Dr. Mark J. O\'Connor
- Gender: Male
- Experience: 9 years
- Graduated from: University Of Massachusetts Medical School
- Graduation year: 2012
- Sole propriator: No
- NPI: 1215297270
Dr. Mark J. O\'Connor JR. M.D.
Internist
He is located at 100 Hospital Road in Leominster, MA 01453. Can help patients with the following: Acute Pain, Chronic Obstructive Pulmonary Disease (COPD), Common Cold, High Blood Pressure, Hot Flashes, Urethritis. His National Provider Identifier (NPI) number is 1215297270. Appointment can be made via the phone number (978) 466-2052. He is affiliated with 1 practices and 2 hospitals.
Conditions treated
Dr. Mark J. O\'Connor, being an internist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Mark J. O\'Connor.
- Abdominal Pain
- Acute Pain
- Anemia
- Arthritis
- Asthma
- Atherosclerosis
- Bladder Control
- Chest Pain
- Cholecystitis
- Chronic Obstructive Pulmonary Disease (COPD)
- Common Cold
- Constipation
- Cystitis
- Diarrhea
- Edema
- Fever
- Gastroesophageal Reflux Disease (GERD)
- General Care
- Headache
- Heart Disease
- Hiatal Hernia
- High Blood Pressure
- Hot Flashes
- Hyperlipidemia
- Hyponatremia
- Influenza
- Inguinal Hernia
- Migraine
- Nausea and Vomiting
- Obesity
- Osteoporosis
- Peptic Ulcer
- Prescription Refill
- Urethritis
- Urinary Tract Infection (UTI)
Medicare Enrollment
Dr. Mark J. O\'Connor is enrolled to bill Medicare as a Practitioner - Cardiovascular Disease (cardiology) .
Bills through: Umass Memorial Medical Group Inc
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Studies
UNIVERSITY OF MASSACHUSETTS MEDICAL SCHOOL
Graduated in 2012Additional Specialities
- Resident
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Questions & Answers
Has Dr. Mark J. O\'Connor affiliation with hospitals?
Dr. Mark J. O\'Connor is affiliated with UMASS MEMORIAL MEDICAL CENTER/UNIVERSITY CAMPUS. For the full list of hospitals see this list.
What conditions does Dr. Mark J. O\'Connor treat?
Dr. Mark J. O\'Connor provides treatment for Acute Pain, Chronic Obstructive Pulmonary Disease (COPD), Common Cold, High Blood Pressure, Hot Flashes, Urethritis. For the full list see this list.
Does Dr. Mark J. O\'Connor have affiliation with practices?
Dr. Mark J. O\'Connor is affiliated with Cardiology Internists of Leominster.
Does Dr. Mark J. O\'Connor accept insurance?
Unfortunately we don't have any information if Dr. Mark J. O\'Connor accepts insurance.
Where can you meet with Dr. Mark J. O\'Connor?
Dr. Mark J. O\'Connor's office is located at 100 Hospital Road in Leominster, MA 01453.