How to Call Tripler Army Medical Center for an Appointment

Reach Tripler's appointment line at (808) 433-5300

Tripler Army Medical Center in Honolulu takes appointment calls at (808) 433-5300. This is the main number for scheduling new appointments, changing existing ones, or asking about wait times. The line is staffed during business hours, typically Monday through Friday, 7:30 a.m. to 4:30 p.m. Hawaii Standard Time.

When you call, have your military ID number, date of birth, and the name of the clinic or specialty you need ready. If you're calling about a specific appointment you already have, the confirmation paperwork will have the appointment number — that speeds up the search. If you don't have it, the staff can look you up by name and ID.

Tripler also accepts some appointment requests through the Veterans Affairs (VA) My HealtheVet portal if you're a VA patient, and through the Military Health System (MHS) Genesis patient portal if you're an active-duty sponsor or family member. Not all clinics use online scheduling, so calling remains the most reliable method for most appointments.

Key Takeaways

• Call (808) 433-5300 during business hours (Monday–Friday, 7:30 a.m. to 4:30 p.m. Hawaii time) to schedule or change an appointment.
• Have your military ID number, date of birth, and the name of the clinic ready when you call to speed up the process.
• Some appointment types can be requested through the MHS Genesis or VA My HealtheVet portals, but phone scheduling works for all clinics.
• Tripler serves active-duty service members, retirees, family members, and may be able to access veterans depending on your sponsor status and DEERS enrollment.

What information you'll need before calling

Tripler's appointment staff will ask for several pieces of information to locate your record and schedule you correctly. Have your military ID number (or sponsor's ID if you're a family member), your date of birth, and your Social Security number ready. If you know which clinic or specialty you need — such as primary care, orthopedics, or cardiology — tell them that too.

If you're calling about an existing appointment, the confirmation letter or text message usually includes an appointment number. That number lets staff pull up your record in seconds. If you don't have it, they can search by name and ID, but it takes a bit longer.

If you're a family member or dependent calling on behalf of someone else, you may need to provide the sponsor's information instead. Tripler's staff will tell you what they need once you explain the situation.

When Tripler's appointment line is open

The main appointment line operates Monday through Friday, 7:30 a.m. to 4:30 p.m. Hawaii Standard Time. Hawaii does not observe daylight saving time, so the time difference between Hawaii and the mainland is consistent year-round: Hawaii is 10 hours behind Eastern Time and 2 hours behind Pacific Time.

If you call outside these hours, you'll reach an automated message. Some clinics have their own direct lines with different hours, but the main number (808) 433-5300 is the place to start if you don't know the clinic's direct line.

Tripler is closed on federal holidays. If you need urgent care outside business hours, the hospital's emergency department is open 24/7, and you can also contact the Veterans Crisis Line at 988 then press 1 if you're in crisis.

How to reschedule or cancel an appointment

To change or cancel an existing appointment, call the same number: (808) 433-5300. Have your appointment number ready if you have it. Tell the staff whether you need to reschedule to a different date or cancel entirely.

If you're rescheduling, the staff will check availability in the same clinic and offer you open slots. If you're canceling, let them know as soon as you know you can't make it — this frees the slot for another patient and prevents a no-show on your record.

Some appointment confirmations include a cancellation option in the text message or email, but calling is the most direct way to make sure the change goes through.

Online scheduling options through patient portals

Tripler patients can sometimes schedule appointments through the MHS Genesis patient portal (the Military Health System's online system) or the VA My HealtheVet portal depending on your status. Not all clinics offer online scheduling, and availability varies by specialty.

To use MHS Genesis, you need a Defense.gov login (CAC card or username and password). To use My HealtheVet, you need a VA.gov account. Both portals show your medical records, upcoming appointments, and prescription refills in addition to scheduling options.

If the clinic you need doesn't show online scheduling, or if you prefer to talk to someone, the phone line is always an option. Some patients find it faster to call, especially if they have questions about which clinic to see or what to bring.

What to expect when you call

When you reach the appointment line, a staff member will verify your identity using your ID number and date of birth. They'll ask what type of appointment you need — for example, a physical exam, follow-up for a specific condition, or a referral to a specialist. If you're a new patient to Tripler, they may ask a few screening questions.

The staff will then check the schedule for the clinic or provider you need and offer you available times. Appointments at Tripler can range from a few days to several weeks out depending on the specialty and current demand. If no times work for you, ask to be placed on a cancellation list — when another patient cancels, you may be called to fill that slot.

Before you hang up, confirm the date, time, and location (Tripler's main campus is in Honolulu, but some clinics may operate at satellite locations). Ask what to bring — usually your military ID and insurance card — and whether you need to arrive early for paperwork.

Frequently Asked Questions

Can I schedule an appointment online instead of calling?

Some clinics at Tripler allow online scheduling through MHS Genesis or VA My HealtheVet, but not all do. If the clinic you need doesn't offer it, or if you're unsure, calling (808) 433-5300 is the most reliable way to schedule any appointment.

What if I'm calling from the mainland and the time zone is confusing?

Hawaii is 10 hours behind Eastern Time and 2 hours behind Pacific Time, and it doesn't change for daylight saving. If it's noon on the mainland's East Coast, it's 2 a.m. in Hawaii. Call during Hawaii business hours: 7:30 a.m. to 4:30 p.m. Hawaii time, which is 5:30 p.m. to 2:30 a.m. Eastern, or 2:30 p.m. to 11:30 p.m. Pacific.

What if I can't reach anyone at the main number?

If the line is busy, try calling back in a few minutes. Some clinics have direct numbers; you can ask directory assistance for the specific clinic's line. You can also try scheduling through the MHS Genesis portal if you have access, or visit Tripler's main website to see if your clinic lists a direct contact number.

Do I need to be active duty to use Tripler?

No. Tripler serves active-duty service members, retirees, family members, and may be able to access veterans. Your access depends on your sponsor status and whether you're enrolled in DEERS (the Defense Enrollment may be able to access Reporting System). When you call, the staff can confirm whether you're may be able to access to schedule at Tripler.

What should I do if I need an urgent appointment?

If you need care the same day, tell the appointment staff it's urgent when you call. Tripler reserves same-day slots for acute issues. If it's after hours or you can't reach the appointment line, go to Tripler's emergency department (open 24/7) or call the Veterans Crisis Line at 988 then press 1 if you're in crisis.