1. Internal Medicine Doctors
  2. CT
  3. Cos Cob, CT

Dr. Marcus Mayus, MD

Internal Medicine•Male•Age 44

Dr. Marcus Mayus, MD is a Internal Medicine Specialist in Cos Cob, CT. He is affiliated with medical facilities Greenwich Hospital and Stamford Hospital. Be sure to call ahead with Dr. Mayus to book an appointment.

Dr. Mayus

Francis X Walsh MD PC

31 River Rd Ste 200 Cos Cob, CT 06807
(203) 322-2366
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(203) 322-2366

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At a Glance

  • Explains Conditions Well
    Patients said this doctor explains conditions well. • See reviews
  • Practices at Top Hospital
    Outstanding Patient Experience Award™ • See hospitals
  • Hospital Satisfaction
    Patients said they were highly satisfied at this doctor's hospital. • See hospitals

Experience and Background Checks

Experience
Background

Background Check

No malpractice claims found for Connecticut
No disciplinary actions found for the years we collect data
No board actions found for the years we collect data
Learn more about background checks

Experience Check

Check if Dr. Mayus treats your condition or procedure

Dr. Mayus' conditions and procedures:

  • Abdominal Pain
  • Abnormal Thyroid
  • Abscess or Cyst Drainage or Aspiration
  • Abscess or Fluid Incision and Drainage
  • Acidosis
  • Acne
  • Actinic Keratosis
  • Acute Bronchitis
  • Acute Deep Vein Thrombosis (DVT)
  • Acute Pharyngitis
  • Acute Sinusitis
  • Acute Upper Respiratory Infection
  • Acute Venous Embolism Thrombosis
  • ADHD and-or ADD
  • Administrative Physical
  • Advance Directive End of Life Planning
  • Alkalosis
  • All Headaches (incl. Migraine)
  • All Types of Food Poisoning
  • Allergic Conjunctivitis
  • Allergic Rhinitis
  • Anemia
  • Animal Allergies
  • Anxiety
  • Arterial Blood Gas Test (ABG)
  • Arthritis
  • Arthritis of the Elbow
  • Arthritis of the Neck
  • Asthma
  • Asymptomatic Post-Menopausal Status
  • Ataxia
  • Atherosclerosis
  • Back Pain
  • Bedsores
  • Benign Chronic Pain Syndrome
  • Bird Flu
  • Bladder Atony
  • Bladder Infection
  • Blood in Urine (Hematuria)
  • Bronchiectasis
  • Bronchitis
  • Bruise of Face, Scalp, or Neck
  • Bunion
  • Bursitis
  • Calcium Metabolism Disorders
  • Candidiasis of Skin and Nails
  • Care Coordination for Complex Conditions and Procedures
  • Carpal Tunnel Syndrome
  • Cellulitis
  • Chest Pain
  • Chest Wall Pain Syndrome
  • Chronic Care Management
  • Chronic Deep Vein Thrombosis (DVT)
  • Chronic Fatigue Syndrome
  • Chronic Neck Pain
  • Chronic Pain
  • Chronic Pharyngitis
  • Chronic Sinusitis
  • Cluster Headache
  • Coccygeal Pain
  • Common Cold
  • Constipation
  • Contact Dermatitis
  • COPD (Chronic Obstructive Pulmonary Disease)
  • Cough
  • Deep Vein Thrombosis (DVT)
  • Dehydration
  • Dermatitis
  • Dermatitis Due to Drugs
  • Dermatitis Due to Substances Taken Internally
  • Diabetes Counseling
  • Diabetes Mellitus, Secondary
  • Diabetes Type 1
  • Diabetes Type 2
  • Diabetes With Renal Manifestations
  • Diabetic Polyneuropathy
  • Diarrhea
  • Difficulty With Walking
  • Diverticulitis, Intestinal
  • Diverticulosis, Intestinal
  • Dizziness
  • Down Syndrome
  • Dry Eyes
  • Dysentery
  • Dyslipidemia
  • Dysphagia
  • Dysthymia (Chronic Depression)
  • Dysthymia and Cyclothymia (Mood Disorders)
  • Ear Ache
  • Earwax Buildup
  • Electrocardiogram (EKG)
  • Emphysema
  • Enlarged Prostate (BPH)
  • Enteritis
  • Esophagitis
  • Essential Tremor
  • Fecal Occult Blood Test for Colorectal Cancer
  • Fever
  • Fibromyalgia
  • Folic Acid Deficiency
  • Food Poisoning
  • Gait Abnormality
  • Gas-Bloat Syndrome
  • Gastritis
  • Gastroesophageal Reflux Disease (GERD)
  • Gastroparesis
  • Gonorrhea Infections
  • Gout
  • Hair Loss
  • Hammer Toe
  • Headache
  • Heart Disease
  • Heart Palpitations
  • Hemorrhoids
  • Hepatitis A
  • Hernia
  • Herpes Simplex Infection
  • Herpes Zoster Without Complication
  • Hip Pointer Injuries
  • Hip Sprain
  • Hives
  • Hydrocele
  • Hypercalcemia
  • Hyperkalemia
  • Hyperlipidemia
  • Hypertension
  • Hypoglycemia
  • Hypogonadism
  • Hypokalemia
  • Hypotension
  • Hypotension (Excluding Maternal)
  • Hypothyroidism
  • Immunization Administration
  • Incision and Removal of Foreign Object
  • Influenza (Flu)
  • Insomnia
  • Interstitial Cystitis
  • Iodine Deficiency
  • Iron Metabolism Disorders
  • Irritable Bowel Syndrome
  • Itchy Skin
  • Joint Pain
  • Lactose Intolerance
  • Leg and Foot Ulcers
  • Limb Cramp
  • Limb Pain
  • Limb Swelling
  • Limb Swelling Caused by Fluid Overload
  • Lipid Disorders
  • Liver Damage from Alcohol
  • Low Back Pain
  • Low Blood Oxygen Level
  • Lyme Disease
  • Magnesium Metabolism Disorders
  • Malaise and Fatigue
  • Malnutrition
  • Mastodynia
  • Menopausal and Postmenopausal Disorders
  • Migraine
  • Mineral Metabolism Disorders
  • Muscle Spasm
  • Muscle Weakness
  • Mycobacterial Lung Infection
  • Nail and Nail Bed Infection
  • Nasopharyngitis
  • Nausea
  • Neurogenic Bladder
  • Nighttime Urination (Nocturia)
  • Noninfectious Gastroenteritis and Colitis
  • Nosebleed
  • Obesity
  • Osteoarthritis
  • Osteoarthritis of Ankle and Foot
  • Osteoarthritis of Hand or Wrist
  • Osteoarthritis of Hands
  • Osteoarthritis of Hip
  • Osteoarthritis of Hip and Thigh
  • Osteoarthritis of Knee
  • Osteoarthritis of Shoulder
  • Osteoarthritis of Spine
  • Osteopenia
  • Osteoporosis
  • Otitis Media
  • Outer Ear Infection
  • Overactive Bladder
  • Overweight
  • Painful Urination (Dysuria)
  • Patellofemoral Pain Syndrome or Knee Pain
  • Peptic Ulcer
  • Pericardial Disease
  • Peripheral Autonomic Neuropathy
  • Peripheral Nerve Disorders
  • Pharyngitis
  • Phlebitis and Thrombophlebitis
  • Phosphorus Metabolism Disorders
  • Pinkeye (Conjunctivitis)
  • Plantar Wart
  • Pneumonia
  • Pollen Allergy
  • Polymyalgia Rheumatica (PMR)
  • Polyneuropathy
  • Polyuria
  • Postnasal Drip
  • Prostatitis
  • Proteinuria
  • Radiculopathy (Not Due to Disc Displacement)
  • Rash
  • Raynaud's Disease
  • Reflux Esophagitis
  • Restless Leg Syndrome
  • Rosacea
  • Sarcoidosis
  • Sciatica (Not Due to Disc Displacement)
  • Secondary Hypertension
  • Secondary Renovascular Hypertension
  • Sexually Transmitted Diseases (STDs)
  • Shingles
  • Shortness of Breath
  • Sickle Cell Disease
  • Sinus Bradycardia
  • Sinus Tachycardia
  • Sinusitis
  • Sleep Apnea
  • Sleep-Related Leg Cramp
  • Smoking Cessation Counseling
  • Speech, Language and Learning Disorders
  • Sprains and Strains (incl. Muscle Tear)
  • Strep Throat
  • Swine Flu
  • Tension Headache
  • Testicular Dysfunction
  • Thyroid Goiter
  • Tobacco Use Disorder
  • Torticollis
  • Transient Ischemic Attack (TIA)
  • Tremor
  • Trigeminal Neuralgia
  • Urinary Incontinence
  • Urinary Stones
  • Urinary Tract Infection (UTI)
  • Venous Embolism and Thrombosis
  • Venous Insufficiency
  • Vertigo
  • Viral Enteritis
  • Viral Hepatitis
  • Viral Infection
  • Vitamin A Deficiency
  • Vitamin B Deficiency
  • Vitamin B12 Deficiency
  • Vitamin D Deficiency
  • Warts
  • Wellness Examination
  • Wheezing
  • Yeast Infections

Insurance Check

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Dr. Mayus accepts

Accepted insurance can change. Please double-check when making an appointment.

(203) 322-2366

Dr. Mayus accepts the following insurance:

Aetna
Aetna HMO
Choice Plus POS II
Select
Anthem
Access Blue New England Network-CT
Balanced Pathway Tiered-CT PPO
Balanced Pathway-CT HMO
Balanced Pathway-CT PPO
Blue New England Network-CT HMO
BlueCare Health Plan (with Expanded Network - Tiered)-CT
BlueCare Health Plan (with Expanded Network)-CT
BlueCare Select (Tiered - Charter)-CT
BlueCare Select (Tiered - Elm)-CT
BlueChoice New England Network-CT
Bronze Pathway X Enhanced Tiered-CT HMO
Bronze Pathway X w/HSA-CT HMO
Bronze Pathway X w/HSA-CT PPO
Bronze Pathway X-CT PPO
Bronze Standard Pathway X for HSA-CT PPO
Bronze Standard Pathway X-CT PPO
Catastrophic Pathway X Enhanced-CT HMO
Century Preferred (Tiered)-CT
Century Preferred Select (Tiered - Charter)-CT
Century Preferred Select (Tiered - Elm)-CT
Century Preferred Tiered (Select Network)-CT
Century Preferred-CT
Choice BlueCare-CT HMO
Choice Century Preferred Basic-CT PPO
City of New Haven - BlueCard-CT
City of New Haven - Century Preferred-CT
CT Children's Medical Center - Tiered-CT PPO
Day Kimball Tiered-CT PPO
Gold Pathway X Enhanced Tiered-CT HMO
Gold Pathway X-CT HMO
Gold Pathway X-CT PPO
Gold Standard Pathway X-CT PPO
National (BlueCard Basic) PPO
National (BlueCard) PPO
Pathway CT (Small Grp)-CT HMO
Pathway CT (Small Grp)-CT PPO
Pathway CT Tiered (Small Grp)-CT PPO
Pathway Enhanced (Ind)-CT HMO
Pathway Enhanced Tiered (Ind)-CT HMO
Pathway X (Ind)-CT PPO
Pathway X (Small Grp)-CT HMO
Pathway X (Small Grp)-CT PPO
Pathway X Enhanced (Ind -)-CT HMO
Pathway X Enhanced Tiered (Ind)-CT HMO
Platinum Pathway X-CT PPO
Silver Pathway X Tiered-CT PPO
Silver Pathway X w/HSA-CT HMO
Silver Pathway X w/HSA-CT PPO
Silver Pathway X-CT PPO
Silver Standard Coinsurance Pathway X-CT PPO
Silver Standard Pathway X-CT PPO
State BlueCare (Local Network only)-CT
State BlueCare (with Expanded Network - Tiered)-CT
State BlueCare (with Expanded Network)-CT
State Preferred (Tiered)-CT
State Preferred-CT
USA-CT PPO
Yale New Haven Health System - Tiered-CT PPO
Blue Cross Blue Shield
Blue Card PPO
CareFirst Blue Cross Blue Shield
HealthyBlue 2.0
HealthyBlue Advantage
Cigna
Cigna PPO
First Health (Coventry Health Care)
First Health (Coventry Health Care) PPO
Harvard Pilgrim Health Care
Harvard Pilgrim Health Care PPO
MultiPlan
MultiPlan PPO

Dr. Mayus' Reviews

Likelihood to recommend Dr. Mayus

4.7

Based on 35 ratings

5 Stars
88.57142857142857%
(31)
4 Stars
5.714285714285714%
(2)
3 Stars
0%
(0)
2 Stars
0%
(0)
1 Star
5.714285714285714%
(2)
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How likely are you to recommend
Dr. Mayus?(Select your rating)
What went well
  • Listened & answered questions (33)
  • Trusted the provider's decisions (33)
  • Appointment wasn't rushed (32)
What could be improved
  • Long wait times (4)
  • Staff wasn't friendly (4)
  • Difficult to schedule appointment (3)
RecentHighestLowestMost Helpful
Reply Flag
It was a pleasure to speak to a physician who took the time to understand my problem and had compassion for the effect it is having on my quality of life. A rare find in Medicine today.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
D.F – Apr 19, 2021
Ă—Post a ResponseAre you Dr. Marcus Mayus, MD?
Reply Flag
Dr. Mayus is the Very Best. Very compassionate. Generous with his time. A first class clinician. Grateful to have him watching over me!
What went well
  • Staff friendliness
  • Listened & answered questions
  • Trusted the provider's decisions
What could be improved
No results
1 person found this helpful
Helpful
Tony Pastore – Feb 04, 2021
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Reply Flag
Dr Mayus always takes the time to answer any questions. His care of my family is exemplary. It is obvious that he truly cares about his patients.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
2 people found this helpful
Helpful
Joyce Zimmerman – Jan 08, 2021
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Reply Flag
Excellent Doctor. Very caring and professional.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
1 person found this helpful
Helpful
Elizabeth Bolick – Oct 15, 2020
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Reply Flag
Knowledgable. personable
What went well
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
1 person found this helpful
Helpful
Aug 03, 2020
Ă—Post a ResponseAre you Dr. Marcus Mayus, MD?
Reply Flag
very inefficient to the point of dangerous !!
What went well
No results
What could be improved
  • Office environment
  • Staff wasn't friendly
1 person found this helpful
Helpful
Jul 23, 2020
I'm sorry you feel this way. I appreciate your...Read More
Ă—Post a ResponseAre you Dr. Marcus Mayus, MD?
Reply Flag
As longtime patients, my husband and I feel very fortunate to be in the care of Dr. Mayus and the great staff in his office. We have complete confidence, trust and faith in Dr. Mayus, and he is a wonderful person, too!
What went well
No results
What could be improved
No results
1 person found this helpful
Helpful
May 29, 2020
Ă—Post a ResponseAre you Dr. Marcus Mayus, MD?
Reply Flag
Excellent medical care
What went well
No results
What could be improved
No results
Helpful
May 06, 2020
Ă—Post a ResponseAre you Dr. Marcus Mayus, MD?
Reply Flag
Concerned
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Jps – Oct 23, 2019
Ă—Post a ResponseAre you Dr. Marcus Mayus, MD?
Reply Flag
Dr. Mayus is thoughtful, kind, smart and caring. He's a wonderful doctor.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
2 people found this helpful
Helpful
Aug 12, 2019
Ă—Post a ResponseAre you Dr. Marcus Mayus, MD?
Reply Flag
I have been going to Dr. Mayus for years. His bedside manner is excellent. He truly cares for his patients. I am a 66 year old women and my son in law also goes to him and could not believe he treats me like I was one of his younger patients. He is everything you would want a doctor to be.
What went well
No results
What could be improved
No results
6 people found this helpful
Helpful
Linda Rodriguez in Norwalk, CT – Oct 31, 2017
Ă—Post a ResponseAre you Dr. Marcus Mayus, MD?
Reply Flag
A beautiful human being totally dedicated to his patients.
What went well
No results
What could be improved
No results
6 people found this helpful
Helpful
Janet weiss in Stamford Ct (formerly) – May 01, 2017
Ă—Post a ResponseAre you Dr. Marcus Mayus, MD?
Reply Flag
Dr. Mayus is everything a doctor should be. He's brilliant, he's kind, he's thorough, he's easy to talk with and you won't ever feel embarrassed about anything around him. I have been going to this practice since we moved here in 2007 and all of the doctors in this practice are great. They always make time for you if you have a problem. The office staff are all excellent. Front office staff Candace and Taylor. Ossi and Eileen and Jose are all great. Sorry I can't remember everyone!
What went well
No results
What could be improved
No results
9 people found this helpful
Helpful
Heidi S. in Old Greenwich, CT – May 18, 2016
Ă—Post a ResponseAre you Dr. Marcus Mayus, MD?
Reply Flag
Hard to see, try to make appointments well in advance. Once in, however, excellent care.
What went well
No results
What could be improved
No results
6 people found this helpful
Helpful
C in Stamford, CT – May 03, 2016
Ă—Post a ResponseAre you Dr. Marcus Mayus, MD?

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About Me

Biography

Dr. Marcus Mayus, MD is a Internal Medicine Specialist in Cos Cob, CT. He is affiliated with medical facilities Greenwich Hospital and Stamford Hospital....Read more

Specialties

  • Internal Medicine

Board Certifications

  • Internal Medicine
Learn why a board certification matters

Education

New York Medical College
Medical School

Awards

  • Healthgrades Honor Roll
Learn more about recognized doctors

Frequently Asked Questions

Does Dr. Marcus Mayus, MD accept my insurance?

Use the Healthgrades insurance check to verify if Dr. Mayus accepts your insurance.

What are Dr. Marcus Mayus, MD's top areas of care?

Dr. Mayus frequently treats Lipid Disorders, Hyperlipidemia, and Dyslipidemia. See all procedures and conditions Dr. Mayus treats.

Where is Dr. Marcus Mayus, MD's office located?

Dr. Mayus' office is located at 31 River Rd Ste 200, Cos Cob, CT 06807. Find other locations and directions on Healthgrades.

Does Dr. Marcus Mayus, MD offer telehealth services?

Dr. Mayus has not yet indicated whether they offer telehealth services. Please contact the office to check for availability/eligibility.

How can I make an appointment with Dr. Marcus Mayus, MD?

Find contact information here to make an appointment.

Locations

Practice

Francis X Walsh MD PC31 River Rd Ste 200 Cos Cob, CT 06807
1

Affiliated Hospitals

Dr. Mayus is affiliated with the following hospitals. Select a hospital below to learn more.

Learn more about how Healthgrades measuresHospital Quality.

Greenwich Hospital

Greenwich, CT

84% Patient Experience Rating, 15% higher than the national average

4 Awards Received

Award Highlight: Outstanding Patient Experience Award™ (2021)

Stamford Hospital

Stamford, CT

77% Patient Experience Rating, 8% higher than the national average

4 Awards Received

Award Highlight: Outstanding Patient Experience Award™ (2020)