Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Johnnilynn Massucco, CRNA

Certified Registered Nurse Anesthetist in West Palm Beach, FL · enumerated 2010.

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

National Provider Identifier

1821399494

Verified

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Registry record

Entity type Individual (Type 1)

Name Mrs. Johnnilynn Massucco

Credential CRNA

Sex Female

Practice address 901 45th St, West Palm Beach, FL, 33407

Phone (561) 844-6300

Enumeration date Nov 12, 2010

Last updated in NPPES Apr 23, 2013

Taxonomy & licenses

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License RN3232392 (FL) Primary

CRNA · Certified Registered Nurse Anesthetist: An advanced practice nurse specializing in anesthesia care. About the CRNA credential

Other identifiers

Identifier	Type	State	Issuer
G00SD	Other	FL	BCBS

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 Johnnilynn Massucco?

Johnnilynn Massucco is registered in NPPES with the primary taxonomy of Certified Registered Nurse Anesthetist. 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-23.