Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Carol L Katz, APRN

Nurse Practitioner in Cambridge, MA · enumerated 2007.

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

National Provider Identifier

1871710137

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Registry record

Entity type Individual (Type 1)

Name Carol L Katz

Credential APRN

Sex Female

Practice address 1493 Cambridge St, Zinberg Clinic, Cambridge, MA, 02139

Phone (617) 665-1606

Enumeration date Apr 19, 2007

Last updated in NPPES Feb 7, 2012

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 228718 (MA) Primary

APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN credential

Other identifiers

Identifier	Type	State	Issuer
110076826A	Medicaid	MA	-
NP1393	Other	MA	BCBS 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

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 Carol Katz?

Carol Katz is registered in NPPES with the primary taxonomy of Nurse Practitioner. 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 2012-02-07.