NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

April C Pierce, SLP

Speech-Language Pathologist in San Francisco, CA · enumerated 2021 · practices at University of California, San Francisco.

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

National Provider Identifier

1639767270

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name April C Pierce
Credential SLP
Sex Female
Practice address San Francisco, CA, 94110
Enumeration date Jan 8, 2021
Last updated in NPPES Jan 8, 2021

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

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers Primary
SLP · Speech-Language Pathologist: A licensed clinician treating speech, language, and swallowing disorders. About the SLP 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 April Pierce?
The National Provider Identifier (NPI) for April Pierce is 1639767270, a Type 1 (individual) record in the CMS NPPES registry.
Where does April Pierce practice?
The practice location on file with NPPES is in San Francisco, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →
Justine Underhill Clinical Social Worker · San Francisco, CA NPI 1942377957 University of California, San Francisco Adolescent and Children Mental Health Clinic/Center · San Francisco, CA NPI 1740486315 Austin Yang Clinical Child & Adolescent Psychologist · San Francisco, CA NPI 1063605541 Christina Young Clinical Psychologist · San Francisco, CA NPI 1588978001 Karol Markowitz Marriage & Family Therapist · San Francisco, CA NPI 1104262518 Iveth Cuellar Celallos Student in an Organized Health Care Education/Training Program · San Francisco, CA NPI 1285072777 Nicole Anderson Student in an Organized Health Care Education/Training Program · San Francisco, CA NPI 1972918209 Joshua Alexander Student in an Organized Health Care Education/Training Program · San Francisco, CA NPI 1306240908

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-08.