Dr. Mark J. O\'Connor
- Gender: Male
- Experience: 8 years
- Sole propriator: No
- NPI: 1518300284
Dr. Mark J. O\'Connor M.D.
Internist
He is located at 55 Lake Avenue North in Worcester, MA 01655. Can help patients with the following: Anemia, General Care, Hiatal Hernia, High Blood Pressure, Hot Flashes, Hyponatremia. His National Provider Identifier (NPI) number is 1518300284. Appointment can be made via the phone number (508) 334-3206.
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 - Endocrinology (also registered under: Practitioner - Internal Medicine) .
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.
Looking for more Internists?
Out of the 384 internists in this region, here are 10 randomly selected ones for you to explore.
- Gender: Male
- Address: 55 Lake Avenue North Worcester, 1655, MA
- Gender: Female
- Address: 119 Belmont Street Worcester, 1605, MA
- Gender: Male
- Address: 55 Lake Avenue North Worcester, 1655, MA
- Gender: Male
- Address: 55 Lake Avenue North Worcester, 1655, MA
- Gender: Male
- Address: 55 Lake Avenue North Worcester, 1655, MA
- Gender: Male
- Address: 55 Lake Avenue North Worcester, 1655, MA
- Gender: Male
- Address: 55 Lake Avenue North Worcester, 1655, MA
- Gender: Male
- Address: 55 Lake Avenue North Worcester, 1655, MA
- Gender: Female
- Address: 154 East Main Street Westborough, 1581, MA
- Gender: Female
- Address: 55 Lake Avenue North Worcester, 1655, MA
Questions & Answers
What conditions does Dr. Mark J. O\'Connor treat?
Dr. Mark J. O\'Connor provides treatment for Anemia, General Care, Hiatal Hernia, High Blood Pressure, Hot Flashes, Hyponatremia. For the full list see this list.
Where can you meet with Dr. Mark J. O\'Connor?
Dr. Mark J. O\'Connor's office is located at 55 Lake Avenue North in Worcester, MA 01655.
Does Dr. Mark J. O\'Connor accept insurance?
Unfortunately we don't have any information if Dr. Mark J. O\'Connor accepts insurance.