Summary

William O'Brien is a healthcare provider with Mass General Brigham who is committed to delivering compassionate, patient-focused care.

Quick Facts

  • accepting new patients
  • 2.3
  • 41 years of experience
  • 50 insurance plans accepted
  • speaks English, Spanish
  • University Hospital Health System
  • 2 written reviews
  • 2 specialties
  • 17 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 2 office locations

Office Locations

Dr. William O'brien has 2 locations

Dr. William O'brien

500 Merrimack StLawrence, MA 01843
Mon8:30 am - 5:00 pm
Tue8:30 am - 5:00 pm
Wed8:30 am - 5:00 pm
Thu8:30 am - 5:00 pm
Fri8:30 am - 5:00 pm
SatClosed
SunClosed

Dr. William O'brien

260 Merrimac StNewburyport, MA 01950
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. William O'brien, MDDr. Charles S Mills, MDDr. Ronenn Roubenoff, MDDr. Matthew David Heller, MD
RheumatologyGeriatric MedicineRheumatologyInternal Medicine
Accepts New Patients
2.3 
3.8 
41 Years of Experience 47 Years of Experience 43 Years of Experience 56 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English, Spanish
Lawrence , MAManchester , NHCAMBRIDGE , MAPeabody , MA
Med School: Medical College Of Wisconsin Med School: Tufts University School Of Medicine Med School: Northwestern University Feinberg School Of Medicine Med School: Tufts University School Of Medicine
Current Profile
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Insurance Plans Accepted by Dr. William O'brien

  • Aetna
  • AmeriHealth - Medicaid
  • AmeriHealth - Medicaid (Managed)
  • Anthem Blue Cross
  • Anthem Blue Cross - Medicaid
  • Anthem Blue Cross - Medicaid (Managed)
  • Aultcare
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield - Medicaid
  • Buckeye Health Plan - Medicaid
  • Buckeye Health Plan - Medicaid (Managed)
  • CareSource
  • CareSource - Medicaid
  • CareSource - Medicaid (Managed)
  • CHAMPVA
  • Cigna
  • Devoted Health
  • GEHA
  • Geisinger Health Plan
  • Golden Rule
  • Humana
  • Humana - Medicaid
  • Humana - Medicaid (Managed)
  • Humana - Medicare (Advantage HMO)
  • MDwise
  • Medica
  • Medicaid - Medicaid
  • Medicaid - Medicaid (Managed)
  • Medical Mutual
  • Medicare
  • Medicare - Medicare
  • Meritain Health
  • Molina Healthcare
  • Molina Healthcare - Medicaid
  • Molina Healthcare - Medicaid (Managed)
  • Optum Health
  • Oscar Health Insurance
  • STLDentalPlan| LLC
  • SummaCare
  • Three Rivers Providers Network (TRPN)
  • Three Rivers Providers Network (TRPN) - Medicare
  • Tricare
  • UnitedHealthcare
  • UnitedHealthcare - Medicaid
  • UnitedHealthcare - Medicaid (Managed)
  • UnitedHealthcare - Medicare
  • UnitedHealthcare - Medicare (Advantage HMO)
  • UnitedHealthcare Oxford
  • UPMC Health Plan
  • Valor Health Plan

Medical Specialties

Dr. William O'brien has the following 2 specialties

Specialty Expertise

Dr. William O'brien has the following 17 areas of expertise

  • Appendicitis
  • Barrett Esophagus
  • Breast Cancer
  • Breast Diseases
  • Colorectal Cancer
  • Crohn's Disease
  • Gallbladder Diseases
  • Gallstones
  • Hemorrhoids
  • Hernia
  • Hiatal Hernia
  • Melanoma
  • Metastatic Breast Cancer
  • Pancreatic Diseases
  • Rheumatologist
  • Surgery
  • Ulcerative Colitis

Certifications, License, & Education

41 Years Experience

MEDICAL LICENSE

Medical Doctor, Ohio, 2026, Expired

EDUCATION & TRAINING

Residency

University Hospital Health System

Medical School

Medical College Of WisconsinGraduated in 1985

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Frequently Asked Questions

Which hospitals is Dr. William O'brien affiliated with?
Dr. William O'brien is affiliated with Cleveland Clinic Hillcrest Hospital.
Does Dr. William O'brien accept my insurance?
You can see the insurance plans that Dr. William O'brien accepts on their Vitals profile.
How can I make an appointment with Dr. William O'brien?
You can find contact information for Dr. William O'brien here on Vitals.
What languages does Dr. William O'brien speak?
Dr. William O'brien speaks English and Spanish.
Does Dr. William O'brien accept virtual/telehealth appointments?
Dr. William O'brien has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.

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