Mr. Henry Ntoro
Psychiatrist
300 Baker Ave Ste 300
Concord, MA 01742
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Availability last updated 01/31/2026
Mr. Henry Ntoro
Psychiatrist
300 Baker Ave Ste 300
Concord, MA 01742
With more than 40 years of clinical experience, Ronald P. Winfield, MD, is an expert psychiatrist who specializes in transcranial magnetic stimulation (TMS), psychopharmacology, and the treatment of mood disorders. He is the founder and the director of TMS services at Greater Lowell Psychiatric Associates, LLC, which serves the community of North Chelmsford, Massachusetts.
Dr. Winfield earned his medical degree at Harvard Medical School in Boston. He completed his residencies in psychiatry at the Veteran’s Administration Medical Center as well as the Tufts University Medical Center in Boston.
Dedicated to providing holistic, integrative care using innovative techniques, Dr. Winfield designs personalized treatment plans to address depression, anxiety, bipolar disorder, and many other conditions.
An expert with TMS, Dr. Winfield, helps many patients restore their quality of life through this innovative procedure, especially those patients with depression who haven’t found other treatments to be effective. He strives to educate and empower people so they can be active participants in their mental health care.
Dr. Winfield is board-certified in both general and forensic psychiatry. He is affiliated with Lowell General Hospital in Lowell, Massachusetts.
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