Summary

Dr. Michael O'Neill is an internal medicine physician who earned his medical degree from American University of the Caribbean School of Medicine. With nine years of experience in practice, he focuses on comprehensive primary care for adult patients. Dr. O'Neill speaks English and provides care that addresses a wide range of internal medicine conditions.

He practices at Hartford HealthCare Medical Group at St. Vincent's Primary Care and Tallwood Men's Health, both located in Fairfield, Connecticut. Dr. O'Neill is affiliated with Nuvance Health Vassar Brothers Medical Center and Saint Vincent's Medical Center. His expertise includes treating nutritional deficiencies such as folate deficiency anemia and vitamin B12 deficiency, as well as managing vitamin D deficiency. He incorporates therapeutic approaches including physical therapy and strength training into patient care plans.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 9 years of experience
  • speaks English
  • American University Of The Caribbean School Of Medicine
  • 1 specialty
  • 2 hospital affiliations
  • 2 office locations
  • Male

Office Locations

Dr Michael O'neill has 2 locations

Tallwood Men's Health

1262 Post RdFairfield, CT 06824
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

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Dr Michael O'neill, MDKerry L. Folkman, MSN, NP-CDr. Peter George Hasapis, MDChristine Petras
Internal MedicineInternal MedicineInternal MedicineInternal Medicine
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4.1 
9 Years of Experience 16 Years of Experience
No Virtual Visit Option Virtual Visit Available No Virtual Visit Option No Virtual Visit Option
Speaks English Speaks English Speaks English, Russian, Spanish Speaks English
Fairfield , CTBrookline , MANew Canaan , CTPort Jefferson Station , NY
Med School: American University Of The Caribbean School Of Medicine Med School: Regis College Med School: Cornell University Medical College
Current Profile
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Insurance Plans Accepted by Dr Michael O'neill

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr Michael O'neill has the following specialty

Certifications, License, & Education

9 Years Experience

Dr Michael O'neill holds an expired medical license in the states of Connecticut and New York.

Medical License

Medical Doctor with an expired medical license in the state of Connecticut that expired in 2026 and an expired medical license in the state of New York that expired in 2026.

Education & Training

Medical School

Graduated from American University Of The Caribbean School Of Medicine in 2017.

NPI Number

Dr O'neill's NPI number is 1356873319.

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Frequently Asked Questions

Does Dr Michael O'neill accept virtual/telehealth appointments?
Dr Michael O'neill has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Where is Dr Michael O'neill's office located?
Dr Michael O'neill's office is located at 111 Beach Rd Ste 1, Fairfield, CT, 06824.
What languages does Dr Michael O'neill speak?
Dr Michael O'neill speaks English.
Which hospitals is Dr Michael O'neill affiliated with?
Dr Michael O'neill is affiliated with Nuvance Health Vassar Brothers Medical Center and Saint Vincents Medical Center.
Does Dr Michael O'neill accept my insurance?
You can see the insurance plans that Dr Michael O'neill accepts on their Vitals profile.

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