Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Claudia Carvajal Guillen, RN, CNP

Nurse Practitioner in Chelsea, MA · enumerated 2014.

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

National Provider Identifier

1295153369

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Registry record

Entity type Individual (Type 1)

Name Claudia Carvajal Guillen

Credential RN, CNP

Sex Female

Practice address 151 Everett Ave, Chelsea, MA, 02150

Phone (617) 726-8055

Enumeration date Apr 4, 2014

Last updated in NPPES Jan 8, 2020

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License RN2281078 (MA) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN2281078 (MA) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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

Where does Claudia Guillen practice?

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

What is the NPI number for Claudia Guillen?

The National Provider Identifier (NPI) for Claudia Guillen is 1295153369, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Bonnie Fishman Clinical Social Worker · Chelsea, MA NPI 1568455285 Kevin Bravo Emergency Medicine Physician · Chelsea, MA NPI 1336137363 Judith Fisch Internal Medicine Physician · Chelsea, MA NPI 1487644126 Nancy Serrell Internal Medicine Physician · Chelsea, MA NPI 1528058278 Wynne Armand Internal Medicine Physician · Chelsea, MA NPI 1497745939 Laura Benzaquen Cardiovascular Disease Physician · Chelsea, MA NPI 1558351015 Lynne Brodsky Geriatric Medicine (Internal Medicine) Physician · Chelsea, MA NPI 1588655419 Ilse Rieger Pediatrics Physician · Chelsea, MA NPI 1861483323

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-01-08.