William P Guinan, MD and Associates LLC
NPI 1528506516 · Obstetrics & Gynecology Physician · South Windsor, CT
William P Guinan, MD and Associates LLC is a Obstetrics & Gynecology Physician organization in South Windsor, CT (NPI 1528506516).
Provider details
- NPI number
- 1528506516
- Entity type
- Organization
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- William Guinan, President(860) 644-9578
- License
- 028847 (CT)
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
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
Mailing address
Registry dates
- Enumerated
- 2017-02-09
- Last updated
- 2017-02-09
Frequently asked questions
- What is William P Guinan, MD and Associates LLC's NPI number?
- William P Guinan, MD and Associates LLC's National Provider Identifier (NPI) is 1528506516, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is William P Guinan, MD and Associates LLC?
- William P Guinan, MD and Associates LLC is classified in the NPPES registry as Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is William P Guinan, MD and Associates LLC located?
- William P Guinan, MD and Associates LLC's practice location on file with NPPES is 25 Oakland Road, South Windsor, CT 06074.
- What is William P Guinan, MD and Associates LLC's phone number?
- The practice phone number listed in the NPPES registry for William P Guinan, MD and Associates LLC is (860) 644-9578.
- Who is the authorized official for William P Guinan, MD and Associates LLC?
- The authorized official listed on William P Guinan, MD and Associates LLC's NPPES record is William Guinan, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is William P Guinan, MD and Associates LLC's NPI active?
- Yes — William P Guinan, MD and Associates LLC's NPI (1528506516) is active in the NPPES registry as of the last update on 2017-02-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.