Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Marjorie Corker-Holzer, MD

Pediatrics Physician in Putnam, CT · enumerated 2008.

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

National Provider Identifier

1609052521

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Registry record

Entity type Individual (Type 1)

Name Marjorie Corker-Holzer

Credential MD

Sex Female

Practice address 320 Pomfret St, Putnam, CT, 06260

Phone (860) 928-6541

Fax (860) 963-6343

Enumeration date Jan 10, 2008

Last updated in NPPES Jan 10, 2008

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 022422 (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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Marjorie Corker-Holzer?

Marjorie Corker-Holzer is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-01-10.