Dr. Stephen J Leach , MD
Internal Medicine • Willimantic, CT
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. Stephen Leach has officially deactivated this NPI record and ceased active healthcare practice.
Professional Overview & Biography Verified Profile Summary
Dr. Stephen Leach, MD was a registered Internal Medicine practicing in Willimantic, CT. Throughout an active medical career spanning 19 years, Dr. Leach provided care at the practice location at 37 IVAN HILL ST until profile deactivation on 2025-07-17.
Historical Medicare Part B clinical services included established patient outpatient office visit, new patient outpatient office visit, automated urinalysis test. Public procedure reimbursement records and service volume details are provided below for historical transparency.
Practice Location & Contact Primary Location
37 Ivan Hill St
Willimantic, CT 062262001
Specialty Benchmarks & Practice Insights
Comparative analytics for Internal Medicine in Willimantic, CT
Practicing in Willimantic, CT (2753 Statewide)
In-Person Office Visits Only
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Performed Procedures & Service Volume
Top Medicare Part B procedures performed by this practitioner
| HCPCS Code & Description | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
|
99213
Established patient office or other outpatient visit, typically 15 minutes
|
24 | 23 | $150.00 | $74.41 |
|
99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
|
13 | 13 | $195.00 | $110.32 |
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
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine - Geriatric Medicine
Doctor of Medicine (M.D.)
Nurse Practitioner
Advanced Practice Registered Nurse
Internal Medicine
Doctor of Osteopathic Medicine (D.O.)
Nurse Practitioner - Primary Care
Advanced Practice Registered Nurse
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
Record deactivated on July 17, 2025
NPI status registered as active in NPPES database
Registered at 37 IVAN HILL ST, WILLIMANTIC, CT 062262001 (Tel: 8604239764)
Registered at 37 IVAN HILL ST, WILLIMANTIC, CT 062262001 (Tel: 8604239764)
Recorded as STEPHEN LEACH, M.D.
Internal Medicine (License #019808 in CT)
First registered as active Individual Practitioner in NPPES Database.
Patient & Community Reviews
Verified patient ratings, medical care experiences, and facility photos
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NPI Administrative Meta
Mailing Address
37 Ivan Hill St
Willimantic, CT 062262001
Phone: 8604239764
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