Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Allan Herbert Grunberg, M.D.

Anesthesiology Physician in Washington Depot, CT · enumerated 2006.

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

National Provider Identifier

1841217759

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Allan Herbert Grunberg

Credential M.D.

Sex Male

Practice address Washington Depot, CT, 06794

Phone (860) 868-1882

Enumeration date Jul 16, 2006

Last updated in NPPES Nov 2, 2020

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 040375 (CT) 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

Where does Allan Grunberg practice?

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

What is the NPI number for Allan Grunberg?

The National Provider Identifier (NPI) for Allan Grunberg is 1841217759, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-11-02.