Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Abby R Rosenberg

Pediatric Hematology & Oncology Physician in Boston, MA · enumerated 2006.

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

National Provider Identifier

1194833020

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Registry record

Entity type Individual (Type 1)

Name Abby R Rosenberg

Sex Female

Practice address 450 Brookline Ave # Jfb7, Boston, MA, 02215

Phone (617) 632-3000

Enumeration date Aug 29, 2006

Last updated in NPPES Jan 3, 2023

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License ML20008689 (WA) Secondary

2080P0207X Pediatric Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License MD60086938 (WA) Secondary

2080P0207X Pediatric Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 295466 (MA) Primary

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 specialty is Abby Rosenberg?

Abby Rosenberg is registered in NPPES with the primary taxonomy of Pediatric Hematology & Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-01-03.