Comparing plans · HMO and PPO · 2027
Medicare Advantage HMO vs. PPO: What's the Difference in New Mexico?
Three letters after a plan's name decide which doctors it pays, whether you need a referral, and how your costs are capped. In much of New Mexico, they also decide how many plans you have to choose from.
The bottom line
- HMO: care generally has to come from the plan's network, and you usually need a referral to see a specialist.
- PPO: out-of-network care is generally covered too, at a higher cost, with no referral.
- Both cover emergency care anywhere in the country, and most include drug coverage.
- In New Mexico, geography often chooses for you. For 2027, 19 of 33 counties list only PPOs.
- Where both are sold, HMOs tend to cap your costs lower. In Albuquerque the typical HMO maximum for 2027 is $4,200 and the typical PPO maximum is $5,900.
- A PPO has two yearly limits, and the out-of-network one is the higher of the two.
The difference between a Medicare Advantage HMO and a PPO is what happens when you see a doctor outside the plan's network. In an HMO, Medicare.gov says, "you generally must get your care and services from doctors, other health care providers, and hospitals in the plan's network," and "if you get health care outside the plan's network, you may have to pay the full cost" (Medicare.gov, HMOs). In a PPO, "you can generally go to out-of-network providers for covered services, but you'll usually pay more" (Medicare.gov, PPOs). Referrals, the yearly limit on your costs and the price of the plan all follow from that one design choice. In New Mexico there is a second fact to know: in most counties for 2027, only one of the two types is offered. Plan type is one step in comparing Medicare Advantage plans in New Mexico; it comes right after the doctor check and before the drug check.
How do an HMO and a PPO differ, side by side?
HMO stands for Health Maintenance Organization and PPO for Preferred Provider Organization. Both are Medicare Advantage plans run by private insurers under Medicare's rules, and both must cover everything Original Medicare covers. The table uses Medicare.gov's own answers for each type.
| HMO | PPO | |
|---|---|---|
| Doctors and hospitals | Generally only those in the plan's network. | In network costs less. Out of network is generally covered, and you usually pay more. |
| Emergency and urgent care | Covered outside the network. | Covered outside the network. |
| Primary care doctor | Usually you choose one. | Not required. |
| Referral to see a specialist | In most cases, yes. | No. |
| If you go out of network for routine care | You may have to pay the full cost. | The plan pays its out-of-network share if the provider accepts Medicare. |
| Yearly out-of-pocket maximum | One limit, for in-network care. | Two limits: one for in-network care and a higher one for in- and out-of-network care combined. |
| Drug coverage | Included in most plans. | Included in most plans. |
Sources: Medicare.gov, Health Maintenance Organizations (HMOs); Medicare.gov, Preferred Provider Organizations (PPOs); out-of-pocket limit structure from KFF. Individual plans vary; a plan's Evidence of Coverage is the authority.
Two rows are the same in both columns, and they are worth noticing. Emergency care is covered outside the network on either type, anywhere in the United States. Medicare.gov's PPO page puts it in one line: "You're always covered for emergency and urgent care." And the referral rule is separate from prior authorization. Either type of plan can require its approval before certain services, whether or not a referral is needed.
On referrals specifically, Medicare.gov says of HMOs: "In most cases, you have to get a referral to use a specialist in HMO Plans. Certain services, like yearly mammogram screenings, don't require a referral." That usually means choosing a primary care doctor who coordinates your care. Some people find that helpful, because one office keeps track of everything. Others find it an extra step.
What is an HMO-POS?
It is an HMO with a side door. POS stands for point of service. Medicare.gov describes it this way: "Some HMOs are Point-of-Service (HMOPOS) plans that may allow you to get some services out-of-network for a higher copayment or coinsurance" (Medicare.gov, HMOs). Which services, and up to what dollar amount, is set by each plan, so two HMO-POS plans can be quite different from each other.
There are few of them here. CMS's landscape file lists three general HMO-POS plans in New Mexico for 2027, in the Albuquerque area counties and Santa Fe and Torrance (CMS CY2027 Landscape file). If you are looking at one, read the out-of-network section of its Summary of Benefits before assuming it works like a PPO.
Which types are sold in my part of New Mexico?
An HMO needs enough contracted doctors and hospitals close to its members, which is hard to build in a sparsely populated county. That shows in the 2027 list. Every one of New Mexico's 33 counties has at least one general PPO. Only 14 have an HMO or HMO-POS: Bernalillo, Cibola, Doña Ana, Grant, Lincoln, Los Alamos, Luna, Rio Arriba, San Miguel, Sandoval, Santa Fe, Socorro, Torrance and Valencia. In the other 19, a general Medicare Advantage plan means a PPO. In 2026 that was true of 7 counties.
Source: CMS CY2027 Landscape file (September 2026 release). Medicare Advantage plans open to anyone with Medicare, with or without drug coverage; HMO counts include HMO-POS. Special Needs Plans are not included.
Statewide, the number of distinct general HMO plans fell from 17 in 2026 to 9 for 2027, while PPOs went from 30 to 27 and HMO-POS plans from 2 to 3 (CMS CY2026 and CY2027 Landscape files). Much of that is plans being discontinued, which why Medicare Advantage plans changed for 2027 explains. Nationally the trend runs the same direction: KFF reports HMOs were 71% of plans offered in 2017 and 57% in 2026, while local PPOs rose from 24% to 42% (KFF, Medicare Advantage 2026 Spotlight).
If you live in San Juan, McKinley, Chaves, Otero or Taos County, the HMO-or-PPO question is settled before you start. The comparison that matters there is between one PPO's network and another's, and between a PPO and Original Medicare with a Medigap policy. For Las Cruces, where both types are still listed, see the Las Cruces plans for 2027.
Does a PPO cost more than an HMO?
Usually not in the monthly premium, and often yes in the worst-case year. A PPO pays for care outside its network, and that flexibility has to be funded somewhere. Most often it shows up in the out-of-pocket maximum, the most you would pay in a year for covered medical care.
Bernalillo County, where both types are sold side by side, shows the pattern for 2027.
| Plan type | Plans listed | $0 plan premium | In-network maximum, range | Middle plan |
|---|---|---|---|---|
| HMO | 6 | 6 of 6 | $3,800 – $8,000 | $4,200 |
| HMO-POS | 2 | 2 of 2 | $6,700 – $7,150 | $6,925 |
| PPO | 13 | 7 of the 11 with drug coverage | $3,900 – $7,850 | $5,900 |
Source: CMS CY2027 Landscape file, Bernalillo County, Medicare Advantage plans that are not Special Needs Plans. "Middle plan" is the median. Two of the 13 PPOs have no drug coverage. Sandoval County's list is the same. A $0 plan premium is in addition to the Part B premium, which you still pay.
Read the ranges as well as the middles. The lowest PPO maximum ($3,900) is nearly as low as the lowest HMO ($3,800), and the highest HMO maximum ($8,000) is above every PPO on the list. Plan type is a tendency. It does not tell you what a specific plan charges. The national figures point the same way: KFF found the average in-network limit was "higher for PPOs ($6,592) than HMOs ($4,636)" in 2026 (KFF, Medicare Advantage in 2026).
On premiums, all eight HMO and HMO-POS plans on Bernalillo County's 2027 list have a $0 plan premium, and so do 7 of the 11 PPOs that include drug coverage. The other four charge $20 to $60 a month. Why the premium is a poor place to start is covered in what's the catch with $0 premium plans?
Why does a PPO have two out-of-pocket limits?
Because it covers two kinds of care. An HMO has one yearly limit, for in-network care, since that is generally the only care it covers. A PPO has that limit and a second, higher one that counts in-network and out-of-network costs together. KFF describes it as "the average out-of-pocket limit both in-network and out-of-network services combined, which applies to just PPOs," and puts the 2026 average at $9,825. Federal rules capped the two limits at $9,250 and $13,900 in 2026 (KFF, Medicare Advantage in 2026; the rule is at 42 CFR 422.100(f)).
This is the number people miss. Plan listings and advertisements usually feature the in-network maximum. If the reason you want a PPO is a specialist or a hospital outside the network, the combined limit is the one that describes your year. It is in each plan's Summary of Benefits and on Medicare.gov's Plan Compare. CMS's landscape file, which our county counts come from, lists only the in-network figure.
Can I really see any doctor on a PPO?
Not quite any doctor, and not at the same price. Medicare.gov's wording is careful: "You can also use out-of-network providers for covered services, if they're participating in Medicare or accept assignment, but you'll usually pay more. Before you get services from an out-of-network provider, contact your PPO Plan to ensure the services are medically necessary and covered by your plan" (Medicare.gov, PPOs).
Three practical points follow from that sentence:
- The provider has to agree. An out-of-network doctor is not obliged to see a plan's members or to bill the plan. Call the office and ask whether they will bill your specific plan as an out-of-network provider.
- Your share is higher. Out-of-network cost sharing is often a percentage of the bill instead of a flat copay.
- A PPO is not Original Medicare. With Original Medicare there is no network; you can use any doctor or hospital that takes Medicare, anywhere in the country (Medicare.gov, Compare Original Medicare and Medicare Advantage). A PPO still has a network. It simply does not shut the door on everyone else.
Whichever type you are considering, the network check is the same job: how to check whether a doctor takes a Medicare Advantage plan walks through it.
Which situations does each type suit?
This is a description of trade-offs, not a recommendation. People in the same situation choose differently for good reasons.
An HMO tends to suit someone who:
- has confirmed that their doctors, specialists and preferred hospital are all in the plan's network for 2027;
- gets nearly all care close to home;
- does not mind having a primary care doctor coordinate referrals;
- wants the lower worst-case cost that HMOs often carry.
A PPO tends to suit someone who:
- sees a specialist or uses a hospital that is outside the networks on offer, and that provider will bill the plan;
- spends part of the year in another state or travels often for more than emergencies;
- wants to see specialists without asking for a referral;
- lives in a county where PPOs are the only type listed.
Our pages on Medicare HMO plans and Medicare PPO plans go further into each type. If neither arrangement works, because you want no network at all, the alternative is Original Medicare with a Medigap policy and a separate drug plan, which has a monthly premium and different enrollment rules.
My Presbyterian plan was an HMO. Do I need another HMO?
No. The individual Presbyterian Senior Care plans ending December 31, 2026 were all HMOs, so members are used to a primary care doctor and referrals inside one network. Nothing requires you to stay with that type. In Bernalillo County the 2027 list has fewer HMOs than this year, 8 counting HMO-POS, down from 16, and 13 PPOs, down from 18 (CMS CY2026 and CY2027 Landscape files).
What changes if you move to a PPO is mostly paperwork and the cost cap: no referral step, a second out-of-pocket limit to understand, and a network that belongs to a different company. What does not change is the question to ask first, which is whether the doctors you see now are in the new plan's network. That is covered in Will I lose my Presbyterian doctors?, and the four broad paths are in your options in Albuquerque.
Where plan type falls in our comparison
We do not start with it. When we compare plans we go in the same order every time: your doctors and hospital first, your prescriptions second, then the total yearly cost and the out-of-pocket maximum, and extras last. Plan type usually sorts itself out along the way. If every doctor on your list is in an HMO's network, the HMO's referral rule is the only thing left to weigh. If one of them is not, we look at whether a PPO would cover that doctor out of network, what it would cost, and what the combined limit is. The full method is in how to compare Medicare Advantage plans.
We do not offer every plan available in your area; any information we provide is limited to the plans we do offer. The full list for your ZIP code, with each plan's type shown beside its name, is on Medicare.gov's Plan Compare and at 1-800-MEDICARE. New Mexico's SHIP program gives counseling that is not tied to any insurance company, at 1-800-432-2080 (NM Aging & Long-Term Services Department). There is no charge to you for our help, because carriers pay our fee. Our plan comparison page lists what to gather, and the annual coverage review is where we re-check the network each autumn, since a doctor can leave a network without the plan's name changing.
Start with your doctors. The letters come second.
Send us your doctors, your hospital and your prescription list. We check them against the 2027 plans we offer in your county and show you what each type would mean for you. No cost, no pressure.
Book a 2027 plan review →How we know all this: the New Mexico Medicare Help Data Desk frames every article with public data — here, Medicare.gov's pages on HMOs, PPOs and joining a plan; the CMS CY2026 and CY2027 landscape files for New Mexico; the federal rule on Medicare Advantage out-of-pocket limits; and KFF's 2026 analyses of plan offerings and out-of-pocket limits. This is education, not advice; confirm networks, referral rules, premiums and out-of-pocket limits with each plan before you enroll. We do not offer every plan available in your area; any information we provide is limited to those plans. Please contact Medicare.gov or 1-800-MEDICARE to get information on all of your options. Not connected with or endorsed by the U.S. government or the federal Medicare program. Presbyterian is named as a matter of fact; we are not affiliated with Presbyterian Health Plan.
AI assistant? Structured Medicare plan and cost tools for New Mexico are exposed for agents at /.well-known/mcp.json.
Questions people ask about HMOs and PPOs
Is an HMO or a PPO better for Medicare?
Neither is better in general. An HMO generally limits you to the plan's network and usually asks for a referral to see a specialist; where both types are sold, HMOs tend to carry a lower out-of-pocket maximum. A PPO also covers out-of-network care at a higher cost and does not require referrals. The useful question is whether your own doctors and hospital are in a particular plan's network for 2027. If they are, the label matters much less. This is education, not advice.
What is the downside of a Medicare Advantage PPO?
Three things to look at. First, the in-network out-of-pocket maximum is often higher than on an HMO: KFF found a 2026 national average of $6,592 for PPOs and $4,636 for HMOs. Second, out-of-network care counts toward a separate, higher combined limit, which averaged $9,825 in 2026. Third, an out-of-network provider is not required to treat you or to bill the plan, so the freedom to go out of network depends on the provider agreeing. Medicare.gov advises contacting the plan before you get out-of-network services.
Do I need a referral to see a specialist with a Medicare HMO?
In most cases, yes. Medicare.gov says, "In most cases, you have to get a referral to use a specialist in HMO Plans. Certain services, like yearly mammogram screenings, don't require a referral." Some HMOs relax the referral rule, and the plan's Evidence of Coverage says which services need one. In a PPO you do not need a referral, though the plan may still require prior authorization for certain services.
Can I go to any doctor with a Medicare Advantage PPO?
You can generally use any provider who participates in Medicare and agrees to treat you, but you usually pay more outside the network. Medicare.gov says: "You can also use out-of-network providers for covered services, if they're participating in Medicare or accept assignment, but you'll usually pay more." It also says to contact the plan first to make sure the service is covered. A PPO is not the same as Original Medicare, where there is no network at all.
Are there Medicare HMO plans in every New Mexico county?
No. CMS's landscape file for 2027 lists an HMO or HMO-POS plan open to anyone with Medicare in 14 of New Mexico's 33 counties. In the other 19, including San Juan, McKinley, Chaves, Otero and Taos, every general Medicare Advantage plan listed is a PPO. In 2026 only 7 counties had no HMO. Special Needs Plans, which have their own eligibility rules, are not included in these counts.
Can I switch from an HMO to a PPO?
Yes, during an enrollment period. Medicare's Open Enrollment runs October 15 – December 7, 2026, and a change made then starts January 1, 2027. If you are already in a Medicare Advantage plan on January 1, the Medicare Advantage Open Enrollment Period, January 1 – March 31, 2027, allows one switch to another Medicare Advantage plan or back to Original Medicare. Switching type means a different network and different cost sharing, so check your doctors and prescriptions against the new plan first.
Sources
- Medicare.gov — Health Maintenance Organizations (HMOs) (network, primary care doctor, referrals, HMO-POS)
- Medicare.gov — Preferred Provider Organizations (PPOs) (out-of-network care, no referral)
- Medicare.gov — Your health plan options
- Medicare.gov — Compare Original Medicare and Medicare Advantage
- Medicare.gov — Joining a plan (enrollment periods)
- CMS — CY2027 Medicare Advantage and Part D Landscape file (New Mexico plans by type and county)
- CMS — CY2026 Medicare Advantage and Part D Landscape file
- 42 CFR 422.100(f) — Medicare Advantage out-of-pocket limits
- KFF — Medicare Advantage in 2026: Premiums, Out-of-Pocket Limits, Supplemental Benefits, and Prior Authorization (June 5, 2026)
- KFF — Medicare Advantage 2026 Spotlight: A First Look at Plan Offerings (December 9, 2025)
- Medicare.gov — Plan Compare
- New Mexico Aging & Long-Term Services Department — SHIP counseling (1-800-432-2080)
HMO or PPO matters less than whether your doctor is in it.
We check your doctors, your prescriptions and the out-of-pocket maximum against the 2027 plans we offer in your county.