Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Sean Butler, M.D.
Pediatrics Physician in Norwalk, CT · enumerated 2014.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1578981858
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Registry record
Entity type Individual (Type 1)
Name Sean Butler
Credential M.D.
Sex Male
Practice address 40 Cross St, Norwalk, CT, 06851
Phone (203) 229-2000
Enumeration date Apr 2, 2014
Last updated in NPPES Jul 21, 2022
Taxonomy & licenses
390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is the NPI number for Sean Butler?
The National Provider Identifier (NPI) for Sean Butler is 1578981858, a Type 1 (individual) record in the CMS NPPES registry.
Where does Sean Butler practice?
The practice location on file with NPPES is in Norwalk, CT. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Jaclyn Conelius Nurse Practitioner · Norwalk, CT NPI 1821095613 Norwalk Medical Group, PC Internal Medicine Physician · Norwalk, CT NPI 1700878733 Arthur Yee Infectious Disease Physician · Norwalk, CT NPI 1447242102 Marvin Den Internal Medicine Physician · Norwalk, CT NPI 1659363356 Anthony Coscia Medical Oncology Physician · Norwalk, CT NPI 1689666372 Richard Frank Hematology & Oncology Physician · Norwalk, CT NPI 1174515803 Dennis Huskins Internal Medicine Physician · Norwalk, CT NPI 1144212887 Richard Huntley Internal Medicine Physician · Norwalk, CT NPI 1215929955
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.