Dr. Demetrius Rizos, DO

Dr. Demetrius Rizos, DO

Internal Medicine  |  
Male  |  
Age 48
Insurances AcceptedSave
Dr. Demetrius Rizos, DO is an internal medicine doctor who practices in Methuen, MA. He is 48 years old and has been practicing for 19 years.

380 Merrimack St

Methuen, MA 01844

Contact Information

(978) 685-5627

Insurance Accepted

  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of Louisiana
  • Blue Cross Blue Shield of Massachusetts
  • First Health (Coventry Health Care)
  • Harvard Pilgrim Health Care
  • Tufts Health Plan

*Please verify this information when scheduling an appointment.

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Dr. Rizos' Experience

Dr. Rizos' experience matches your search based on the following criteria:
  • Based on total number of patients treated over the last 12 months
  • Specializes in Internal Medicine
  • Board certified in Internal Medicine and Nephrology
  • No malpractice claims found
  • No sanctions found
  • No board actions found


  • Internal Medicine

Board Certifications

  • Internal Medicine
    Accredited by: American Board of Internal Medicine*
  • Nephrology
    Accredited by: American Board of Internal Medicine*

Conditions Treated

  • Acidosis
  • Acute Kidney Failure
  • Alkalosis
  • Autoimmune Diseases
  • Bone Disorders
  • Brain Disorders
  • Calcium Metabolism Disorders
  • Chronic Kidney Diseases
  • Classic Polyarteritis Nodosa
  • Dehydration
  • Diabetes With Renal Manifestations
  • Diabetic Ketoacidosis
  • End-Stage Renal Disease
  • Gout
  • Hydronephrosis
  • Hypercalcemia
  • Hyperkalemia
  • Hypertension
  • Hypertensive Chronic Kidney Disease
  • Hypertensive Heart and Chronic Kidney Disease
  • Hypokalemia
  • Hypotension (Excluding Maternal)
  • Kidney Disease
  • Kidney Stones
  • Limb Swelling
  • Limb Swelling Caused by Fluid Overload
  • Magnesium Metabolism Disorders
  • Mineral Metabolism Disorders
  • Nephritis and Nephropathy
  • Nephrotic Syndrome
  • Phosphorus Metabolism Disorders
  • Purpura
  • Renal Artery Arteriosclerotic Disease
  • Renal Hyperparathyroidism
  • Systemic Vasculitis
  • Ureteral Stones
  • Vascular Disease
  • Vitamin D Deficiency


Read More


  • Hemodialysis

Background Check

0 Malpractice Claims

No malpractice history found for Massachusetts.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • Nova Southeastern University College Of Osteopathic Medicine
    Medical School | Graduated 1998

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Rizos has no media or publications listed.

Languages Spoken

  • English
  • Greek

Memberships & Professional Affiliations

Dr. Rizos does not have any memberships or affiliations listed. If you are Dr. Rizos and would like to add memberships or affiliations, please update your profile.

Dr. Rizos' Reviews

Likelihood of recommending Dr. Rizos to family and friends
based on 11 total reviews (10 with comments)
Dr. Rizos' Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers Questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
  • Average wait time
    16 to 30 minutes
Patient Comments (10)
Bethenhausen, TH |
Worst doctor ever. Run do not walk away.
Randolph, MA |
I had a terrible experience with Dr. Rizos. I question his training.
in Lebanon, NH |
This guy saved my life but he'll probably argue about my wife being the one who saved my life. My wife and I love this guy excellent Dr!
in Albuquerque, NM |
Dr. Rizos was nothing short of super. Going through renal failure was difficult for me, fortunately Dr. Rizos was there. The fact than I am still around, 10 years later, and doing incredibly well, I ascribe to no small fact that Demetri was there for me those years ago. Amongst a whole lot of other (above and beyond) things, he bent over backwards to coordinate with my new Transplant Coordinator when I was able to move home to Albuquerque, New Mexico Thank you!
Haverhill, MA |
Patient BEWARE Dr Rizos is not a good doctor. If your an independent woman He is a male Chauvinist He does not do his homework for you. He tell what he know and assumes your insurance will not cover the bill. The communication is bad in this office. He does not like to be told what you know is right. He is not compassionate at all. Works against you. Very uncomfortable doctor. I do not recommended Dr. Rizos I hope this info help's the next patient so you don't waist your time.
Salem, NH |
Horrible. Absolutely horrible. Doesn't look you in the eye. Doesn't listen to a word you say, and assumes that you have a certain illness without having any reason to assume so. I recently went and he wanted me to get a blood test and ex ray done. Never called me with resuults, so I called him and all he kept saying was "there's no red flags here", and "everything's looking good". Wasn't able to actually give me a reason for why I was sick. Doesn't care about his patients, just wants their money
in Methuen, MA |
Our former physician retired so I went on line to research a possible replacement. I was very pleased with what I learned about this excellent physician. He is thorough, knowledgeable, attentive, and sincere. He doesn't mince words and doesn't hesitate to refer a patient to a specialist if he feels it's necessary. That is a sure sign that he sincerely cares and isn't an egoist. He treats me and my husband. He is a jewel. I respect his knowledge and experience.
in Methuen, MA |
I went to Dr. Rizos with a laundry list of issues (mostly all stemming from depression, so I hadn't been taking care of myself in a long time). He helped me get back on my feet and got me feeling normal again. He was sincere, friendly, and compassionate. He's a good person and a good doctor.
in Salem, NH |
Patient beware, office may overcharge or order unnecessary procedures. They apparently do an EKG along with yearly check up for everyone over 30. The procedure is, according to medical consensus, unnecessary in the absence of symptoms and it's often not covered by insurance. I was never given the option to opt out and, after getting the bill, the manager suggested if I'm unhappy I should use a different practice. Also sent me to a lab not covered by my insurance.
in Windham, NH |
I first met Dr. Rizos on 5/11/2016. I was with my sister Donna Orlando. I must say that Dr. Rizos is a GEM. Dr. Rizos is both compassionate and a GOOD GUY. Dr. Rizos talked with about everything. Plus he was in the NAVY! Rick Grelle
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Now Accepting New Patients
Dr. Rizos accepts 6 insurance carriers
  • Blue Cross Blue Shield
    Blue Card PPO
  • Blue Cross Blue Shield of Louisiana
    BlueConnect HMO
  • Blue Cross Blue Shield of Massachusetts
    Preferred Blue PPO
  • First Health (Coventry Health Care)
    First Health (Coventry Health Care) PPO
  • Harvard Pilgrim Health Care
    Harvard Pilgrim Health Care PPO
  • Tufts Health Plan
    Tufts PPO

*Please verify this information when scheduling an appointment.

Hospitals where Dr. Rizos has admitting privileges

Holy Family Hospital
70 East St
Methuen, MA 01844
View Hospital Profile
Lawrence General Hospital
1 General St
Lawrence, MA 01841
View Hospital Profile
North Shore Medical Center
81 Highland Ave
Salem, MA 01970
View Hospital Profile

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