William Breen, MD
NPI 1225001613 · Cardiovascular Disease Physician · Woodbury, NY
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Breen, MD is a Cardiovascular Disease Physician provider in Woodbury, NY (NPI 1225001613).
Provider details
- NPI number
- 1225001613
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 137059 (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
- 2006-02-08
- Last updated
- 2012-07-05
Frequently asked questions
- What is William Breen's NPI number?
- William Breen's National Provider Identifier (NPI) is 1225001613, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Breen's specialty?
- William Breen is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is William Breen located?
- William Breen's practice location on file with NPPES is 43 Crossways Park Dr, Woodbury, NY 11797-2006.
- What is William Breen's phone number?
- The practice phone number listed in the NPPES registry for William Breen is (516) 938-3000.
- Does William Breen accept Medicare?
- William Breen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Breen's NPI active?
- Yes — William Breen's NPI (1225001613) is active in the NPPES registry as of the last update on 2012-07-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.