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L&L Holistic Healing is a family owned medical practice with a focus in the areas of Structural Medicine and Mental Emotional Health. With the use of Medical Acupuncture and Hypnotherapy we have assisted hundreds of patients from all over Long Island over the last ten years. 

Dr. Marc Greenstein, D.Ac., L.Ac., LMT and Diana Renee Greenstein, CH., LMT are committed to providing the highest level of care possible. We are committed to creating a safe, professional environment, that radiates kindness and compassion to all of our patients. We accept major medical insurance and are in network with most insurance providers. We offer a free phone consultation for every new potential patient.  

All treatments are by appointment only

Contact us today!

East Setauket, NY


Saint James, NY


Dr. Marc Greenstein, D.AC is an in-network provider with  United Healthcare Optum Health and Optum Health Networks including the EMPIRE NYSHIP Plan, UHC Choice Plus and UMR. We are in-network providers with Anthem BCBS, and Northwell Direct, Tier 1. Call for information on other insurance plans. 

Click the images below to find our Instagram pages: LandLHolisticHealing and __ll.sanctuary__

or click the following link for: L&L Holistic Healing's Facebook page

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