Dr. N. Thomas LaCava, MD


360 W Boylston St, Rm 107, West Boylston, Massachusetts, 01583

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Health Clinic

Dr. LaCava has committed his practice to helping patients struggling with Chronic Fatigue Syndrome, multiple chemical sensitivities, Lyme Disease, multiple allergies and other chronic complex illnesses. He is known and recognized for uncovering the causes of diseases and unwellness and helping to restore healthy function where usual medical care has failed to do so.

Most of the patients we encounter have had their symptoms for months or even years. They have tried and failed with conventional approaches to their problems and have often seen many other practitioners without success. Our holistic approach uses an integrative functional medicine model to uncover the underlying root cause of disease which might be related to chronic infections, environmental toxicity, genetic susceptibilities and hormonal or nutritional imbalances. Our personalized treatment plans utilize more effective and less invasive treatment methods with the goal of restoring the body’s natural healing abilities.

N. Thomas LaCava, M.D., Comprehensive Environmental Medicine, Pediatric Primary Care

Dr LaCava has been in practice for over 40 years and is devoted to helping the hard-to-diagnose and hard-to-treat chronically ill patients. He is board certified in Environmental Medicine, which focuses on defining and treating the causes of the disease. His treatments include dietary restructuring, allergy shots, intravenous nutrition, chelation therapy, detoxification, bio-identical hormone replacement and oral nutritional supplementation. Dr LaCava completed a fellowship in neurology and continues with this interest in his current practice treating chronic Lyme disease, mold and chemical toxicities, as well as other neurotoxic disorders.

Education: B.S., University of New Hampshire, Durham, N.H., 1966; M.D., Saint Louis University School of Medicine,

Saint Louis, Missouri, 1972

Internship/Residency: Intern in Pediatrics, Hahneman Medical College and Hospital, Philadelphia, P.A., 1972-1973;

Residency in Pediatrics, Hahneman Medical College and Hospital, Philadelphia, P.A., 1973-1974

Fellowship: Clinical Fellow in Child Neurology, Saint Christopher's Hospital for Children, Philadelphia, P.A.,


Academic Appointment: Instructor in Pediatrics, UMASS Medical School, 1982-Present

Membership and Office in Professional Associations: Worcester District Medical Society/Grievance Committee

Chairman, Massachusetts Medical Society, American College of Advancement in Medicine, American Academy of Environmental Medicine (Fellowship/Member Board of Directors), Christian Medical Society, American Scientific

Affiliation, Broda Barnes Research Foundation

Licensure: State of Massachusetts and New Hampshire

Board Certification: American Board of Environmental Medicine, American Board of Pediatrics

Recent Conferences Attended:

American Academy of Environmental Medicine - October 2016

International Lyme and Associated Diseases Society (ILADS) annual scientific conference

Pan American Allergy Society - March 19-22, 2015

Mycotoxins and Chronic Disease Seminar - January 19, 2013 - Sponsored by The Institute for Medical Studies (IMS)


Dr. N. Thomas LaCava, MD Reviews

Patient Testimonials

8 Testimonials

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"Dr. LaCava is the ONLY physician to diagnose and successfully treat my
chronic condition. I feel better than I have in 40 years!"

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Was this testimonial helpful? 5
Dear Dr. LaCava and Staff - This message/review is just about 5 months overdue. I saw Dr. LaCava after struggling with a strange set of symptoms for the better part of a year. I saw almost a dozen doctors...from GPs, to an ER doc, urgent care docs, two neurologists, two chiropractors...and no one could tell me what was wrong. Most told me I had a clean bill of health or it was just anxiety. I am not one to complain about feeling ill unless I really feel terrible. I am a health nut, I eat well, and I'm very active...and I am 32. Finally! A doctor not only *believed* me, but took the time to listen to me. His office took a full, detailed medical and nutritional history on me (who does that these days). The two appointments I had covered the span of a couple hours +, not the rushed, in-and-out, 15 minute appointments I had become accustomed to. Not only was I listened to, but there was genuine concern for my well being. They ordered a slew of tests and those came back with further information on what was going on with me. He recommended a treatment plan, and gave me the tools I needed to take control over my health. A couple months into the plan, coupled with things I was doing on my own now that I had a proper diagnosis, I started to feel better. As I'm writing this, I can say I am 99% symptom free. I am so grateful for the compassion from Dr. L and his entire staff. The reason you haven't heard from me is, well, I'm feeling good! THANK YOU!!!

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"I suffered from one of the most common and easily diagnosable female ailments for years.
I saw an Ob/GYN, PCP, Endo; I nearly gave up. He spent 2.5 hrs with me at our first
appointment. He diagnosed me instantly, as every symptom was classic. Although he
ordered a multitude of blood tests, he treated me immediately. I found relief within weeks, for
5+ years of 'mystery' ailments. I've never seen anyone else since. He saved my quality of life,
and I recommend him to everyone I know. He runs late sometimes, because he spends
quality time with his patients; and he's worth it. I'm so grateful. He's a great listener, and I trust his judgement."

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Both of my children have had health issues that began at birth and I myself have
struggled with chronic issues as well that only Dr. L was able to help us with despite years of
visiting other so called experts. I appreciate that Dr. L expects you to be responsible and
do your part in regards to your wellness...his manner could be described as abrupt, but
we have never found him off putting. He is no nonsense with adults and straight forward,
but highly supportive. With my children he has always been terrific..they love him and
everyone on the staff. I will be forever grateful to Dr. LaCava for giving my children a healthy
start in life and for supporting our wellness choices.

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I owe this doctor so much for giving me back my life. I truly thought I was dying. As I stated above I was losing the will to live as well and to continue on. This is such a tough and discouraging way to feel with this illness. I have a husband, 4 children, 16 grandchildren, and 4 great grandchildren. Remember, this has gone on for 13+ years. Here I am trying to help others not to go through the same illness. Not only is this disease devastating but extremeley debilitating. It is so imporant not to give up even though it is very tempting. You get so weak and feel so ill; you do not want to continue to fight the illness anymore. These words are easier said than done. I will always be grateful to Dr. LaCava for helping me through all the agony, torture, unfairness, and unprofessionalism I had been put through for so many years by other specialist MD's. The most important thing to me was going into Dr. LaCava's office and HE BELIEVED ME... he knew I was sick... he didn't say I was crazy and go home... and he was willing to spend his time to get me back on my feet. Again, I say he spent 3 1/2 hours on my first visit and never pushed me out of his office as if there was something more important for him to tend to. I was treated with dignity, compassion, and understanding. Dr. LaCava never made me feel that he would let me go without some sort of an answer as others had done to me. He gave me at least some hope and faith to cling to at that time."

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Dr. Lacava saved my life! It took me 16 years to take my Lyme disease and co infections doctor to take me seriously

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I struggle for 15 years with many symptoms from Lyme Disease. After many years of Infections Disease doctors telling me I was fine, Too young to have whatever symptoms I was in about. I was hopeless. My 1st visit with Dr. Lacava was my 1st glimpse of hope, he listen and he believed me. It took time but he and all the doctors he had recommended have me functioning again. Im scared to think what my condition would be now if I didnt find him.

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As you know, B.. is a 4 and a half year old boy who has been suffering from asthma for 3 and a half years. His symptoms include cough, nasal congestion, headaches, upset stomach, and wheezing. He also has eczema. He has been on many medications since then, including inhalers. Whenever he came down with a cold, the wheezing would start and eventually he would end up with an asthma attack and an emergency room or office visit would be necessary.

Upon his last visit to your office when he was experiencing difficulty, you ran some blood work for food allergies. The results were normal with the exception of a slight indication of corn allergy. At that time, I found out that B..'s daily diet consisted of a lot of corn or foods made from corn. We decided to put him on a corn-free diet for a month. I was very skeptical of this, but decided to give it a try.

I am very happy to say that your advice did him a world of good. He has not been on any medications for over a month - not even inhalers. His cough is gone as well as his other symptoms. He still maintains a little eczema, but not as bad as it was.

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