Dr. Michael G. Bertos, MD | North Chelmsford, MA | Internist

.about .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Dr. Michael Bertos is an internal medicine physician who earned his medical degree from Boston University School of Medicine and completed his residency at Boston University Medical Center. With 29 years of experience in internal medicine, he focuses on comprehensive adult healthcare and preventive medicine. Dr. Bertos speaks English with his patients.

Dr. Bertos practices at Lowell General Hospital and Lowell General Hospital Saints Campus, with locations in North Chelmsford and Lowell, Massachusetts. He specializes in managing diabetes and chronic kidney disease. His practice also focuses on weight management and breast cancer screening. Patients have given Dr. Bertos an average rating of 4.4 out of 5 stars.

Overview based on verified provider data

accepting new patients
4.4

73 Ratings
29 years of experience
speaks English
Boston University Medical Center
16 written reviews
1 specialty
7 areas of expertise
2 hospital affiliations
3 office locations
Male

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

Based on patient feedback. Read the reviews

Dr. Bertos' Ratings and Reviews

4.4

73 Ratings with 16 written Reviews

Average Wait Time 11 Minutes

How was your appointment with
Dr. Bertos?

Patients’ Perspective

Gave an accurate diagnosis: (40) Did WellNeeds Improvement (2)
Had a good bedside manner: (39) Did WellNeeds Improvement (3)
Spent time with me: (40) Did WellNeeds Improvement (2)
Provided follow-up after the visit: (37) Did WellNeeds Improvement (5)
Flexible scheduling: (37) Did WellNeeds Improvement (5)
Saw me in a timely manner: No Ratings
Staff was courteous: No Ratings

73 ratings & reviews

Sort:

Showing 1 to 10 of 16 reviews

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Wonderful dr. Very caring. Easy to talk to during appt.

March 24th, 2020

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Uncaring and pompous. Time for him to find a different profession.

February 21st, 2019

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

I was a patient of Dr Bertos but had to switch because of my insurance but now I have a different insurance and can now return but as usual, the office staff isn't getting back to me. This was how they also were when I was a patient of his before. The office staff is not very friendly at all. Dr. Bertos is absolutely great, that's why I want to return to him, I wonder if the doctors there know how nasty his office help is.

October 13th, 2016

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

I , REMEMBER MICHEAL, KICKING A SOCCER BALL, AT A YOUNG AGE AND NOW YRS LATER, HE TURNED OUT TO BE A WONDERFUL CARING , DR WHO LISTENS , TO YOU, NOT RUSHING YOU OUT !! I WOULD TELL ANY ONE WHO NEEDS A GOOD DR. GO SEE, DR MIKE.

September 25th, 2016

1 person found this helpful

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Details, family history, life experiences, mental or medical, very thorough. I would highly recommend Dr. Bertos to anyone. He was highly recommended to me by several registered nurses, about 13 yrs ago.

September 23rd, 2016

1 person found this helpful

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Finally found a Dr. I can trust and be comfortable talking to about my medical issues.

April 15th, 2016

1 person found this helpful

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Exceptional Bedside Manner. Everyone in my family goes to him and I have been with him for about 20 years.

September 21st, 2015

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

The best, very caring and patient

January 7th, 2015

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

I am very pleased with Dr. Bertos as a physician. He takes the time to discuss concerns and I feel like he really knows me personally instead of just the peice of paper infront of him. The office staff on the other hand is rude. The woman at the front desk give off a vibe that you are bothering them.

December 20th, 2013

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Dr. Bertos is my 4th doctor, and I have been seeing him for a little over 3 1/2 years. I have Fibromyalgia, and Dr. Bertos is right on top of different medications to use. If I have any complaints about anything, he does not brush you off like a lot of doctors do he listens and will run tests or xrays, what ever it takes to find out what is causing your problem. I was blessed when I found him. So many doctors just brush you off when you tell them something is wrong, but not Dr. Bertos. There is an on site lab for convenience. I would not go anywhere else. He is my doctor for life. The other doctors in this office are awesome to, as well as the nursing staff. I would highly recommend this office and one of the doctors as your primary care doctor.

September 8th, 2012

Merrimack Valley Internal Medicine Associates Pc

20 Research Pl Ste 310North Chelmsford, MA 01863

Tel: (978) 459-2152

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

Lowell General Hospital Saints Campus

1 Hospital DrLowell, MA 01852

Tel: (978) 458-1411

Lowell General Hospital

295 Varnum AveLowell, MA 01854

Tel: (978) 937-6000


Dr. Michael Gregory Bertos, MD	Dr. Sanjiban Dey, MD	Kerry L. Folkman, MSN, NP-C	Eric Harker
Internal Medicine	Internal Medicine	Internal Medicine	Internal Medicine
Accepts New Patients	Accepts New Patients	Accepts New Patients	Accepts New Patients
4.4 (73 Ratings)	0 (0 Ratings)	0 (0 Ratings)	4 (8 Ratings)
29 Years of Experience	8 Years of Experience	16 Years of Experience	25 Years of Experience
No Virtual Visit Option	No Virtual Visit Option	Virtual Visit Available	Virtual Visit Available
Speaks English	Speaks English	Speaks English	Speaks English
North Chelmsford , MA	Stoneham , MA	Brookline , MA	Lyons , CO
Med School: Boston University School Of Medicine	Med School: Dhaka Medical College And Hospital	Med School: Regis College	Med School: Duke University School Of Medicine
Current Profile	View Profile	View Profile	View Profile

Search for your insurance and plan

Accepts Medicare
Accepts Medicaid

Internal Medicine

Check-up
Heartburn
Immunization
Physical
Vaccination
Weight Loss
Weight Loss (non-surgical)

Dr. Michael Gregory Bertos holds an expired medical license in the state of Massachusetts.

Medical License

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

Education & Training

Residency

Completed their residency at Boston University Medical Center.

Medical School

Graduated from Boston University School Of Medicine in 1997.

NPI Number

Dr. Bertos' NPI number is 1043245145.

Dr. Elizabeth Chingreng Kwo, MD
Public Health & General Preventive Medicine
17 Years Exp | Somerville, MA
(0)
Dr. Anil M Vyas, MD
Anesthesiology
55 Years Exp | Worcester, MA
(0)
Dr. Jack Samuel Rowe, MD
Pediatrics
15 Years Exp | Boston, MA
(0)
Dr. Valentin Prieto Centurion, MD
Critical Care Medicine
17 Years Exp | Boston, MA
(0)
Dr. Arwa Badeeb, MD
Diagnostic Radiology
17 Years Exp | Worcester, MA
(0)
Dr. Marja Kristina Samenfeld-Specht, MD
Diagnostic Radiology
21 Years Exp | Boston, MA
(0)
Dr. Seyed-Ehnahal Mansouri, MD
Critical Care Medicine
16 Years Exp | Boston, MA
(0)
Dr. Donald Nicholas Disalvo, MD
Diagnostic Radiology
48 Years Exp | Boston, MA
(0)
Dr. Matthew P Cheng, MD
Infectious Disease
| Boston, MA
(0)
Dr. William R Rodriguez, MD
Infectious Disease
33 Years Exp | Boston, MA
(0)

Which hospitals is Dr. Michael Bertos affiliated with?: Dr. Michael Bertos is affiliated with Lowell General Hospital and Lowell General Hospital Saints Campus.
Where is Dr. Michael Bertos's office located?: Dr. Michael Bertos's office is located at 20 Research Pl Ste 310, North Chelmsford, MA, 01863.
How can I make an appointment with Dr. Michael Bertos?: You can find contact information for Dr. Michael Bertos here on Vitals.
Does Dr. Michael Bertos accept my insurance?: You can see the insurance plans that Dr. Michael Bertos accepts on their Vitals profile.
Is Dr. Michael Bertos accepting new patients?: Dr. Michael Bertos is accepting new patients on Vitals. View Dr. Michael Bertos's profile on Vitals to make an appointment.

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.

Copyright © 2026 Vitals Consumer Services, LLC. US Patent No. 8, 694, 441. All Rights Reserved.
As more fully set forth in this website's terms of use . (1) nothing contained on or offered by or through this website should be construed as medical advice and should not be relied upon for medical diagnosis or treatment. Vitals Consumer Services, LLC ("Vitals"). the provider of this website, does not recommend or endorse any particular healthcare provider whose information or ratings appear on this website; and (2) Vitals has granted you a limited license to access and use this website for your own noncommercial use. You are not permitted to copy, reproduce, distribute, transmit, mirror, frame, scrape, extract, wrap, create derivative works of, reverse engineer, decompile or disassemble any part or aspect of this website.