Allison Leff, M.A, CCC-SLP
Speech-Language Pathologist · Newtown, PA
Allison Leff, M.A, CCC-SLP is a speech-language pathologist with a practice address in Newtown, Pennsylvania, and NPI 1477811644, issued on Apr 25, 2012. Check the license (Pennsylvania SL008476, as entered in NPPES) with the Pennsylvania board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Allison Leff
- Credential
- M.A, CCC-SLP
- Primary taxonomy
- Speech-Language Pathologist 235Z00000X
- License number
- SL008476 PA
Self-reported in NPPES; status is on the state search - Practice location
- 5 Old Barn CT, Newtown, PA 18940
- Phone
- (215) 321-0669
- Enumerated
- Apr 25, 2012
- Record last updated
- Apr 25, 2012 (not updated in 14 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest speech-language pathologist records → All 7,128 in Pennsylvania → Look up another NPI →
Verify Allison Leff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
Search for license SL008476Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Allison Leff among 7,128 speech-language pathologist records in Pennsylvania
Allison Leff, M.A, CCC-SLP is one of 7,128 speech-language pathologist records with a practice address in Pennsylvania. 4% 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 2012, is newer than 36% of them.
- NPI issued2012 · 36% of these records are older, 60% newer
- In a Medicare fileNo · 4% of these records are
- In the CMS Doctors and Clinicians fileNo · 4% of these records are
- Record last updated2012 · 70% 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 Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
47 speech-language pathologist records list a practice address in Newtown
They are 47 of the 866 NPPES records with a practice address in Newtown, and 7,128 speech-language pathologist records in Pennsylvania. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 7,128 in Pennsylvania → Every provider in Newtown → Speech-Language Pathologist nationwide →
The 8 speech-language pathologist records with the nearest ZIP codes
- Miriam Aronson, M.A., CCC-SLPNewtown, PA 189401871604363
- Deborah Cassidy, M A, CCC-SLPNewtown, PA 189401548696115
- Bridgett CoombsNewtown, PA 189401255683918
- Nancy CormicanNewtown, PA 189401295921344
- Kristen DobkinNewtown, PA 189401013141464
- Kristen Harper, CCC-SLPNewtown, PA 189401275847501
- Bridget Hosler, MA, CCC-SLPNewtown, PA 189401609155647
- Judith LehrhauptNewtown, PA 189401669408357
Common questions
What is Allison Leff, M.A, CCC-SLP's NPI number?
Allison Leff, M.A, CCC-SLP's National Provider Identifier (NPI) is 1477811644, issued on Apr 25, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Allison Leff, M.A, CCC-SLP located?
The NPPES record lists a practice address at 5 Old Barn CT, Newtown, PA, 18940. Phone: (215) 321-0669. Providers update this record themselves, so call before visiting.
How can I verify Allison Leff, M.A, CCC-SLP's license?
NPPES lists Pennsylvania license number SL008476, as entered by the provider. Search the Pennsylvania 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.
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.