Ms. Maritza Nigro

Ms. Maritza Nigro is a Clinical Social Worker provider (Social Worker) practicing in Altadena, CA, registered in the NPPES registry with NPI 1497903017 since 2008.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1497903017
Entity type	Individual (Type 1)
Name	Ms. Maritza Nigro
Sex	Female
Practice address	Altadena, CA, 91001
Phone	6263965920
Fax	6267952662
Enumeration date	2008-09-08
Last updated in NPPES	2013-06-07

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
1041C0700X	Clinical Social Worker	Primary	LCS29588	CA

Copy-ready billing details

Provider: Maritza Nigro
NPI: 1497903017
Taxonomy: 1041C0700X (Clinical Social Worker)
Address: Altadena, CA, 91001

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1912024878	Diana Ruano	Individual	Social Worker	Altadena, CA
1528202207	Philip Spradling	Individual	Marriage & Family Therapist	Altadena, CA
1477886430	Edith Ballard	Individual	Social Worker	Altadena, CA
1689988511	Eunice Juarez	Individual	Social Worker	Altadena, CA
1881902690	Theresa Wilcox	Individual	Pediatric Nurse Practitioner	Altadena, CA
1992015630	Monica Yanez	Individual	Clinical Social Worker	Altadena, CA
1992086425	Raquel Zamora	Individual	Mental Health Counselor	Altadena, CA
1851673024	Candice Grey	Individual	Mental Health Counselor	Altadena, CA

Verify this record

Cross-check NPI 1497903017 against the authoritative CMS record: view Ms. Maritza Nigro on the official NPPES registry .

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 or validate an NPI number.

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 Maritza Nigro?

Maritza Nigro is registered in NPPES with the primary taxonomy of Clinical Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2013-06-07.