Westchester Internal Medicine PC
NPI 1245279660 · Internal Medicine Physician · Sleepy Hollow, NY
Westchester Internal Medicine PC is a Internal Medicine Physician organization in Sleepy Hollow, NY (NPI 1245279660).
Provider details
- NPI number
- 1245279660
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Owen O'Neill, President(914) 333-0034
- License
- 176762 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- 2006-06-05
- Last updated
- 2020-08-22
Frequently asked questions
- What is Westchester Internal Medicine PC's NPI number?
- Westchester Internal Medicine PC's National Provider Identifier (NPI) is 1245279660, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Westchester Internal Medicine PC?
- Westchester Internal Medicine PC is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Westchester Internal Medicine PC located?
- Westchester Internal Medicine PC's practice location on file with NPPES is 777 N Broadway, Sleepy Hollow, NY 10591-1000.
- What is Westchester Internal Medicine PC's phone number?
- The practice phone number listed in the NPPES registry for Westchester Internal Medicine PC is (914) 333-0034.
- Who is the authorized official for Westchester Internal Medicine PC?
- The authorized official listed on Westchester Internal Medicine PC's NPPES record is Owen O'Neill, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Westchester Internal Medicine PC's NPI active?
- Yes — Westchester Internal Medicine PC's NPI (1245279660) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.