Does Medicare cover dermatology in Peoria, AZ?

Yes, Medicare covers dermatology when there is a medical reason for the visit. Part B pays for a dermatologist to evaluate a spot that is new, changing or not healing, to biopsy it, and to treat skin cancer and precancerous lesions. After the $283 Part B deductible you pay 20% of the Medicare-approved amount. What Medicare does not cover is a routine full-body skin check with nothing specific to look at, and it does not cover cosmetic work. Almost every dermatology billing surprise I hear about comes from the gap between those two sentences.

This is not an abstract question in Peoria. The Arizona Department of Health Services counts melanoma as the fourth most common cancer diagnosis in the state, with an average of 2,962 new invasive cases a year, and says Arizona ranks among the states with the highest melanoma rates in the country. Add the far more common basal cell and squamous cell cancers, and a dermatologist is a routine part of life for a great many households in Vistancia, Trilogy and Westbrook Village, whether they have been in the desert for thirty years or arrived two winters ago with a lifetime of Midwest lake summers already on their shoulders.

What Medicare covers at the dermatologist

Dermatology is not a separate benefit. It falls under Part B’s coverage of “medically necessary doctor services,” and the test for every line below is whether there is a medical reason behind it.

Source: Medicare.gov, "Doctor and other health care provider services," "Preventive and screening services" and "Cosmetic surgery"; CMS National Coverage Determination 250.4. A Medicare Advantage plan must cover everything Original Medicare covers, at its own copays and inside its own network.

Two of those lines deserve a second look, because they are the Arizona ones.

Actinic keratoses. These are the rough, scaly patches that years of sun leave on forearms, scalps and the tops of ears, and some of them turn into squamous cell cancer. CMS settled the question years ago with a national rule that reads, in full: “Medicare covers the destruction of actinic keratoses without restrictions based on lesion or patient characteristics.” Freezing them, treating them with a prescription cream or removing them another way is covered care, not cosmetic care. If a cream is prescribed, that part runs through your Part D drug plan rather than Part B.

Follow-up after skin cancer. Once you have had a melanoma, a basal cell or a squamous cell cancer, the regular skin exams that follow are surveillance of a diagnosed condition. They are not the “routine screening” Medicare leaves out. A large share of the people asking me this question are already in this group and do not realize the distinction works in their favor.

Why the routine skin check is the exception

Medicare’s $0 preventive list is long. It includes mammograms, colonoscopies, lung cancer screening for long-term smokers and a dozen more. A skin cancer screening is not on it, and the reason is procedural rather than a judgment about your skin. Medicare adds preventive screenings largely on the strength of U.S. Preventive Services Task Force recommendations, and in April 2023 the Task Force concluded that “the current evidence is insufficient to assess the balance of benefits and harms of visual skin examination by a clinician to screen for skin cancer in adolescents and adults.” No recommendation, no preventive benefit.

So the claim turns on why you are in the chair. A visit booked because a mole on your back has changed shape is a diagnostic visit, and Part B covers it. A visit booked as “my yearly skin check” by someone with no symptoms and no history may be treated as routine, and a practice that expects Medicare to deny it may ask you to sign an Advance Beneficiary Notice accepting the bill. A Medicare Supplement does not rescue you there. Plan G pays the 20% on services Medicare covers; it cannot turn a service Medicare does not cover into one it does.

The practical advice is not to game the wording. It is to tell the scheduler the truth in useful detail. “I have a spot on my forearm that has gotten darker since spring and I have had two basal cells removed” books a very different appointment from “I’d like my annual check,” and for most people over 65 in this climate the first sentence is the accurate one. The yearly wellness visit does not fill the gap either, since it is a conversation and a few measurements and does not include a skin exam.

One appointment, three bills

A dermatology visit that finds something tends to arrive in the mail in pieces:

1. The office visit. The dermatologist’s evaluation.
2. The procedure. A biopsy, a freezing treatment or a small excision done the same day is billed as its own service.
3. The pathology. The tissue goes to a lab, and the pathologist who reads it bills separately, sometimes from a company name you have never seen.

On Original Medicare, each is a Part B service at the approved amount, and with a Medicare Supplement Plan G you owe nothing beyond the annual deductible across all three. Plan N works the same way apart from its office-visit copay, which I covered in the Plan G versus Plan N comparison. On a Medicare Advantage plan, the visit is a specialist copay, the procedure may carry its own cost-sharing, and the pathology is cheapest when the lab is in network, which is the practice’s job to arrange and worth one question at checkout.

If the biopsy comes back as a cancer that needs Mohs surgery, that is a second, larger outpatient claim. It is covered, and any repair needed to close the wound is part of the treatment rather than cosmetic surgery. On Medicare Advantage, ask the plan what the outpatient surgery cost-sharing is before the date is set, and remember that all of it counts toward the plan’s annual out-of-pocket maximum.

What Medicare Advantage changes

A Medicare Advantage plan has to cover every dermatology service Original Medicare covers. Three things work differently.

Referrals. Original Medicare never requires one. Many HMO plans in Maricopa County do, and a dermatology visit booked without the referral on file can be denied outright even though the care itself is covered. I went through how this works, and how to tell which kind of plan you have, in the referral post.

Networks. North Peoria households mostly see dermatologists along Lake Pleasant Parkway and the Happy Valley corridor, at Arrowhead, or in Sun City, where several practices are built almost entirely around Medicare patients. Dermatology groups here tend to run many locations, and groups get bought and merged regularly. Being in network is decided plan by plan, and sometimes office by office, so check the location you will actually drive to. On the Peoria–Glendale–Sun City seam, the office a mile away can sit on the other side of a contract line. The networks explainer covers how to check properly, and what to do when a doctor leaves your network covers the mid-year version of the same problem.

Extras. Some plans cover a routine skin exam as a supplemental benefit or simply apply the specialist copay without asking why you came. That is plan-specific, it is in the Evidence of Coverage, and it can change from one year to the next.

Why this matters more in north Peoria

The new arrivals. The 85383 corridor is full of households who moved here in the last few years. If that is you, two things are true at once. You need to establish with an Arizona dermatologist, because the sun here is a different order of exposure. And if you came on a Medicare Advantage plan from another state, the plan itself probably had to change, so the dermatologist question is really a network question about a plan you may have picked in a hurry.

The seasonal residents. Trilogy and Westbrook Village both hold people who spend the summer somewhere cooler. A biopsy in March with a follow-up due in July is a small illustration of a large decision. On Original Medicare with a Supplement, the follow-up can happen with any dermatologist in the country who accepts Medicare. On most Advantage plans, routine specialist care outside the Arizona network is not covered, so the appointment waits until October. That is the same trade-off behind the bigger Advantage versus Supplement question for a household that splits the year.

The long-timers. In 85345 and Westbrook Village I more often talk to people who have seen the same dermatologist every six months for fifteen years. For them the only question that matters at plan-change time is whether that doctor, at that office, stays in network, and it deserves a phone call rather than an assumption.

Medicare in Peoria and Medicare in Glendale have the local picture on each side of the seam.

What to ask before you book

1. When you call the practice: “I have a specific concern I’d like looked at.” Then say what it is, and mention any skin cancer history. That is what makes the visit diagnostic, and it is also what gets you seen sooner.
2. “Do you accept Medicare assignment?” On Original Medicare, this keeps the bill at the Medicare-approved amount.
3. On Medicare Advantage: “Do I need a referral, and is this office location in my plan’s network?” Ask the plan, not only the practice.
4. “If you biopsy something, which lab reads it?” On a network plan, you want the lab in network too.
5. “Is any of this cosmetic?” If the dermatologist offers to take off a few harmless growths while you are there, ask what it costs before saying yes. Medicare.gov’s line on cosmetic work is that “you usually pay all costs.”

What to check before December 7

The Annual Enrollment Period runs October 15 to December 7, and if a dermatologist is one of the doctors you see most, put that name on the list of things to verify.

• Confirm your dermatologist is in network for 2027 by name and location. Directories lag behind contract changes.
• Read the specialist copay and the outpatient surgery cost-sharing on your Annual Notice of Change. Someone seen every six months, with a procedure most years, feels those two numbers more than the premium.
• Check whether your plan requires referrals, and whether that is changing.
• If you are away part of the year, weigh how often follow-up care has landed in the months you were gone.

The short version

• Medicare covers dermatology when it is medically necessary. A spot of concern, a rash, a biopsy, skin cancer treatment including Mohs surgery, and follow-up after a prior skin cancer are all Part B services.
• You pay 20% after the $283 deductible on Original Medicare, and a Supplement such as Plan G covers the 20%. Medicare Advantage plans charge their own specialist and surgery copays.
• Precancerous actinic keratoses are covered under a national rule with no restrictions on the lesion or the patient.
• A routine full-body skin check with no symptoms and no history is not a covered preventive service, because the Task Force has not recommended it. You may owe the whole charge.
• Cosmetic work is not covered. Harmless growths removed for appearance are yours to pay for.
• Original Medicare needs no referral. Many Advantage HMOs do, and the dermatologist, the office location and ideally the pathology lab should all be in network.
• Expect separate bills for the visit, the procedure and the pathology.

If you would rather have someone check it for you

Whether Medicare covers the dermatologist is the easy half. Whether your plan reaches the dermatologist you want, at the office you would drive to, in the months you are actually in Arizona, is the half that takes a few phone calls, and it is worth settling before the 2027 plans open on October 15. None of this is medical advice. If a spot is changing, book the appointment first and sort out the billing second.

The office is in Anthem, roughly 25 minutes from north Peoria out the Carefree Highway and down Lake Pleasant Parkway, and most of this happens by phone anyway. Call (602) 844-6002 or book a time — and if you call or text, that is your consent for me to reply the same way.