Skip to main content

Guillermo Marrero, MD

Internal Medicine

Hospital Affiliations
Orlando South Seminole Hospital, Orlando South Seminole Hospital - Longwood
Image
Dr. Marrero

Get Started Today

Fill out the form to join now, receive more information, or schedule a meeting with Dr. Marrero.
MDVIP Annual Membership Fee
MDVIP’s annual fee covers the Wellness Program and generally can be made in quarterly, semi-annual and annual payments.
Quarterly
$537.50*
Semi-Annual
$1,075.00*
Annual
$2,150.00*
I want to...

MDVIP respects your privacy and will only use your personal information as stated in our Privacy Policy and Terms of Use. By checking this box and providing your number, you are giving your express written consent to MDVIP to receive telemarketing calls or text messages using an automatic phone dialing system or an artificial or prerecorded voice at any number you may provide to MDVIP. You are requesting this form of communication, and you understand that it will be unencrypted and possibly accessible to others. You acknowledge that your consent to receive these communications is not a condition of purchase and that you may call the number listed above to get more information or enroll. You can contact MDVIP any time you wish to stop receiving such messages by replying "STOP" via text or calling 1-877-764-2340. Text "Help" for help. Message frequency may vary. Message/data rates may apply.


*By submitting this form, you agree that MDVIP may contact you at the phone number or email you provide, including by call or text (which may use automated technology), to respond to your request. Consent is not required to purchase. Message/data rates may apply. Reply STOP to opt out.

About Guillermo Marrero, MD

Engendering a relationship founded on trust, collaboration and communication is central to providing personalized health care, I believe. Through my years as a primary care physician, building a supportive and compassionate relationship, where my patients feel heard and understood, has been helpful in providing treatment plans that can help meet patient preferences and circumstances. This, in turn, I have found, has led to long-term and personalized care.

My MDVIP-affiliated practice is in Oviedo, Florida, but has been serving patients from the greater Orlando area, which includes Orlando, Kissimmee and Sanford, for nearly 25 years. My predominant focus is on preventive health, which is aimed at helping patients as they work to mitigate risks of developing troublesome health conditions. My practice offers services, including comprehensive, advanced health screenings and diagnostic tests that go far beyond those found in concierge medicine practices.

With over two decades of medical practice, my goal has been to offer a more individualized patient experience through preventive and diagnostic discussions and compassionate care.
I am fluent in English and Spanish.

Residency

Memorial Hospital of Rhode Island
Pawtucket, RI
Internal Medicine 1995-1997

Internship

Memorial Hospital of Rhode Island
Pawtucket, RI
1994-1995

Medical School

American University of the Caribbean 
Montserrat, British West Indies
Doctorate of Medicine 1993

Orlando South Seminole Hospital
Orlando South Seminole Hospital - Longwood

Spanish and English

Florida

Skiing, Hiking, Travel, Pickleball and Fishing

Benefits of joining Dr. Marrero's practice with MDVIP

MDVIP Wellness Program
Expect comprehensive screenings and tests and a custom wellness plan designed for you.
Better Doctor-Patient Relationship
97% of MDVIP members are satisfied with their relationship (vs 58% in traditional PCP).
Same/Next-Day Appointments
See Dr. Marrero quickly and take your time during each appointment.
Reachable 24/7
Reach Dr. Marrero by phone after-hours and on weekends.
Smaller Practice Size
MDVIP practices are smaller than most primary care practices, which means your doctor has more time to help you.
Your Dedicated Doctor
See Dr. Marrero when you go to the office — not someone else like a nurse practitioner or physician assistant
Travel Benefits
If you need urgent care while traveling, your physician can help arrange your care with a local hospital, pharmacy or doctor.
Medical Centers of Excellence
For patients who need care beyond what is available locally, MDVIP can connect your doctor with specialists at some of the country’s leading medical institutions
Better Health Outcomes
Members have better control of chronic conditions like type 2 diabetes, high cholesterol and hypertension.
Remote video URL
Remote video URL

The office of Guillermo Marrero, MD

Primary Office
1000 Executive Drive Suite 1
Oviedo, FL 32765
Get Directions
Hours
Mon 8:00 AM - 4:00 PM
Tue 8:00 AM - 4:00 PM
Wed 8:00 AM - 4:00 PM
Thu 8:00 AM - 4:00 PM
Fri 8:00 AM - 12:00 PM
Sat Closed
Sun Closed

Reviews from the web

star star star star star
star_border star_border star_border star_border star_border
03/12/2026 pascale dorleus
Dr Marrero is very easy to talk to and he listens to you. The staff is super friendly and know you by name.
star star star star star
star_border star_border star_border star_border star_border
03/12/2026 Andrea González
First time having an appointment at this office, and I had a great experience from the moment I arrived. The ladies at the front desk were very kind and welcoming, and Dr. Marrero was professional, attentive, and thorough. I truly appreciated the professionalism and kindness I experienced throughout my visit. Thank you!
star star star star star
star_border star_border star_border star_border star_border
03/12/2026 Carolina Barboza
Great Doctor ! Very nice, and patient with you.
star star star star star
star_border star_border star_border star_border star_border
03/09/2026 Luis Landron
Been coming here for 9 years. Great doctor
star star star star star
star_border star_border star_border star_border star_border
03/04/2026 Bruce
I have been seeing Dr Marrero for many years. He is a great doctor, he really cares about your health and outcome.
star star star star star
star_border star_border star_border star_border star_border
03/04/2026 Hany Zaki
Dr. Guillermo Marrero is an exceptional primary care physician whose compassion, knowledge, and dedication truly set him apart. He genuinely cares about your health and treats you like family. Diana, Nelly, and Shannon are equally wonderful—kind, efficient, and always welcoming. I’m beyond grateful for this amazing team.
star star star star star
star_border star_border star_border star_border star_border
03/02/2026 Marta Melendez
Muy buen Doctor,toma su tiempo para escuchar a uno
star star star star star
star_border star_border star_border star_border star_border
03/02/2026 Chip Self
I’ve been seeing Dr. Marrero for about 15 years. He is a positive skilled physician and I always look forward to seeing him on my appointments. You can talk to him about anything and he listens carefully. I hope I get to see him for another 15 years.
star star star star star
star_border star_border star_border star_border star_border
02/25/2026 Brandy Perry
Been seeing dr marrero since 2009 and I’ll never see anyone else as long as he is in practice. Staff is always phenomenal.
star star star star star
star_border star_border star_border star_border star_border
02/24/2026 Che Hernandez
No solo es un excelente profesional, sino también una persona muy empática. Escucha con atención, no minimiza los síntomas y realmente se preocupa. Ese nivel de humanidad es difícil de encontrar. Muy agradecida.
star star star star star
star_border star_border star_border star_border star_border
02/24/2026 Gary Gloer
I cannot remember. I have been a patient of Dr. Marrero for about 17 years.

I have always been pleased with his care.

I have a short event I would like th share. My first wife suffered from depression. At times it was debilitating.

She had a psychiatrist that prescribed some med that literally sent her over the edge and she ended up Baker acted.

The powers that be released her after 3 days and told me to go see a particular psychiatrist within the next week or they were going to pick her up.

I took her to the required Dr after confirming the appointment only to be told the Dr left and do I want to see a nurse practitioner.

Needless to say, after driving seventy five miles to this required appointment, I had some words for them and did not take her back.

I immediately took him her to Doctor Marrero.

He told us point blank that he didn't have a great deal of knowledge about the subject, but he would research it and get back with us.

Long story short for the next 7 to 10 days, he saw her every day to dial in her medication.

He helped her adjust the medication, and she was on that dosage until she died and never had another event with depression.

The point about the diatribe above is that he cared about a patient that he'd never seen before enough to help her have a better life.

I cannot thank him enough and he is my primary care doctor to this day.

I highly recommend his MD VIP program as well.
star star star star star
star_border star_border star_border star_border star_border
02/11/2026 patricia pagani
Muy buen medico. Las asistentes son muy agradables. Gracias a Dios llevamos con mi esposo muchos años con ellos.
star star star star star
star_border star_border star_border star_border star_border
02/11/2026 Nathan Roubicek
Dr. Marrero has been my PCM over the last 6 months. He takes excellent care each time I’ve visited his office and is very thorough in his practice of medicine. I’m very pleased.
star star star star star
star_border star_border star_border star_border star_border
02/11/2026 kelly larsen
They saw me quickly and gave me a prescription easily and fast.
star star star star star
star_border star_border star_border star_border star_border
02/09/2026 MATT S
Been coming for years. Thank you to everyone there.
star star star star star
star_border star_border star_border star_border star_border
01/13/2026 Mary Hibbits
My whole family comes here. We love everyone there
star star star star star
star_border star_border star_border star_border star_border
01/04/2026 Jorge Ortega
Dr. Marrero has been my primary for over 20 years. He has always had a great bedside manner and has always had my best interest at heart. There is nothing I can't bring up to him that he will not take seriously and help me work through. He is knowledgeable, a great advocate for his patients, and a good person. Nelly, Shannon, Diana and everyone at the practice are absolutely wonderful as well.

I highly recommend the practice.
star star star star star
star_border star_border star_border star_border star_border
12/08/2025 Brittany Krapf
Dr Marrero is excellent and his staff is amazing
star star star star star
star_border star_border star_border star_border star_border
12/02/2025 Laura Stephenson
I’ve seen Dr. Marrero for over 15 years. His practice is excellent and from the moment you walk in the door. The staff are always polite and happy to help. I had seen a very expensive doctor for 2 years before I found Dr Marrero, who had missed a diagnosis for thyroid cancer. The very first time I saw Dr. Morrow he found it immediately, annd walked me through the exact steps of what to expect. I was able to have the cancer removed without much issue. I can’t recommend him enough, as he has been outstanding. I’ve moved to other states, but I still come back to him. He is someone you can trust , he takes his time, and always makes sure you stay healthy! Thank you Dr. Marrero and all your team.
star star star star star
star_border star_border star_border star_border star_border
10/29/2025 Kathleen Densberger
Excellent care and very friendly staff.
star star star star star
star_border star_border star_border star_border star_border
10/17/2025 Lucia Luévano Noriega
Dr.Marrero and his staff are the best!
star star star star star
star_border star_border star_border star_border star_border
10/13/2025 David
Dr.Marrero office was very clean. Office personnel were excellent knowledgeable. Nice atmosphere The doctor was very professional listened to all my concerns
star star star star star
star_border star_border star_border star_border star_border
10/13/2025 rich desena
Dr Marrero is great. He is very comfortable to consult with and extremely knowledgeable.... and the office is puntcual and pleasant. Definitely found our family physician for life!
star star star star star
star_border star_border star_border star_border star_border
09/26/2025 aloysius fernandez
Very kind and compassionate physician that actually understands and care about his patients!
star star star star star
star_border star_border star_border star_border star_border
09/11/2025 Oma Persaud
Always comfortable going to Dr. Merrero, answers all my questions, and always offers suggestions for herbal remedies, which is always better medications.
star star star star star
star_border star_border star_border star_border star_border
09/10/2025 Marilyn Bastidas
Dr. Marrero and his full team are absolutely outstanding. They sincerely care and go above and beyond for each patient. Thanks so much for the extraordinary care you provide.
star star star star star
star_border star_border star_border star_border star_border
09/08/2025 Mydalis Lugo
Dr. Marrero is a very knowledgeable and respectful doctor. He truly listens to his patients and shows genuine care. Scheduling appointments is simple and convenient. I would recommend him without any hesitation.
star star star star star
star_border star_border star_border star_border star_border
09/04/2025 Dan L. Hess
Been with Dr Marrero for 12 years now. Best Dr in the business, great relationship with his clients. The office staff is really friendly and helpful.
star star star star star
star_border star_border star_border star_border star_border
08/22/2025 Dennis Buck
Excellent visit
star star star star star
star_border star_border star_border star_border star_border
08/19/2025 Sam Haddad
Dr. Marrero is great!
star star star star star
star_border star_border star_border star_border star_border
08/14/2025 Kathy Taylor
Dr. Marrero has been excellent since my first visit over 5 years ago. Both him and his team are very kind and attentive. I couldn’t ask for a better doctor.
star star star star star
star_border star_border star_border star_border star_border
08/12/2025 Tim Miller
Cool
star star star star star
star_border star_border star_border star_border star_border
08/12/2025 Patricia Olaya
Great service. Feels very personal. Very efficient.
star star star star star
star_border star_border star_border star_border star_border
08/07/2025 CreatrixCreations
Dr Marrero and his team are AMAZING! They've always treated my family well and show real concern and care for us and Dr Marrero always listens. I wouldnt trade this office for the world. Thank you so much for being excellent care providers!! Im usually very anxious but you always make me feel right at home
star star star star star
star_border star_border star_border star_border star_border
08/07/2025 Anastasia Vrljanovic
Dr.Marrero is an outstanding doctor, he very much understands and is willing and patient with every patient he sees!
star star star star star
star_border star_border star_border star_border star_border
08/05/2025 Gavin Kerr
Nelly shannon and dr marrero are amazing.
star star star star star
star_border star_border star_border star_border star_border
08/05/2025 Lety Diaz
Dr Marrero has been my husband’s physician and he is the best doctor we have ever seen
star star star star star
star_border star_border star_border star_border star_border
08/05/2025 Brym Anderson
Dr. Marrero has been my primary care Dr for 20 years. He’s very knowledgeable, caring and always listening to my concerns and wants to help. His staff is great too!

Frequently Asked Questions

Doctors who operate in the MDVIP models typically see far fewer patients than traditional primary care doctors. That gives them more time to develop deeper doctor-patient relationships that can lead to better outcomes. They can also offer conveniences that most primary care doctors can’t, including same- and next-day appointments. They’re available after hours for urgent matters. And they have time to focus on prevention. That focus begins with the MDVIP Wellness Program, which patients pay for with their annual membership fee.

Most MDVIP-affiliated primary care practices accept insurance (your physician can tell you whether they accept your specific insurance plan). Your annual fee pays for preventive care medical services that insurance usually doesn’t cover (e.g., advanced diagnostic testing and screenings). Your MDVIP-affiliated physician will continue to bill your insurance and charge copays, co-insurances and deductibles as he or she currently does for other medical services like sick visits.

MDVIP makes wellness and prevention easier by providing your physician with innovative tools and technology. MDVIP supports your physician’s practice and seeks to eliminate barriers to a positive healthcare experience. Your doctor will determine whether and how to incorporate these tools at his/her discretion.

**The message above is a personal introduction from the physician, intended to help you get to know them better. The views, opinions, and statements expressed above are solely those of the physician and do not necessarily reflect the views or positions of MDVIP. This content is intended for general background purposes only and does not constitute medical advice, diagnosis, or treatment. Any mentions of expertise or quality of care are personal expressions and should not be interpreted as guarantees of performance or outcomes.