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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Karen Elline Newbold, M.D.

Pediatrics Physician in Somerville, MA · enumerated 2005.

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

National Provider Identifier

1548268360

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Registry record

Entity type Individual (Type 1)
Name Dr. Karen Elline Newbold
Credential M.D.
Sex Female
Practice address 40 Holland St, Somerville, MA, 02144
Phone (617) 629-6300
Fax (617) 629-6090
Enumeration date Jul 14, 2005
Last updated in NPPES Feb 18, 2021

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 224263 (MA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
2102030 Medicaid MA -

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

What is the NPI number for Karen Newbold?
The National Provider Identifier (NPI) for Karen Newbold is 1548268360, a Type 1 (individual) record in the CMS NPPES registry.
Where does Karen Newbold practice?
The practice location on file with NPPES is in Somerville, MA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-02-18.