Dr. Gregory Williams, MD

Infectious Disease MedicineMaleAge 62

Dr. Williams
Accepting new patients

Reliant Medical Group

225 New Lancaster Rd Leominster, MA 1453

Make an Appointment

(508) 334-1000

Dr. Gregory Williams, MD is a Infectious Disease Specialist in Leominster, MA and has over 35 years of experience in the medical field. He graduated from New York Medical College medical school in 1986. He is affiliated with Saint Vincent Hospital. He is accepting new patients. Be sure to call ahead with Dr. Williams to book an appointment.

Healthgrades Provider Compare™

Quickly compare more Infectious Disease Specialists in your area

At a Glance

  • Practices at Highly Recommended Hospital
    Patients recommend this hospital to family and friends. See hospitals

Experience and Background Checks


Background Check

No malpractice claims found for Massachusetts
No disciplinary actions found for the years we collect data
No board actions found for the years we collect data
Learn more about background checks

Experience Check

Check if Dr. Williams treats your condition or procedure

Dr. Williams' conditions and procedures:

  • Bacterial Sepsis
  • Brain Abscess
  • Diabetes Screening
  • HIV (Human Immunodeficiency Virus)
  • Immunization Administration
  • Liver Function Test
  • Mycobacterial Lung Infection
  • Osteoporosis Screening
  • Sepsis
  • Syphilis Infections

Insurance Check

Search for your insurance provider

Dr. Williams accepts

Accepted insurance can change. Please double-check when making an appointment.

(508) 334-1000

Dr. Williams accepts the following insurance:

Aetna HMO
Choice Plus POS II
National (BlueCard) PPO
Blue Cross Blue Shield
Blue Card PPO
Blue Cross Blue Shield of Massachusetts
Preferred Blue PPO
CareFirst Blue Cross Blue Shield
HealthyBlue 2.0
HealthyBlue Advantage
Cigna HMO
Cigna PPO
Open Access Plus
First Health (Coventry Health Care)
First Health (Coventry Health Care) PPO
Harvard Pilgrim Health Care
Harvard Pilgrim Health Care PPO
MultiPlan PPO
Tufts Health Plan
Tufts PPO

Dr. Williams' Reviews

Likelihood to recommend Dr. Williams


Based on 2 ratings

5 Stars
4 Stars
3 Stars
2 Stars
1 Star
healthgrades logo

Leave a review

How likely are you to recommend
Dr. Williams
(Select your rating)

Leave a review

How was your experience with Dr. Williams?

About Me


Ever since he was a child, Dr. Greg T. Williams knew he wanted to be a doctor. "It was just one of those things, I always knew I wanted to be in medicine....Read more


  • Infectious Disease Medicine

Board Certifications

  • Infectious Disease
  • Internal Medicine


U Mass Med Ctr
Fellowship Hospital
Ohio State University
Residency Hospital
Ohio State University
Internship Hospital
New York Medical College
Medical School


Frequently Asked Questions

Is Dr. Gregory Williams, MD accepting new patients?

Dr. Gregory Williams, MD generally accepts new patients on Healthgrades. You can see Dr. Williams' profile to make an appointment.

Does Dr. Gregory Williams, MD accept my insurance?

Use the Healthgrades insurance check to verify if Dr. Williams accepts your insurance.

What are Dr. Gregory Williams, MD's top areas of care?

Dr. Williams frequently treats Syphilis Infections, HIV (Human Immunodeficiency Virus), and Bacterial Sepsis. See all procedures and conditions Dr. Williams treats.

Where is Dr. Gregory Williams, MD's office located?

Dr. Williams' office is located at 225 New Lancaster Rd, Leominster, MA 1453. Find other locations and directions on Healthgrades.

Does Dr. Gregory Williams, MD offer telehealth services?

Dr. Williams has not yet indicated whether they offer telehealth services. Please contact the office to check for availability/eligibility.

How can I make an appointment with Dr. Gregory Williams, MD?

Find contact information here to make an appointment.


Reliant Medical Group

Leominster Location225 New Lancaster Rd Leominster, MA 1453

Reliant Medical Group

Worcester Medical Center123 Summer St # 220 Worcester, MA 01608

Affiliated Hospitals

Dr. Williams is affiliated with the following hospital. Select the hospital below to learn more.

Learn more about how Healthgrades measuresHospital Quality.

Saint Vincent Hospital

Worcester, MA

70% Patient Experience Rating, 1% higher than the national average

1 Award Received