Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Joel Myron Blumberg, M.D.

Specialist in Greenwich, CT · enumerated 2006.

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

National Provider Identifier

1699718114

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Registry record

Entity type Individual (Type 1)

Name Dr. Joel Myron Blumberg

Credential M.D.

Sex Male

Practice address 55 Holly Hill Ln, Suite 210, Greenwich, CT, 06830

Phone (203) 661-4242

Fax (203) 625-9526

Enumeration date Jun 13, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 015975 (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

What is the NPI number for Joel Blumberg?

The National Provider Identifier (NPI) for Joel Blumberg is 1699718114, a Type 1 (individual) record in the CMS NPPES registry.

Where does Joel Blumberg practice?

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

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