OrganizationActive
William P Guinan and Associates LLC
NPI 1184164477 · Specialist · South Windsor, CT
William P Guinan and Associates LLC is a Specialist organization in South Windsor, CT (NPI 1184164477).
Provider details
- NPI number
- 1184164477
- Entity type
- Organization
- Primary specialty
- SpecialistOther Service Providers
- Organization subpart
- No
- Authorized official
- William Guinan, MD(860) 331-7555
- License
- 028847 (CT)
Specialties & taxonomies
Other Service Providers
Profile Score
Established profile(70/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 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
25 Oakland Rd Ste 1
South Windsor, CT 06074-2897
Phone: (860) 644-5628
Street-level locationGet directions
Mailing address
436 Middle Tpke E
Manchester, CT 06040-3736
Registry dates
- Enumerated
- 2017-03-06
- Last updated
- 2017-03-24
Frequently asked questions
- What is William P Guinan and Associates LLC's NPI number?
- William P Guinan and Associates LLC's National Provider Identifier (NPI) is 1184164477, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is William P Guinan and Associates LLC?
- William P Guinan and Associates LLC is classified in the NPPES registry as Specialist (Other Service Providers).
- Where is William P Guinan and Associates LLC located?
- William P Guinan and Associates LLC's practice location on file with NPPES is 25 Oakland Rd Ste 1, South Windsor, CT 06074-2897.
- What is William P Guinan and Associates LLC's phone number?
- The practice phone number listed in the NPPES registry for William P Guinan and Associates LLC is (860) 644-5628.
- Who is the authorized official for William P Guinan and Associates LLC?
- The authorized official listed on William P Guinan and Associates LLC's NPPES record is William Guinan, MD. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is William P Guinan and Associates LLC's NPI active?
- Yes — William P Guinan and Associates LLC's NPI (1184164477) is active in the NPPES registry as of the last update on 2017-03-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.