Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Carolyn Hope Kreinsen, MD

Internal Medicine Physician in Newton, MA · enumerated 2006.

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

National Provider Identifier

1306802798

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Registry record

Entity type Individual (Type 1)

Name Carolyn Hope Kreinsen

Credential MD

Sex Female

Practice address 272 Centre Street, Brigham and Womens at Newton Corner, Newton, MA, 02458

Phone (617) 796-7100

Enumeration date Apr 25, 2006

Last updated in NPPES Dec 15, 2011

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 81382 (MA) 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 Carolyn Kreinsen?

The National Provider Identifier (NPI) for Carolyn Kreinsen is 1306802798, a Type 1 (individual) record in the CMS NPPES registry.

Where does Carolyn Kreinsen practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-12-15.