OrganizationActive
William F. Flader MD, PLLC
NPI 1245488337 · Clinic/Center · Setauket, NY
William F. Flader MD, PLLC is a Clinic/Center organization in Setauket, NY (NPI 1245488337).
Provider details
- NPI number
- 1245488337
- Entity type
- Organization
- Primary specialty
- Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- William Flader, President(631) 941-3137
- License
- 163266 (OK)
Specialties & taxonomies
Ambulatory Health Care Facilities
Profile Score
Detailed profile(87/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
100 N Country Rd
Setauket, NY 11733-1300
Phone: (631) 941-3137
Street-level locationGet directions
Mailing address
100 N Country Rd
Setauket, NY 11733-1300
Other names (DBA / former)
- Doing business as
- Natural Health Alternatives
Registry dates
- Enumerated
- 2008-09-03
- Last updated
- 2008-09-03
Frequently asked questions
- What is William F. Flader MD, PLLC's NPI number?
- William F. Flader MD, PLLC's National Provider Identifier (NPI) is 1245488337, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is William F. Flader MD, PLLC?
- William F. Flader MD, PLLC is classified in the NPPES registry as Clinic/Center (Ambulatory Health Care Facilities).
- Where is William F. Flader MD, PLLC located?
- William F. Flader MD, PLLC's practice location on file with NPPES is 100 N Country Rd, Setauket, NY 11733-1300.
- What is William F. Flader MD, PLLC's phone number?
- The practice phone number listed in the NPPES registry for William F. Flader MD, PLLC is (631) 941-3137.
- Who is the authorized official for William F. Flader MD, PLLC?
- The authorized official listed on William F. Flader MD, PLLC's NPPES record is William Flader, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is William F. Flader MD, PLLC's NPI active?
- Yes — William F. Flader MD, PLLC's NPI (1245488337) is active in the NPPES registry as of the last update on 2008-09-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.