Denise Engrassia, PA
NPI 1285739540 · Physician Assistant · West Islip, NY
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Denise Engrassia, PA is a Physician Assistant provider in West Islip, NY (NPI 1285739540).
Provider details
- NPI number
- 1285739540
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Female
- Sole proprietor
- No
- License
- 004832 (NY)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
- 2006-09-13
- Last updated
- 2008-05-29
Frequently asked questions
- What is Denise Engrassia's NPI number?
- Denise Engrassia's National Provider Identifier (NPI) is 1285739540, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Denise Engrassia's specialty?
- Denise Engrassia is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Denise Engrassia located?
- Denise Engrassia's practice location on file with NPPES is 1000 Montauk Hwy, West Islip, NY 11795-4927.
- What is Denise Engrassia's phone number?
- The practice phone number listed in the NPPES registry for Denise Engrassia is (631) 376-3000.
- Does Denise Engrassia accept Medicare?
- Denise Engrassia is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Denise Engrassia's NPI active?
- Yes — Denise Engrassia's NPI (1285739540) is active in the NPPES registry as of the last update on 2008-05-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.