Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Denise Ferdenzi, MA, CCC-SLP, DO

Individual provider Speech-Language Pathologist · NPI 1174669659

Dr. Denise Ferdenzi, MA, CCC-SLP, DO is a Pediatric Medicine in West Islip, New York. Qualified in 2013, 13 years ago. Practices as a sole proprietor. Licensed in New York.

Years since qualifying
13
Licensed in
NY
In the registry since
2007
Specialties on file
2
What do these letters mean?
MA — Master of Arts
A graduate arts degree.
CCC-SLP — Certificate of Clinical Competence in Speech-Language Pathology
A speech-language pathologist certified by ASHA.
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

1000 Montauk Hwy
West Islip, NY 11795-4927
Phone: (631) 376-4163
Fax: (631) 376-3420
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Student in an Organized Health Care Education/Training Program (primary) Taxonomy 390200000X
Speech-Language Pathologist Taxonomy 235Z00000X · Licence 014257 (NY)

Record details

NPI number1174669659
Entity typeIndividual (Type 1)
GenderFemale
Credentials MA , CCC-SLP , DO
Sole proprietorYes
NPI enumeratedJanuary 30, 2007
Last updated in NPPESMay 13, 2013

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPEDIATRIC MEDICINE
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Accepts Medicare assignment Not indicated
Practice locations2 on file with Medicare

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