Swelling in the gum or face near a sore tooth
• A lost filling or crown that leaves a tooth painful or exposed

Not every tooth problem is an emergency. A mild sensitivity or a small chip with no pain can usually wait for a regular visit. If you're unsure, calling a dentist's office is a reasonable first step.

Dentist or ER: where should you go?

Most dental problems are best treated by a dentist, because an emergency room generally can't fix a tooth. ERs focus on urgent medical needs such as controlling bleeding, managing pain, treating infection, or protecting the airway. Whatever happens at the ER, you will still need to follow up with a dentist.

Go to the ER or call 911 for:

• Difficulty breathing or swallowing
• Facial swelling that is spreading quickly, especially after a toothache
• A suspected broken jaw
• Heavy bleeding that won't stop, including from a bitten tongue or lip
• A serious head or facial injury

Call a dentist right away for:

• Severe or lasting tooth pain
• A cracked or broken tooth
• A knocked-out permanent tooth, where time matters
• A localized swelling or a pimple-like bump on the gum

If your dentist's office is closed and the problem can't wait, the emergency room is a sensible backup.

What can you do while you wait?

• Toothache: Rinse with warm water and gently floss to remove trapped food. Don't put aspirin directly on the tooth or gums, because it can burn the tissue.
• Swelling or a cracked tooth: Apply a cold compress to the outside of the face and see a dentist as soon as possible.
• Knocked-out adult tooth: Keep it moist at all times. If you can, place it back in the socket without touching the root. If not, keep it between your cheek and gum or in milk, and get to a dentist right away.
• Knocked-out baby tooth: Keep it moist and have a dentist take a look. A dentist will decide whether it should go back in.

How does HPSM dental help in an emergency?

Medi-Cal dental benefits through Health Plan of San Mateo may include Medi-Cal dental care through HPSM, covering preventive visits, necessary restorative treatment, and care for pain or injury. Exact coverage, limits, and what counts as an emergency can vary, so it's worth asking HPSM Dental at 650-616-1522 or checking your member materials. Members can often use their HPSM member card at the visit.

Some members are affected by upcoming changes. HPSM has said dental benefits stay in place for all members through the end of 2026. Starting January 1, 2027, some members with certain immigration statuses will move to Medi-Cal Dental Fee-For-Service. After July 1, 2027, those members will keep coverage for emergencies only. People under 19 are not affected, and there are exceptions for pregnancy and for some former foster youth. If you're unsure where you stand, call HPSM Member Services at 1-800-750-4776.

Care for Atherton patients

Families in West Atherton, Lindenwood, and the Lloyden Park area often ask us where to turn when a tooth problem hits after a busy day. If you're an HPSM member, a quick call can tell you whether we have room to see you. It's about a 15 to 18 minute drive north on Highway 101 or El Camino Real from Atherton to our office at 2100 Carlmont Drive, Suite 8, in Belmont.

What to bring

• Your HPSM member card and a photo ID
• A list of your medications and any allergies
• The time the injury happened, plus any tooth pieces or a knocked-out tooth stored in milk

Common questions about Medi-Cal emergency dental care

Usually not. A dentist can treat the cause. The ER makes sense for trouble breathing or swallowing, fast-spreading swelling, a suspected broken jaw, or uncontrolled bleeding, or if no dentist is available and the problem can't wait.

Emergency care for pain or injury is often covered, but details vary. Ask HPSM Dental at 650-616-1522 before your visit if you can.

We accept a limited number of San Mateo County Medi-Cal patients. Please call (650) 591-1984 to ask about current availability.

Swelling can signal infection, and pain relief alone doesn't treat the cause. A dentist should evaluate it promptly, and spreading swelling or trouble breathing needs emergency care.

Questions about your next step?

If you're an HPSM member in Atherton or a nearby city and have a tooth problem, call our team at (650) 591-1984 or visit carlmontdentalcare.com to ask about availability and what to expect.