Contact
We answer the phone.
Call (800) 977-3002 for the fastest help — a real person picks up during business hours, and oxygen support is answered 24/7. Prefer to write? Use the form below and we'll reply within one business day.
If this is a medical emergency, call 911.
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Diamond Respiratory Care
1403 Palmyrita Ave, Riverside, CA 92507
Phone: (800) 977-3002
Referral & records fax: (800) 438-2048
Hours: Mon–Thu 8:00–5:00, Fri 7:00–4:00 Pacific · Closed Saturday and Sunday
After hours: 24/7 oxygen support at (800) 977-3002
Send a message
For non-urgent questions. We reply within one business day — messages sent after Friday afternoon are answered the next business day. Please don't include medical or insurance details such as diagnoses or member ID numbers.