Montage Medical Group - Outpatient Immunology Services (OPIS) Clinic

Montage Medical Group - Outpatient Immunology Services (OPIS) Clinic

2 Upper Ragsdale, Building A Monterey, CA 93940

Ask for a referral

You’ll need a doctor’s referral to receive care at this location.


  • Main: 831-333-3040
  • Fax: 831-886-3639

If you have a concern related to HIV care after 5 p.m., call (831) 646-4547.

For all other urgent questions after hours, call our main phone number to reach our answering service staff and an on-call doctor.

Due to the pandemic, we are currently experiencing longer than normal call wait times. We apologize for any delays and appreciate your patience. Existing Montage Medical Group patients may also ask non-urgent medical questions, request a referral, and manage medications and appointments online using MyChart. If you don’t have a MyChart account, sign up today.

Hours of Operation

Sunday: Closed
Monday: 8:00 AM - 5:00 PM
Tuesday: 8:00 AM - 5:00 PM
Wednesday: 8:00 AM - 5:00 PM
Thursday: 8:00 AM - 5:00 PM
Friday: 8:00 AM - 5:00 PM
Saturday: Closed

Our office closes on the following holidays:

  • New Year’s Day
  • Martin Luther King Jr. Day
  • President’s Day
  • Memorial Day
  • Independence Day
  • Labor Day
  • Thanksgiving Day and the next day
  • Christmas Day

If a holiday happens on a Saturday, our office will close the Friday before that day. If a holiday lands on a Sunday, we’re closed the next day (Monday).

COVID-19 restrictions and policies

For your safety, we continue to screen patients at the front door and restrict visitors to one guest per patient.

Montage Medical Group, Outpatient Immunology Services (OPIS) Clinic

Get high-quality care from Montage Medical Group’s immunology team at our convenient clinic location near you in Monterey.

Directions and parking

From Highway 68, turn onto Ragsdale Drive. After the stop sign, take the next right to turn onto our driveway. Montage Medical Group, Ryan Ranch (Building A) is the large building closest to the street. You’ll see a sign with the Montage Medical Group logo and a large “A.” Park for free right in front of the building.

Finding our office

Check in with our reception staff when you enter Building A’s main level and get directions to the OPIS clinic.

Comfortable waiting area

Relax in our lobby before your appointment, where you can take advantage of guest Wi-Fi and charging stations. This office, like all Montage Health locations, is smoke-free.

Services at this location

You may visit the OPIS clinic for outpatient (daytime) appointments for infectious disease care, including management and specialized support for HIV.

Your first appointment

Please arrive early for your appointment to allow time for parking and check in, that way your doctor can see you as close to your scheduled appointment time as possible. Even if you use your MyChart account to check in at home, let our staff know when you arrive.

Plan to bring your current prescription and over-the-counter medications in their original containers or a detailed list of what you take. The list should include medication names, dosages, frequency (when and how often you take it), and the name of the prescribing physician.

Other nearby Montage Health services

Find out more about Montage Medical Group, Ryan Ranch, the home base for many Montage Medical Group providers, including family practitioners, psychiatrists, and rehabilitation therapists. Depending on your needs, you may visit nearby Ryan Ranch Outpatient Campus Building D for other services, such as an imaging scan or laboratory test.