Last reviewed September 21, 2026.
Your Doctors May Be in Different Cities
You might see your regular doctor in Monrovia and Duarte, visit a specialist in a neighboring city, and go to a hospital somewhere else. Before choosing a Medicare Advantage plan, check whether the specific doctors and hospitals you want to use are included.
A hospital's name or an insurance company's name alone is not enough to confirm coverage. The answer depends on your exact plan and the doctor or hospital.
If you are in treatment at City of Hope, check the specialist, the drug, and the Duarte campus before you look at a lower premium. A missing referral or a drug that is not covered is the risk.
Nearby city guides: Arcadia, Sierra Madre.
What Is a Medical Group, and Why Does It Matter?
Some Medicare Advantage plans organize care through a medical group or doctor network. A medical group is a set of doctors who work together. That group may help arrange specialist visits and decide which hospital you use.
Ask your doctor's office which medical group your doctor belongs to and whether the group works with the exact plan you are considering. If you need a specialist, ask whether you need a referral or approval first.
A doctor who accepts Medicare does not necessarily accept every Medicare Advantage plan. Original Medicare does not use these medical-group lists the same way. A Medicare Advantage PPO may pay part of a visit to a doctor outside the list, but that does not mean every doctor is covered or that the visit will be inexpensive.
Medical groups and doctor networks near Monrovia and Duarte
These are examples of medical groups that serve parts of the area. Your doctor may or may not belong to one of them. Call your doctor's office to confirm the medical group and ask which Medicare Advantage plans the doctor accepts. Then confirm the details with the insurance plan.
- Allied Pacific of California IPA. An IPA in the San Gabriel Valley. The doctor’s office may name Allied Pacific as the group that lines up its doctors.
- Optum Care Network–San Gabriel Valley. Optum’s medical group for the San Gabriel Valley. It is not the same list as Optum Care Network–Los Angeles.
Broader medical groups also show up in Monrovia and Duarte: Regal Medical Group, HealthCare Partners Medical Group (Optum), and Optum Care Network–Los Angeles. A countywide medical group is still not your doctor’s group until the office says so.
- DoctorYour doctor
- Medical groupThe medical group
- HospitalThe hospital
With some Medicare Advantage plans, your medical group helps arrange referrals to specialists and hospitals. The process depends on your plan. Ask your doctor's office who handles referrals and whether you need approval before seeing a specialist. Your Medicare plan and your medical group has the longer explanation.
Check the Hospital You Want to Use
Think about where you would want to go for a planned procedure, specialist treatment, or hospital stay. Check that hospital against your plan, along with the doctors who would treat you there.
A hospital may belong to a larger health system, but that does not automatically mean every doctor or location in the system accepts your plan.
These are hospitals people in Monrovia and Duarte use. A name here is not a statement that any plan covers that hospital.
- City of Hope National Medical Center. 1500 EDuarte Road, Duarte, CA 91010. The published appointment line is (877) 460-4673. Continuity of the named oncologist and the infusion site matters more than extras.
- USC Arcadia Hospital and Huntington HealthUSC Arcadia is 300 W. Huntington Drive, Arcadia, (626) 898-8000. Huntington is 100 W. California Boulevard, Pasadena, (626) 397-5000. Nearby acute care many households already use.
- Monrovia Health CenterLos Angeles County public health clinic at 330 W. Maple Avenue, Monrovia, CA 91016, (626) 256-1600. It is not a hospital and not a Medicare plan.
- Los Angeles County Department of Health Services’ Monrovia Health Center, for qualifying county healthcare services.
- Local primary-care practices and regional groupsReferrals and hospital alignment can depend on the primary doctor’s medical group.
Look Beyond the Monthly Premium
A plan with a low monthly premium may still have costs when you visit a doctor, see a specialist, receive outpatient treatment, or stay in a hospital.
Before enrolling, compare the monthly premium, copayments, deductibles, prescription costs, and the maximum you could pay for covered medical services in a year. A copayment is what you pay at the visit. A deductible is what you pay before the plan starts sharing the cost. Also check whether your regular prescriptions are covered.
The right comparison depends on how you use healthcare—not just on which plan advertises the lowest premium.
Four Questions to Ask Before Changing Plans
Write down the answers and confirm important details with the insurance company. If you want help understanding your options, talk with Alan.
- Does my doctor accept this exact plan at the office I visit?
- Which medical group does my doctor belong to, and will I need referrals?
- Can I use my preferred hospital and specialists?
- What will I pay for my regular visits, prescriptions, and other care?
Active-treatment checklist
Before any change, verify:
- The named physician and facility.
- Infusion, radiation, lab, and imaging locations.
- Whether each drug is billed under Part B or Part D.
- prior approval rules and the out-of-pocket maximum.
- Continuity-of-care rights if you are mid-treatment.
An example in Monrovia and Duarte
This is an example of what to check. It does not mean any doctor or hospital accepts a particular plan.
You get cancer care at City of Hope, and your spouse gets routine care in Monrovia. You share an address. You may not need the same coverage. Talk with Alan if you want to walk through both.
Senior and public resources
Resource links are provided for convenience. Medisure Agency is not affiliated with the listed organizations. Transit context is not a substitute for non-emergency medical transportation eligibility.
- Duarte Senior Center and Duarte transitcityofduarte.ca.gov
- Monrovia Community Center older-adult programsmonroviaca.gov
- Monrovia Transit / Dial-A-Ride
- Metro A Line Duarte/City of Hope station and Foothill Transit (transportation context only)
- HICAP 1-800-434-0222 · County Aging 800-510-2020 · Medicare.gov · TTY 711
- Rides in Los Angeles County
- Help paying Medicare costs
- Medicare, HICAP, and Social Security
- Caregiving
Your healthcare resource map
The map shows hospitals and medical groups around Monrovia and Duarte. Add the doctor, hospital, and medical group you want to keep. A name here is not proof that a plan covers them.
City Hospital Health system Medical group ACCESS Senior help
Your focus
Monrovia and Duarte
This page is about Medicare decisions in Monrovia and Duarte. Nearby names only help if your coverage pays those doctors and hospitals.
Medicare in Monrovia and DuarteAround Monrovia and Duarte
Communities
Cities drawn on this map, then the rest of San Gabriel Valley.
- Monrovia and DuarteHere
- Arcadia
- Sierra Madre
- Temple City
- Pasadena
- El Monte
Also in San Gabriel Valley
Hospitals and health systems are not the same thing
A hospital is a specific facility where you receive care. A health system may operate several hospitals and medical facilities. Check the exact location you want to use because coverage at one location does not automatically mean coverage at every location in the system.
Health systems
Hospitals
Medical groups and doctor networks near Monrovia and Duarte
These are examples of medical groups that serve parts of the area. Your doctor may or may not belong to one of them. Call your doctor's office to confirm the medical group and ask which Medicare Advantage plans the doctor accepts. Then confirm the details with the insurance plan.
Doctor groups and networks that help manage your care
- Allied Pacific of California IPAIPA · San Gabriel ValleyAn IPA in the San Gabriel Valley. The doctor’s office may name Allied Pacific as the group that lines up its doctors.On many HMO plans, Allied Pacific lines up the doctors and is paid a set amount to manage that care. Your plan can keep referrals instead. Ask.
- Optum Care Network–San Gabriel ValleyMedical group · San Gabriel ValleyOptum’s medical group for the San Gabriel Valley. It is not the same list as Optum Care Network–Los Angeles.On many San Gabriel Valley HMO plans, this Optum group handles the referral, the approval before a visit, and much of the paperwork. Your plan can be different.
Broader names
- Regal Medical GroupMedical group · San Gabriel Valley · San Fernando Valley · north Los AngelesA large medical group. Offices use this name across the San Gabriel Valley, the San Fernando Valley, and north Los Angeles.On many HMO plans, you call Regal for a referral and for approval before a visit. Some plans keep that job. Ask which one you have.
- HealthCare Partners Medical Group (Optum)Medical group · Los Angeles CountyThe older HealthCare Partners name is now used inside Optum. Ask the office which name is on your card.On many HMO plans, this group handles the referral and the approval before a visit. If the card says Optum, use the name the office confirms.
- Optum Care Network–Los AngelesMedical group · Los Angeles CountyOptum’s countywide Los Angeles medical group. A doctor in the San Gabriel Valley network is not automatically in this one.On many countywide Los Angeles HMO plans, this Optum group handles the referral, the approval before a visit, and much of the paperwork. It is a different list from the San Gabriel Valley Optum group.
Checked September 21, 2026.
Where to ask
These offices explain Medicare. They do not enroll you in a plan.
Questions people ask in Monrovia and Duarte
How do I verify City of Hope under a Medicare plan?
Ask the treating physician’s office which plans they take this year at that location, then check those plans on Medicare.gov. A hospital campus only helps if your coverage pays that doctor and that site.
Could changing plans interrupt active cancer treatment?
It can, if the physician, facility, or drugs are not covered the same way. Verify continuity-of-care rules before you change. This site cannot authorize treatment.
Are cancer drugs covered under Part B or Part D?
It depends on how the drug is administered and billed. Some infusion drugs are Part B; many oral drugs are Part D. Ask the oncology pharmacy and confirm with the plan.
Does a transportation benefit cover recurring treatment trips?
Advertised rides often have trip, distance, authorization, and destination limits. Read the plan materials. County Dial-A-Ride and Access are separate programs.