Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ethan A Lerner, M.D.

Q: What is the NPI number for Ethan Lerner?

The National Provider Identifier (NPI) for Ethan Lerner is 1023139276, a Type 1 (individual) record in the CMS NPPES registry.

Dermatology Physician in Charlestown, MA · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1023139276

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Registry record

Entity type Individual (Type 1)

Name Ethan A Lerner

Credential M.D.

Sex Male

Practice address Mass. General Hosp -East, Building 149, 13th St., Charlestown, MA, 02129

Phone (617) 726-4439

Enumeration date Apr 3, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 53699 (MA) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Ethan Lerner?

The National Provider Identifier (NPI) for Ethan Lerner is 1023139276, a Type 1 (individual) record in the CMS NPPES registry.

Where does Ethan Lerner practice?

The practice location on file with NPPES is in Charlestown, MA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.