Summary

Dr. Daniel Oneill is a family medicine and internal medicine physician with 34 years of experience caring for patients. He earned his medical degree from Renaissance School of Medicine at Stony Brook University and completed his residency at United States Naval Medical Center. Dr. Oneill is fluent in both English and Spanish, allowing him to serve diverse patient populations.

Dr. Oneill practices at Day Kimball Hospital and sees patients in Putnam, Connecticut. He specializes in managing complex conditions such as type 2 diabetes, heart failure, and chronic kidney disease. His treatment approach includes physical therapy, strength training, and manual therapy to help patients improve their overall health and mobility. Patients have given Dr. Oneill an average rating of 3.2 out of 5 stars on Vitals.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 3.1
  • 34 years of experience
  • speaks English, Spanish
  • United States Naval Medical Center
  • 5 written reviews
  • 2 specialties
  • 7 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 3 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Daniel William Oneill has 3 locations

Day Kimball Medical Group

7 Kennedy DrPutnam, CT 06260
Mon9:00 am - 5:00 pm
Tue9:00 am - 5:00 pm
Wed9:00 am - 5:00 pm
Thu9:00 am - 5:00 pm
Fri9:00 am - 5:00 pm
SatClosed
SunClosed

Legacy Medical Group-Northwest

1130 NW 22nd Ave Ste 220Portland, OR 97210

Day Kimball Healthcare

320 Pomfret StPutnam, CT 06260

Compare with Similar Doctors

Dr. Daniel William Oneill, MD
Nicole Baldwin, APRN, FNP-BC
Christine Seidell, APRN, FNP-BC
Helix Virtual Care
Dr. Daniel William Oneill, MDNicole Baldwin, APRN, FNP-BCChristine Seidell, APRN, FNP-BCHelix Virtual Care
Family MedicineFamily MedicineFamily MedicineFamily Medicine
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
3.1 
3.7 
34 Years of Experience 8 Years of Experience 4 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English, Spanish Speaks English Speaks English
Putnam , CTOrlando , FLDanbury , CTBoca Raton , FL
Med School: Renaissance School Of Medicine At Stony Brook University
Current Profile
View Profile View Profile View Profile

Insurance Plans Accepted by Dr. Daniel William Oneill

  • Accepts Medicare
  • Accepts Medicaid

Medical Specialties

Dr. Daniel William Oneill has the following 2 specialties

Specialty Expertise

Dr. Daniel William Oneill has the following 7 areas of expertise

  • Check-up
  • Heartburn
  • Immunization
  • Internal Medicine
  • Physical
  • Vaccination
  • Weight Loss

Certifications, License, & Education

34 Years Experience

Dr. Daniel William Oneill holds an expired medical license in the state of Connecticut.

Medical License

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

Education & Training

Residency

Completed their residency at United States Naval Medical Center.

Medical School

Graduated from Renaissance School Of Medicine At Stony Brook University in 1992.

NPI Number

Dr. Oneill's NPI number is 1972578508.

Similar doctors

Frequently Asked Questions

Does Dr. Daniel Oneill accept my insurance?
You can see the insurance plans that Dr. Daniel Oneill accepts on their Vitals profile.
Does Dr. Daniel Oneill accept virtual/telehealth appointments?
Dr. Daniel Oneill has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Is Dr. Daniel Oneill accepting new patients?
Dr. Daniel Oneill is accepting new patients on Vitals. View Dr. Daniel Oneill's profile on Vitals to make an appointment.
Where is Dr. Daniel Oneill's office located?
Dr. Daniel Oneill's office is located at 7 Kennedy Dr, Putnam, CT, 06260.
What languages does Dr. Daniel Oneill speak?
Dr. Daniel Oneill speaks English and Spanish.

Ensuring Data Transparency and Trust: A Guide to Vitals Doctor Listings and Reviews

Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.

Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.

Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.