Mary Ann Defalco, NP
NPI 1144208570 · Nurse Practitioner · West Islip, NY
Mary Ann Defalco, NP is a Nurse Practitioner provider in West Islip, NY (NPI 1144208570).
Provider details
- NPI number
- 1144208570
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- License
- F3042641 (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 tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$130 across 5 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-05
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mary Ann Defalco's NPI number?
- Mary Ann Defalco's National Provider Identifier (NPI) is 1144208570, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Ann Defalco's specialty?
- Mary Ann Defalco is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Ann Defalco located?
- Mary Ann Defalco's practice location on file with NPPES is 540 Union Blvd, West Islip, NY 11795.
- What is Mary Ann Defalco's phone number?
- The practice phone number listed in the NPPES registry for Mary Ann Defalco is (631) 669-2555.
- Is Mary Ann Defalco's NPI active?
- Yes — Mary Ann Defalco's NPI (1144208570) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.