Donna Grennan, SLP
NPI 1538446836 · Speech-Language Pathologist · Wantagh, NY
Donna Grennan, SLP is a Speech-Language Pathologist provider in Wantagh, NY (NPI 1538446836).
Provider details
- NPI number
- 1538446836
- Entity type
- Individual
- Primary specialty
- Speech-Language PathologistSpeech, Language and Hearing Service Providers
- Credential
- SLP
- Sex
- Female
- Sole proprietor
- No
- License
- 009726 (NY)
Specialties & taxonomies
Speech, Language and Hearing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-11-15
- Last updated
- 2011-11-15
Frequently asked questions
- What is Donna Grennan's NPI number?
- Donna Grennan's National Provider Identifier (NPI) is 1538446836, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donna Grennan's specialty?
- Donna Grennan is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
- Where is Donna Grennan located?
- Donna Grennan's practice location on file with NPPES is 2850 N Jerusalem Rd, Wantagh, NY 11793-1125.
- What is Donna Grennan's phone number?
- The practice phone number listed in the NPPES registry for Donna Grennan is (516) 396-2900.
- Is Donna Grennan's NPI active?
- Yes — Donna Grennan's NPI (1538446836) is active in the NPPES registry as of the last update on 2011-11-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.