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Dr. Guillermo Fonseca, MD

Internal Medicine* Age 48
Dr. Guillermo Fonseca, MD
5.0 (14 Ratings)
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Dr. Guillermo Fonseca, MD is an Internist in Oviedo, FL.
Dr. Guillermo Fonseca, MD
5.0 (14 Ratings)
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Dr. Guillermo Fonseca, MD

Internal Medicine* Age 48
Oviedo, FL
Accepting new patients
24 years of experience
Dr. Guillermo Fonseca, MD is an Internist in Oviedo, FL.

About

Dr. Fonseca graduated from Pontificia Universidad Javeriana, Facultad De Medicina. Dr. Guillermo Fonseca, MD is an Internist in Oviedo, FL and has 24 years experience. Dr. Fonseca currently practices at Practice and are affiliated with AdventHealth Orlando. At present, Dr. Fonseca received an average rating of 5.0/5 from patients and has been reviewed 14 times. Dr. Fonseca's office accepts new patients. Dr. Fonseca also speaks Portuguese. Dr. Fonseca accepts multiple insurance plans.

Explains Conditions Well

Patients said this doctor explains conditions well.

Trustworthy

Patients said this doctor is trustworthy.

Friendly Staff

Patients said the staff was friendly.

Easy Scheduling

Patients said scheduling was easy.

Experience Check

Enter a condition or procedure
Muscle Spasm
Chronic Care Management
Arterial Blood Gas Test (ABG)
Muscle Spasm
Chronic Care Management
Arterial Blood Gas Test (ABG)
Muscle Spasm
Chronic Care Management
Arterial Blood Gas Test (ABG)
Acute Bronchitis
Acute Lower Respiratory Infection
Acute Upper Respiratory Infection
Joint Pain
Leukocytopenia
Nausea
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Shortness of Breath
Care Coordination for Complex Conditions and Procedures
Electrocardiogram (EKG)
Immunization Administration
Wellness Examination
Abdominal Pain
Acute Kidney Infection
Acute Pharyngitis
Acute Sinusitis
Acute Venous Embolism Thrombosis
Administrative Physical
All Headaches (incl. Migraine)
Allergic Rhinitis
Anemia
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Animal Allergies
Anxiety
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Arthritis
Arthritis of the Elbow
Asthma
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Atherosclerosis
Atopic Dermatitis (Eczema)
Atrophic Vaginitis
Back Pain
Bladder Infection
Bronchitis
Bursitis
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Cachexia
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Calcium Metabolism Disorders
Carpal Tunnel Syndrome
Cellulitis
Chest Pain
Chest Wall Pain Syndrome
Chronic Neck Pain
Chronic Sinusitis
Constipation
Contact Dermatitis
COPD (Chronic Obstructive Pulmonary Disease)
Cough
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Dehydration
Diabetes Type 2
Diabetes With Renal Manifestations
Diabetic Polyneuropathy
Diarrhea
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Difficulty With Walking
Dysentery
Dyslipidemia
Dysphagia
Earwax Buildup
Eczema and Contact Dermatitis
Enlarged Prostate (BPH)
Esophagitis
Essential Tremor
Fever
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Fibromyalgia
Folic Acid Deficiency
Foot Infection
Gait Abnormality
Gastritis
Gastroesophageal Reflux Disease (GERD)
Gastroparesis
Genital Herpes
Gout
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Hair Loss
Headache
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Heart Disease
Heart Palpitations
Hemorrhoids
Hernia
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Herpes Simplex Infection
Human Immunodeficiency Virus (HIV)
Hypercalcemia
Hyperlipidemia
Hypertension
Hypogonadism
Hypokalemia
Hypotension
Hypotension (Excluding Maternal)
Hypothyroidism
Impetigo
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Insomnia
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Intestinal Diverticulitis
Irritable Bowel Syndrome
Itchy Skin
Jock Itch
Kidney Infection
Limb Pain
Limb Swelling Caused by Fluid Overload
Lipid Disorders
Liver Damage from Alcohol
Low Back Pain
Magnesium Metabolism Disorders
Malaise and Fatigue
Malnutrition
Menopausal and Postmenopausal Disorders
Menstrual Disorders
Migraine
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Mild Asthma
Mineral Metabolism Disorders
Muscle Cramping
Muscle Weakness
Nail and Nail Bed Infection
Nail Infection
Neurogenic Bladder
Obesity
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Onychomycosis
Osteoarthritis
Osteoarthritis of Foot
Osteoarthritis of Hip
Osteoarthritis of Hip and Thigh
Osteoarthritis of Knee
Osteoarthritis of Shoulder
Osteoarthritis of Spine
Osteopenia
Osteoporosis
Otitis Media
Outer Ear Infection
Overweight
Patellofemoral Pain Syndrome (PFPS)
Pharyngitis
Plantar Fasciitis
Pneumonia
Polyneuropathy
Proteinuria
Radiculopathy
Reflux Esophagitis
Ringworm
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Salivary Gland Stones and Inflammation
Seborrheic Dermatitis
Sexually Transmitted Diseases (STDs)
Shoulder Tendinitis and Tenosynovitis
Sinusitis
Sleep Apnea
Sleep-Related Leg Cramp
Sprains and Strains (incl. Muscle Tear)
Tension Headache
Testicular Dysfunction
Throat Pain
Thrush
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Tinnitus
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Tobacco Use Disorder
Tremor
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Urinary Incontinence
Urinary Stones
Urinary Tract Infection (UTI)
Vaginitis or Vaginosis
Venous Embolism and Thrombosis
Vertigo
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Vitamin B Deficiency
Vitamin B12 Deficiency
Vitamin D Deficiency
Warts
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Wheezing
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Yeast Infections
Abscess or Cyst Drainage or Aspiration
Abscess or Fluid Incision and Drainage
Advance Directive End of Life Planning

Insurance Accepted

* Please verify this information when scheduling an appointment.
  • Curative EPO
    Curative PPO Plus
    Curative PPO
  • First Health (Coventry Health Care) PPO
  • National (BlueCard) PPO
  • MultiPlan PPO
  • Choice Plus POS II
    Aetna
  • Choice Care PPO
  • Cigna PPO
  • Blue Card PPO

Locations

  1. 1 Dr Guillermo Mendoza Int Med-Llc
    2572 W State Road 426 Ste 3040, Oviedo, FL 32765
    Icon Directions Right Arrow Directions Phone Icon (407) 890-9748

Patient Satisfaction

Likelihood to recommend Dr. Fonseca
5.0
Based on 14 Reviews
5 Stars (14)
4 Stars (0)
3 Stars (0)
2 Stars (0)
1 Star (0)

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Patient Reviews
Dec 10, 2024
Dr. Mendoza is simply the best doctor. He is very knowledgeable and takes the time to talk with his patients. Also, in case of an unexpected illness he is flexible to make arrangements.
Oviedo — Dec 10, 2024
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Photo: Dr. Guillermo Fonseca, MD
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Dr. Fonseca's Office & Staff

  • Ease of scheduling urgent appointments
  • Office environment, cleanliness, comfort, etc.
  • Staff friendliness and courteousness
  • Total wait time (waiting & exam rooms)

Experience with Dr. Fonseca

  • Level of trust in provider's decisions
  • How well provider explains medical condition(s)
  • How well provider listens and answers questions
  • Hpends appropriate amount of time with patients

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About Me

Languages Spoken
Portuguese
Languages Spoken
Specialties*
Internal Medicine
Specialties*
  • *Sharecare does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
Education

Education

Medical Education
  • Pontificia Universidad Javeriana, Facultad De Medicina
    2001
Medical Education

Internship

Internship
  • Metrowest Medical Center
Internship
Common Questions and Answers
Responses are sourced directly from patients.
Does Dr. Fonseca communicate via email?
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Does Dr. Fonseca offer telehealth services or virtual visits?
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Does Dr. Fonseca offer an online patient portal?
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Does Dr. Fonseca have free onsite parking?
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Does Dr. Fonseca offer weekend visits?
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Does Dr. Fonseca offer evening visits?
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No
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Does Dr. Fonseca specialize in working with children or adolescents?
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Does Dr. Fonseca specialize in working with seniors?
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Does Dr. Fonseca specialize in couples therapy?
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Does Dr. Fonseca specialize in working with LGBTQ+ community?
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Frequently Asked Questions

Find contact information here to make an appointment.

A list of accepted insurance providers is available on the Sharecare insurance check. It is always a good idea to verify your insurance when making an appointment.

New patients are generally accepted by Dr. Guillermo Fonseca, MD. To arrange an appointment, call the number on Dr. Fonseca's profile.

Dr. Guillermo Fonseca, MD is affiliated with AdventHealth Orlando.

Hospital Affiliations

  • AdventHealth Orlando

    601 E Rollins St, Orlando, FL