NPPES file of Aug 9, 2026

Joseph Neff, CCC-SLP

Speech-Language Pathologist · San Francisco, CA

Joseph Neff, CCC-SLP is a speech-language pathologist with a practice address in San Francisco, California, and NPI 1285146357, issued on Oct 30, 2017. Check the license (California 23983, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1285146357
Name
Joseph Neff
Credential
CCC-SLP
Primary taxonomy
Speech-Language Pathologist 235Z00000X
License number
23983 CA
Self-reported in NPPES; status is on the state search
Practice location
450 Stanyan St, San Francisco, CA 94117
Phone
(415) 668-1000
Enumerated
Oct 30, 2017
Record last updated
Mar 17, 2018 (not updated in 8 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest speech-language pathologist records → All 13,141 in California → Look up another NPI →

Also registered at 450 Stanyan St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Blakney Adkins, MS OTR/LOccupational Therapist1881249522
  2. Leigh Allen, MSPTPhysical Therapist1982821229
  3. Mariam Amin, M.DStudent in an Organized Health Care Education/Training Program1588027981
  4. David Andino-Nieves, MDInternal Medicine Physician1639515638
  5. Allison AngurenStudent in an Organized Health Care Education/Training Program1376121152
  6. Nadine Antebi, PTNeurology Physical Therapist1962373753

Verify Joseph Neff in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 23983    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Joseph Neff among 13,141 speech-language pathologist records in California

Joseph Neff, CCC-SLP is one of 13,141 speech-language pathologist records with a practice address in California. 3% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2017, is newer than 36% of them.

  • NPI issued2017 · 36% of these records are older, 59% newer
  • In a Medicare fileNo · 3% of these records are
  • In the CMS Doctors and Clinicians fileNo · 4% of these records are
  • Record last updated2018 · 46% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 235Z00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Speech-Language Pathologist providers in California

There are 13,141 speech-language pathologist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 13,141 in California → Every provider in San Francisco → Speech-Language Pathologist nationwide →

The 8 speech-language pathologist records with the nearest ZIP codes

  1. Diane Abatemarco, SLP-CFSan Francisco, CA 941171457710964
  2. Ashley Ahern, M.S., CF-SLPSan Francisco, CA 941171558727586
  3. Christina De Quero, M.S. CCC-SLPSan Francisco, CA 941171407220650
  4. Jennifer Hodges, SLPSan Francisco, CA 941171982245908
  5. Madeleine Miller, MS, CF-SLPSan Francisco, CA 941171407378318
  6. Claire Nuccio, MS, CCC-SLPSan Francisco, CA 941171568913531
  7. Alexa PoeterSan Francisco, CA 941171063928604
  8. Camille SaffelSan Francisco, CA 941171972185213

Common questions

What is Joseph Neff, CCC-SLP's NPI number?

Joseph Neff, CCC-SLP's National Provider Identifier (NPI) is 1285146357, issued on Oct 30, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Joseph Neff, CCC-SLP located?

The NPPES record lists a practice address at 450 Stanyan St, San Francisco, CA, 94117. Phone: (415) 668-1000. Providers update this record themselves, so call before visiting.

How can I verify Joseph Neff, CCC-SLP's license?

NPPES lists California license number 23983, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.