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Astrid Claire Werner, M.D.

Ophthalmology Physician in Boston, MA · enumerated 2014.

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

National Provider Identifier

1831503598

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Registry record

Entity type Individual (Type 1)
Name Astrid Claire Werner
Credential M.D.
Sex Female
Practice address 243 Charles St, Boston, MA, 02114
Phone (617) 573-3689
Enumeration date Jun 19, 2014
Last updated in NPPES Jul 6, 2018

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 274190 (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.

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Frequently asked questions

How do I verify Astrid Werner's NPI record?
Cross-check NPI 1831503598 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1831503598 active?
Yes, as of the latest NPPES snapshot, NPI 1831503598 is active (record last updated 2018-07-06).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-07-06.