Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Lelan F Sillin, MD
Surgery Physician in Burlington, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1427085315
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Lelan F Sillin
Credential MD
Sex Male
Practice address 41 Mall Rd, Lahey Clinic Department of General Surgery, Burlington, MA, 01805
Phone (781) 744-8831
Fax (781) 744-5636
Enumeration date Jun 27, 2006
Last updated in NPPES Sep 2, 2008
Taxonomy & licenses
208C00000X Colon & Rectal Surgery Physician Allopathic & Osteopathic Physicians · License 144421 (NY) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 00577371 | Medicaid | NY | - |
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
Where does Lelan Sillin practice?
The practice location on file with NPPES is in Burlington, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Lelan Sillin?
The National Provider Identifier (NPI) for Lelan Sillin is 1427085315, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Gene Wong Radiation Oncology Physician · Burlington, MA NPI 1770588923 Keith Thomasset Pharmacotherapy Pharmacist · Burlington, MA NPI 1568468742 Benjamin Chin Emergency Medicine Physician · Burlington, MA NPI 1922006667 Karen Orino Certified Registered Nurse Anesthetist · Burlington, MA NPI 1578562674 Manuel Merino Urology Physician · Burlington, MA NPI 1205836582 Benjamin Tillinger Cardiovascular Disease Physician · Burlington, MA NPI 1598759961 Jacqueline Danis Nurse Practitioner · Burlington, MA NPI 1972597599 Pierre Chahraban Cardiovascular Disease Physician · Burlington, MA NPI 1508851866
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-09-02.