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Stedfast PsychiatryFLORIDA & SOUTH CAROLINA
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Treatments Deep TMS therapySpravato (esketamine) Psychiatric evaluationMedication managementGenetic testingPsychotherapyTelepsychiatryADHD testingChildren and teensGeriatric psychiatryFacility program (ALF / SNF) All treatments
Conditions Major Depressive DisorderGeneralized Anxiety DisorderADHD in Adults and ChildrenBipolar DisorderPost-Traumatic Stress DisorderObsessive-Compulsive DisorderPanic DisorderSocial Anxiety DisorderInsomniaPostpartum Depression and Perinatal Mood DisordersTreatment-Resistant DepressionSchizophrenia and Psychotic Disorders By category Depression and mood disordersAnxiety disordersADHD and neurodevelopmentalTrauma and stressPsychotic disordersPersonality disordersSleep disordersEating disordersSubstance useMemory and cognitionWomen's mental healthChildren and teensOther conditions All 55 conditions
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Stedfast Psychiatry in Port St. Lucie, FL

Port St. Lucie has been one of the fastest-growing cities in the country for most of the last two decades, and the St. Lucie West and Tradition corridors where our office sits are where that growth is concentrated. New families, remote workers who relocated from South Florida, and retirees in PGA Village and The Vineyards all need psychiatric care that does not require a trip to Palm Beach County. Our six-provider team here is the largest on the Treasure Coast, and it covers teens and adults in the office as well as older adults in facilities across the region.

At a glance

266 NW Peacock Blvd, Suite 203, Port St. Lucie, FL 34986. New patients (561) 295-4629; existing patients (772) 279-8811. Monday to Friday 8:00 AM to 5:00 PM. 6 providers. Most major insurance and Medicare accepted.

Port St. Lucie is the base for Stedfast Living, our facility program for assisted living, independent living, and skilled nursing residents. Ryan Loli and Carline Grand Pierre, the program's senior provider, see residents aged 65 and over on site at partner facilities rather than in the office. In the office, Kathryn Segura, Kevin Myirski, Taylor Kane, and Elco Marquez see teens and adults. Myirski is a retired Army medical provider and Marine veteran who focuses on PTSD and trauma, and Marquez sees adults in English or Spanish.

Illustrative photo of a medical office building

Providers at the Port St. Lucie office

The Port St. Lucie team includes psychiatric nurse practitioners Kathryn Segura, Ryan Loli and Carline Grand Pierre and physician assistants Kevin Myirski, Elco Marquez and Taylor Kane. Visits in Spanish are available with Elco Marquez. Children and teens are seen by Kevin Myirski, Kathryn Segura and Taylor Kane. Ryan Loli and Carline Grand Pierre focus on adults 65 and older, including facility residents.

Kevin Myirski, PA-C

Physician Assistant · Adults and teens 15+; younger on request

PTSD, Anxiety, Depression, Adjustment disorders, Trauma

Kathryn Segura, PMHNP-BC

Psychiatric Nurse Practitioner · Adults and teens 16+

Anxiety, Depression

Elco Marquez, PA-C

Physician Assistant · Adults 18+ · English, Spanish

Anxiety, PTSD, Depression, Mood disorders

Ryan Loli, PMHNP-BC

Psychiatric Nurse Practitioner · Adults 65+ (facility visits only)

Geriatric psychiatry, Alzheimer's and dementia, Long-term care

Carline Grand Pierre

Psychiatric Nurse Practitioner · Adults 65+ (facility visits only)

Geriatric psychiatry, Veterans, Long-term care

Taylor Kane, PA-C

Physician Assistant · Adults and teens 17+

Anxiety, Depression, Bipolar disorder, OCD, Substance use

Services in Port St. Lucie

The Port St. Lucie office is an entry point to Stedfast Psychiatry's Deep TMS and Spravato programs. Treatment sessions run at our Palm Beach Gardens TMS center and the Palm Beach Gardens Spravato rooms, roughly 55 and 55 minutes away; the evaluation, the screening scales and the prior authorization all happen here.

Conditions treated in Port St. Lucie

Major Depressive DisorderGeneralized Anxiety DisorderADHD in Adults and ChildrenBipolar DisorderPost-Traumatic Stress DisorderObsessive-Compulsive DisorderPanic DisorderSocial Anxiety DisorderInsomniaPostpartum Depression and Perinatal Mood DisordersTreatment-Resistant DepressionSchizophrenia and Psychotic DisordersBorderline Personality DisorderEating Disorders: Anorexia, Bulimia, Binge EatingSubstance Use and Addiction PsychiatryAutism Spectrum Disorder in Teens and AdultsCognitive Decline, Dementia and Memory ConcernsGrief, Loss and Complicated GriefAdjustment Disorder and Life StressPremenstrual Dysphoric Disorder

All 55 conditions we treat

Directions and parking

The office is in St. Lucie West, immediately east of I-95. From I-95, take exit 121 for St. Lucie West Boulevard, head east, and turn onto NW Peacock Boulevard, which runs parallel to the interstate; the building is a short distance along. From Florida's Turnpike, take exit 142 for Port St. Lucie Boulevard, go west to I-95, and drive north one exit to St. Lucie West Boulevard. From US-1, take Port St. Lucie Boulevard or Prima Vista Boulevard west to St. Lucie West Boulevard.

Free surface parking surrounds the building, with accessible spaces by the main entrance. Suite 203 is on the second floor with elevator access. The lot is shared with other medical offices and rarely fills.

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Communities served from this office

Neighborhoods: St. Lucie West, Tradition, Torino, Lake Charles, PGA Village, Verano, Tesoro, The Vineyards, Sandpiper Bay, River Park, Indian River Estates, Beau Rivage West, Southbend, Veranda, Copper Creek, Port St. Lucie Gardens, Floresta, Gatlin.

Nearby cities: Fort Pierce, Stuart, Jensen Beach, Palm City, Vero Beach, Hutchinson Island, Okeechobee, Hobe Sound, Sebastian, Indiantown, Lakewood Park, White City.

Psychiatrist near Vero BeachPsychiatrist near Fort Pierce

Local emergency and crisis resources

  • Cleveland Clinic Tradition Hospital Emergency Department. 10000 SW Innovation Way, Port St. Lucie. 24-hour emergency department about ten minutes south of the office.
  • HCA Florida St. Lucie Hospital Emergency Room. 1800 SE Tiffany Ave, Port St. Lucie. Emergency care on the east side of the city.
  • 988 Suicide and Crisis Lifeline. Call or text 988 any time for free, confidential crisis support.
  • 211 Palm Beach and Treasure Coast. Dial 211 for the 24-hour crisis and helpline serving St. Lucie County.
  • New Horizons of the Treasure Coast. Community mental health center with a 24-hour crisis stabilization unit in Fort Pierce.
  • NAMI St. Lucie County. Local chapter with support groups and family education programs.

In a life-threatening emergency call 911. For a mental health crisis, call or text 988.

Questions about the Port St. Lucie office

What is parking like at the Port St. Lucie location?

Free surface parking surrounds the building, with accessible spaces by the main entrance. Suite 203 is on the second floor with elevator access. The lot is shared with other medical offices and rarely fills. There is no charge to park. If you arrive early, you are welcome to wait in the reception area.

Do you take my insurance in Port St. Lucie?

We accept most major insurance plans and Medicare, and we will check your specific benefits before you come in. Because networks change and some plans require a referral or prior authorization, the fastest way to confirm is to call (561) 295-4629 with your member ID. Patients without coverage, or who choose not to use it, can book a self-pay new-patient evaluation for $185.

Do you offer telepsychiatry for patients near Port St. Lucie?

We do. Established patients can usually alternate office visits with secure video visits, and many new patients can complete their first evaluation by video. State licensing rules mean you must be located in Florida during the appointment. Call (561) 295-4629 and ask for a telehealth appointment; we will send a link and simple instructions before your visit.

How long will I wait to become a new patient in Port St. Lucie?

We aim to see new patients within one to two weeks of their call. Availability depends on the provider, the age group, and whether you can take a video visit, so the scheduling team will offer the earliest realistic option. If you are in crisis, do not wait for an appointment: call or text 988, or go to the nearest emergency room.

Where is the nearest Deep TMS or Spravato site to Port St. Lucie?

The Port St. Lucie office does not offer Deep TMS or Spravato on site. The closest Spravato site is our Palm Beach Gardens office, and Deep TMS is available only in Palm Beach Gardens. If your Port St. Lucie provider believes you are a candidate, they will coordinate the referral, and your medication management can stay here while you complete treatment there.

Are there Spanish-speaking providers at the Port St. Lucie office?

Yes. Elco Marquez sees patients in Spanish at this office, and you can ask for a Spanish-speaking provider when you call (561) 295-4629. Our front desk can also help with scheduling in Spanish.

Book at the Port St. Lucie office

Tell us how to reach you and our scheduling team will help you explore appointment options. Most new patients are seen within one to two weeks, in person or by video. Medicare and most plans accepted; self-pay new-patient visits are $185.

Call our team: (561) 295-4629 Request an appointment