Dr. Leonard Steinfeld , MD
Internal Medicine • Suffern, NY
Notice of NPI Deactivation & Inactive Practice Status
According to official public domain records published by CMS (Centers for Medicare & Medicaid Services) in the National Provider Identifier (NPPES) Registry, Dr. Leonard Steinfeld has officially deactivated this NPI record and ceased active healthcare practice.
Professional Overview & Biography Verified Profile Summary
Dr. Leonard Steinfeld, MD was a registered Internal Medicine practicing in Suffern, NY. Throughout an active medical career spanning 20 years, Dr. Steinfeld provided care at the practice location at 2 EXECUTIVE BLVD until profile deactivation on 2026-01-22.
Practice Location & Contact Primary Location
2 Executive Blvd
Suite 406
Suffern, NY 109014164
Specialty Benchmarks & Practice Insights
Comparative analytics for Internal Medicine in Suffern, NY
Practicing in Suffern, NY (12979 Statewide)
In-Person Office Visits Only
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Medical Specialties & State Licenses
NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Practice Associates & Co-Workers
Healthcare professionals and specialists practicing at this location or sharing practice phone/fax
Dentist - General Practice
Doctor of Dental Surgery
Dentist - General Practice
Doctor of Dental Surgery
Dietitian, Registered - Nutrition, Renal
RDCDN
Acupuncturist
Licensed Acupuncturist
Internal Medicine - Cardiovascular Disease
Doctor of Medicine (M.D.)
Registered Nurse
Registered Nurse
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
Record deactivated on January 22, 2026
NPI status registered as active in NPPES database
Registered at 2 EXECUTIVE BLVD, SUITE 406, SUFFERN, NY 109014164 (Tel: 8453579002)
Registered at 20 GRAND ST FL 3, WARWICK, NY 109901035 (Tel: 8459873906)
Recorded as LEONARD STEINFELD, MD
Internal Medicine (License #092679 in NY)
First registered as active Individual Practitioner in NPPES Database.
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NPI Administrative Meta
Mailing Address
20 Grand St Fl 3
Warwick, NY 109901035
Phone: 8459873906
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