Anxiety, low mood, poor sleep, and burnout often emerge in primary care long before a specialist ever gets involved. Dr. Marshall provides thoughtful, unhurried support — helping you understand what’s contributing, what options are available, and what the right next step looks like for you.
This is not a substitute for emergency or crisis care. If you are in crisis or having thoughts of harming yourself or others, call 911 or contact the 988 Suicide & Crisis Lifeline by calling or texting 988.
Mild to moderate anxiety, depression, stress overload, burnout, poor sleep, and insomnia symptoms that deserve medical attention — particularly for people who feel not quite like themselves but aren’t yet sure where to turn.
What this covers
Medical evaluation, medication review when appropriate, personalized sleep strategy, screening for physical contributors, and care coordination with therapists or psychiatrists when the right next step is a specialist.
Dr. Marshall evaluates mental health and sleep within your full medical picture — hormones, medications, metabolic health, and lifestyle — rather than treating each symptom in isolation. When a specialist is needed, the referral is coordinated, not just suggested.
Anxiety and low mood often arrive quietly — trouble sleeping, irritability, a vague sense that things feel harder than they should. Most people wait. They tell themselves it’s just stress. That they’ll push through. That it’ll pass.
Sometimes it does. Often it doesn’t — and by the time someone reaches out, months or years of disrupted sleep, elevated cortisol, rising blood pressure, and eroding motivation have already left a mark on everything else.
Primary care is often the right first step — not because it replaces therapy or psychiatry, but because it can sort out what’s medical, what’s behavioral, what’s both, and what kind of support makes sense right now. Dr. Marshall creates space for that conversation — without rushing it.
“When patients come in feeling ‘not like themselves,’ the answer is almost never simple. Understanding what’s actually driving it takes time — and that’s exactly the kind of time this practice is designed to give.”
Mental and physical health are not separate systems. They respond to each other constantly. Here’s where that connection shows up most clearly — and why treating one without the other rarely gets the results patients are looking for.
Chronic stress keeps cortisol and adrenaline persistently elevated — creating sustained cardiovascular strain. Anxiety and poor sleep are among the most frequently overlooked drivers of treatment-resistant hypertension.
Stress and poor sleep increase ghrelin and suppress leptin — driving hunger, cravings, and fat accumulation, particularly around the abdomen. Weight loss goals frequently stall until sleep and stress are explicitly addressed as part of the plan.
Cortisol elevates glucose directly. Poor sleep drives insulin resistance. Patients managing prediabetes or diabetes who aren’t also addressing sleep and chronic stress are working against their own biology.
Brain fog, low motivation, and difficulty focusing are among the most disabling — and least discussed — effects of untreated anxiety and chronic sleep disruption. They’re also among the most responsive to treatment when the underlying cause is identified.
Sleep is when the immune system consolidates and repairs. Chronic deprivation increases vulnerability to illness, slows recovery, and promotes low-grade inflammation associated with multiple chronic conditions.
Chronic stress disrupts cortisol rhythms, which in turn affects thyroid function, sex hormone regulation, and adrenal recovery. The profound fatigue that comes with burnout often has a hormonal story underneath it.
Insomnia is one of the most common primary care complaints — and one of the most inadequately addressed. Most patients leave with a sleeping pill, or advice to “practice good sleep hygiene” with no real explanation of what that means in practice.
Dr. Marshall evaluates sleep fully: stress load, caffeine and alcohol patterns, screen habits, sleep timing, underlying anxiety or mood, sleep apnea risk, medication side effects, and hormonal contributors. The goal is restorative sleep — not just more hours in bed.
When sleep apnea is suspected, referral for evaluation is part of the care plan — because untreated sleep apnea affects blood pressure, weight, glucose, and mood in ways no behavioral intervention can resolve on its own.
Anxiety and depression don’t always require a specialist to begin improving. For many patients — especially those with overlapping physical health concerns — primary care is the right starting point: medication when appropriate, therapy coordination when it adds value, and a physician who holds the full picture.
What this model provides that most standard visits don’t: time. Time to understand what’s happening, what’s contributing, and what kind of support genuinely fits your situation — not a rushed assessment and a prescription on the way out.
For more complex presentations — trauma-related concerns, diagnostic uncertainty, treatment-resistant symptoms, or specialized medication needs — Dr. Marshall coordinates referral to psychiatry as part of your care plan, not as an exit.
This isn’t a quick checklist followed by a referral. It’s a thoughtful conversation about what’s happening, what’s contributing, and what kind of support makes sense for where you are right now.
Because mood and sleep symptoms change over time, the concierge model builds in continuity. Follow-up, adjustments, and genuine encouragement — whether things are improving or not going as expected — are woven into the ongoing relationship.
If you are having thoughts of harming yourself or others, or you are in immediate danger, do not wait for an appointment. Call 911, contact the 988 Suicide & Crisis Lifeline by call or text, or go to your nearest emergency room immediately. You do not need to be sure — if something feels urgent, treat it that way.
These conversations happen in the office every week. Here are the questions that come up most — and the honest answers they deserve.
Can a primary care doctor actually help with anxiety or depression?
Yes — and for many patients, primary care is the right first stop. This is especially true when there are overlapping physical health concerns like sleep disruption, fatigue, blood pressure changes, or medication side effects. Dr. Marshall evaluates, treats common presentations, and coordinates with specialists when additional support is needed.
What kinds of sleep problems can be addressed here?
Difficulty falling asleep, staying asleep, waking too early, non-restorative sleep, and disruption tied to stress, mood, or chronic health concerns. Sleep apnea evaluation and appropriate referral when indicated. And what won’t happen: a generic “sleep hygiene” handout with no follow-up.
No. Many patients benefit most from therapy, behavioral sleep work, routine changes, stress reduction, or evaluation for an underlying medical contributor. Others benefit from medication as one component of a broader plan. The conversation leads the decision — not the other way around.
The right approach looks at both simultaneously. Thyroid disease, sleep apnea, medication side effects, alcohol use, chronic inflammation, and metabolic dysfunction can all produce symptoms that closely resemble anxiety or depression. Treating the wrong root cause won’t help — and identifying the right one can change everything.
That connection is well-established and common. Stress and poor sleep drive overeating, glucose instability, elevated blood pressure, fatigue, and reduced recovery from exercise. Addressing them together often improves multiple health goals simultaneously — which is exactly why they belong in the same conversation.
Therapy is valuable for most people dealing with anxiety, depression, grief, or relationship stress — not just those with complex presentations. Psychiatry is most important for diagnostic complexity, treatment-resistant symptoms, trauma, or specialized medication management. Dr. Marshall helps determine the right combination and coordinates referrals when they’re part of the plan.
Anxiety disorders
Depression
Chronic fatigue
Insomnia
Sometimes “not quite right” is reason enough. Dr. Marshall creates space to understand what’s happening — without rushing, without assumptions — and builds a plan that fits where you are right now. It starts with one conversation.
Serving Titusville, FL and surrounding areas · Not a substitute for health insurance