When to See a Dermatologist in St. Louis, and How to Get an Appointment
Revised August 19, 2026
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Keep reading ↓Imagine it’s a Sunday morning in Kirkwood and the patch on the back of your arm is still there. It turned up sometime around Memorial Day. You tried the drugstore cream. Then you tried the other drugstore cream, the one your sister swore by. It faded for a week and came back.
Or maybe it isn’t you at all. Maybe it’s your kid in Florissant whose acne stopped responding to everything on the shelf, and now they won’t take a photo. Maybe it’s your dad in Belleville, who has said “after the holidays” about the spot on his ear for two sets of holidays running.
Here’s the honest part: the hard thing usually isn’t the skin. It’s not knowing whether this is a doctor problem or a wait-and-see problem, whether your insurance wants a referral first, how long the wait will be, and what lands on your credit card afterward. This walks through all four — what a dermatologist actually handles, how referrals work on the Missouri side and the Illinois side, what happens at a first visit, and what to do if money is the thing standing in the way.
How do you know if you need a dermatologist?
You need a dermatologist when something on your skin, hair, or nails is changing, isn’t clearing up, hurts, or has started running your daily life — and when you can no longer answer the question yourself. That last clause is the real trigger. The moment you find yourself searching for reassurance instead of an appointment, the appointment is the answer.
Nobody should be diagnosing themselves from a phone, and this article won’t teach you to. Skin is genuinely hard to read, which is exactly why the training runs four years past medical school. What you can do is describe the situation out loud to a clinician and let them decide whether it needs a specialist.
Two doors get you there. You can call a dermatology practice directly, which works for many plans. Or you can start with your primary care doctor, which is often faster and sometimes required — primary care handles an enormous amount of skin, and if it needs to go further, that visit becomes the referral. If you have no primary care doctor and no insurance, skip ahead to the section on cost; there is a real path there.
What do dermatologists actually treat?
Dermatologists treat conditions of the skin, hair, nails, and the mucous membranes of the mouth, nose, and eyelids. In practice that covers acne, eczema, psoriasis, rosacea, hair loss, nail disease, chronic hives, skin infections, and skin cancer — plus a long tail of rarer conditions most people have never heard of until they have one.
The training is longer than most patients assume. A dermatologist finishes medical school, then a year of broad clinical internship, then a three-year dermatology residency, and only then sits for certification with the American Board of Dermatology. Some go further. The American Board of Dermatology recognizes three subspecialty certifications on top of the primary one: dermatopathology, pediatric dermatology, and micrographic dermatologic surgery.
Those three matter to you in ordinary ways. A dermatopathologist is the physician reading your biopsy slide under a microscope, which is why a biopsy can generate a second bill from a lab you never visited. Pediatric dermatology exists because a rash on a four-year-old is not a small version of the same rash on a forty-year-old. And micrographic surgery — Mohs — is the technique used for certain skin cancers in places where every millimeter of tissue counts, like an eyelid or the side of a nose.
What is the difference between medical and cosmetic dermatology?
Medical dermatology diagnoses and treats a condition, and it is generally billed to your health insurance. Cosmetic dermatology changes how something looks when nothing is medically wrong, and it is generally not covered — you pay out of pocket. Same physician, sometimes the same room, completely different financial machinery.
Medicare draws the line plainly. Part B covers medically necessary evaluation and treatment of skin conditions, and you pay the standard 20 percent coinsurance on the approved amount after your deductible. Cosmetic procedures are excluded. Commercial plans follow the same logic, with their own definitions of medically necessary buried in the plan documents.
This is where bills go sideways. If you book a cosmetic consultation and then ask the doctor about something that’s been bothering you, the visit can become a medical one, or you can end up with charges under both headings. Say which you’re coming in for when you schedule. If the answer is honestly both, say that too, and ask the front desk how it will be billed before anyone touches anything.
Do you need a referral to see a dermatologist in Missouri or Illinois?
It depends on your plan, not on which side of the river you live on. HMO plans typically require a referral from your primary care doctor before they’ll cover a specialist. PPO plans typically don’t. Original Medicare doesn’t require a referral for a dermatologist, though a Medicare Advantage plan may. The card in your wallet decides this, not the state.
On the Missouri side, the state’s myDSS guidance for MO HealthNet is direct about it: fee-for-service MO HealthNet does not require a referral, but the provider may ask for one anyway, and managed care members should check with their primary care provider or their health plan, because rules differ by plan. Two of the state’s managed care plans, UnitedHealthcare Community Plan and Healthy Blue Missouri, both publish that members may see in-network providers without a referral. In Illinois, if you’re in a HealthChoice Illinois managed care plan, the referral rule is set by your plan — call the member services number printed on the card and ask before you book.
Two more things worth knowing. Plenty of dermatology offices request notes from your primary care doctor even when your insurer doesn’t require a referral, simply because it speeds up the visit. And some prescription treatments, particularly the injectable biologics used for severe psoriasis and eczema, need prior authorization from the insurer before the pharmacy will fill them — that’s a separate process from the referral, and it takes its own time. The same referral question comes up with eye care, and the answer works the same way; there’s a companion piece on when to see an ophthalmologist in St. Louis if that’s also on your list.
Wildly off-topic — the fridge quit the same week. Appliance help.
What happens at a first dermatology appointment?
A first dermatology visit is short, structured, and less dramatic than people expect. You fill out intake covering medications, allergies, past sun exposure, and family history. The physician examines what you came in for, often with a dermatoscope — a lighted magnifier held against the skin. Photographs may be taken for comparison later. You leave with a plan, a prescription, a referral, or a wait for lab results.
If a biopsy is warranted, it usually happens that day rather than at a second appointment. The sample goes to a dermatopathologist, and results typically come back within a week or two depending on the lab. Ask before you leave how you’ll be told the result and what happens if you don’t hear anything — a result that never reaches you is the most common failure point in the whole sequence.
Book earlier than feels necessary. AMN Healthcare’s survey of physician appointment wait times, released May 27, 2025, found the average wait for a new-patient dermatology appointment across 15 major metro markets was 36.5 days, up 6 percent since 2022 and up 50 percent since 2004, with individual waits running from one day to 291. When you call, ask two questions: what’s the first available, and is there a cancellation list. The second question moves people up by weeks.
Bring your questions written down. Dermatology visits move fast, and the thing you meant to mention is the thing you’ll remember in the parking lot.
What does a dermatologist visit cost around St. Louis?
There is no single St. Louis price, and any article that gives you one is guessing. What you can do is get the real number in writing before you go. Since January 1, 2022, federal law says that if you’re uninsured or choosing not to use your insurance, the provider must give you a “good faith estimate” of expected charges when you schedule care or when you call and ask for one.
That estimate has teeth. If the final bill comes in at least $400 above the good faith estimate and you received it within the last 120 calendar days, you can use the federal patient-provider dispute resolution process, which sends the estimate and the bill to a third-party arbitrator. Most people never hear about this. Ask for the estimate anyway — it is the single most useful thing an uninsured patient can do before a specialist visit.
Three things drive what you actually pay. The visit level, which depends on how complicated the problem is. Any procedure done that day, which is billed on top of the office visit rather than folded into it. And pathology, which is frequently billed separately by an outside lab, so a single appointment can generate two envelopes. When you call to schedule, ask the office-visit charge, ask whether pathology bills separately, and ask whether they are in network for your specific plan — not just “do you take” the insurance company’s name.
What if you cannot afford a dermatologist?
Start with a federally qualified health center. Health centers funded through the federal Health Resources and Services Administration are required to run a sliding fee discount program, so charges are scaled to your income and household size, and you do not need insurance to be seen. The federal locator at findahealthcenter.hrsa.gov lists sites on both sides of the metro. Health center clinicians handle a large volume of skin complaints and can refer onward when something needs a specialist.
Free skin cancer checks are a second route. The American Academy of Dermatology has run volunteer-staffed free checks since 1985 — the Academy reports more than 2.9 million free checks, more than 293,000 suspicious lesions found, and roughly 33,700 suspected melanomas over the life of the program — and its site has a locator for upcoming events, which cluster around May. These are limited in scope and event-based, not a replacement for ongoing care, but they are genuinely free.
Beyond that: ask any practice directly whether they offer a self-pay discount or a payment plan, and ask before the visit rather than after the bill. Academic medical centers often run resident clinics at lower cost. Dialing 211 connects you to United Way’s local referral line for health and social services in the region. And if the underlying problem is that you have no coverage at all, that is a fixable problem with its own steps — see the companion piece on how to get health insurance in Missouri.
How do you check that a dermatologist is board certified?
Two free checks, about two minutes each. First the license: Missouri physicians are searchable through the Missouri Division of Professional Registration at pr.mo.gov, under the Board of Registration for the Healing Arts. Illinois physicians are searchable through the Illinois Department of Financial and Professional Regulation’s License Lookup, which the Joint Commission and NCQA accept for primary source verification, and IDFPR also publishes a separate Physician Profile search.
Second, the board certification itself, which is a different thing from a license. Certification in dermatology comes from the American Board of Dermatology, an ABMS member board, and the ABMS runs a public verification tool. The Federation of State Medical Boards operates docinfo.org, which pulls license and disciplinary history across all states in one search — useful if a physician has practiced in more than one place.
One nuance worth carrying with you. “Board certified” on its own doesn’t say in what. Cosmetic skin procedures are performed by clinicians from several different specialties, which is lawful and can be entirely appropriate. If it matters to you which training sits behind the hands doing the work, just ask which board and in which specialty. It is a normal question and a good office answers it without flinching.
What this looks like from the other side of the counter
If you run a dermatology practice, you are really running two businesses that share a waiting room. The medical side is reimbursed on fee schedules you don’t set, arrives with prior authorizations and denials attached, and pays months after the work. The cosmetic side collects at the counter the same afternoon. That contrast, not vanity, is why so many medical practices carry an aesthetics line at all — it is what makes the cash flow survivable. The seasonality follows it: resurfacing and laser work concentrate in the cooler months because of the sun-avoidance instructions afterward, and the fourth quarter brings the flexible-spending rush. Meanwhile the thing dermatologists talk about with each other is ownership. Dermatology has among the highest private equity penetration of any specialty; a JAMA Dermatology analysis counted 184 practices acquired by private-equity-backed groups between 2012 and 2018 alone. Independent practices compete against that, and the way patients find them is a local search. Being listed, complete, and accurate on St Louis Near Me Directory is part of showing up in that search.
Done putting it off? Browse dermatologists across the St. Louis metro on St Louis Near Me Directory, then call two offices this week and ask all three questions: first available appointment, whether your plan needs a referral, and what the visit will be billed as.
Frequently asked questions
Can I see a dermatologist without a referral?
Often yes, but your plan decides. PPO plans generally let you book a specialist directly. HMO plans generally require a referral from your primary care doctor first, and going without one can leave the visit uncovered. Original Medicare doesn’t require a referral; Medicare Advantage may. MO HealthNet fee-for-service doesn’t require one, though managed care rules vary by plan. Call the number on your card and confirm before you schedule.
How much do dermatologists charge per visit?
It varies by practice, by how complicated your problem is, and by what gets done that day, so no honest single figure exists for the metro. Get the number from the office instead of an article. If you’re uninsured or paying cash, federal law entitles you to a written good faith estimate of expected charges when you schedule or when you ask for one.
Why is a dermatologist so expensive?
Three things stack up. The office visit itself is priced by complexity. Any procedure done during that visit — a biopsy, a removal, a freeze — is billed on top of the visit rather than included in it. And laboratory work is often billed separately by an outside pathology group, so one appointment can produce two bills from two organizations. Cosmetic services add a fourth layer, since insurance generally excludes them.
What are the four types of dermatologists?
The popular grouping is medical, surgical, cosmetic, and dermatopathology. Formally it works differently: dermatology is one primary specialty, and the American Board of Dermatology recognizes three subspecialty certifications beyond it — dermatopathology, pediatric dermatology, and micrographic dermatologic surgery. Most dermatologists practice general medical dermatology and may also offer cosmetic services without holding a separate certificate for it.
What is the 2 week rule for dermatology?
That rule is British, not American. Under the NHS in England, a GP who suspects certain skin cancers refers a patient on the urgent suspected cancer pathway, and the patient should be seen within two weeks. There is no equivalent statutory timeline in the United States. If a clinician here says something needs to be looked at urgently, ask directly how soon and who arranges it.
What not to do before seeing a dermatologist?
Practical, not medical: skip makeup if the visit concerns your face, skip nail polish if it concerns your nails, and don’t treat or cover the exact thing you want examined right before the appointment. Bring the actual products and prescriptions you’ve been using, in their containers if you can. Write your questions down. Ask the office when you book whether they want anything specific.
What are the most common things dermatologists treat?
Acne, eczema, psoriasis, rosacea, and skin cancer make up a large share of the schedule, along with hair loss, nail disorders, chronic hives, warts, and skin infections. The specialty covers skin, hair, nails, and the mucous membranes of the mouth, nose, and eyelids, so the range is wider than most people picture when they think of dermatology as a cosmetic field.
Is it possible to see a dermatologist for free?
Sometimes, at events. The American Academy of Dermatology has organized volunteer-staffed free skin cancer checks since 1985 and lists upcoming ones through a locator on its site, with most clustered around May. Those are limited in scope. For ongoing care without insurance, a federally qualified health center is the more durable option, since federal rules require a sliding fee scale tied to income and household size.
How do I know if a dermatologist is good?
Start with the verifiable part. Confirm an active license through Missouri’s Division of Professional Registration or the Illinois IDFPR License Lookup, then confirm board certification in dermatology specifically through the American Board of Dermatology or ABMS. After that, judge the office: whether they explain what they’re billing, whether they tell you how results will reach you, and whether they answer questions without rushing you.
None of this is medical advice, and nothing here is a substitute for a clinician putting eyes on the actual problem. If something on your skin is changing, painful, or simply won’t leave, the next step isn’t more reading. It’s a phone call — to your primary care doctor, to a dermatology office, or to a health center that will see you regardless of coverage.
Written by a dedicated team of St. Louis locals who live, work, and play right here in the St. Louis metro. Founder Lane Forman and team are committed to building the region’s most trusted directory by verifying listings and connecting local businesses with loyal customers across Missouri and Illinois.