William Mcguinness, M.D.
NPI 1881893667 · Internal Medicine Physician · Corcoran, CA
William Mcguinness, M.D. is a Internal Medicine Physician provider in Corcoran, CA (NPI 1881893667).
Provider details
- NPI number
- 1881893667
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- C50798 (CA)
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
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
Mailing address
Registry dates
- Enumerated
- 2007-07-12
- Last updated
- 2007-07-12
Frequently asked questions
- What is William Mcguinness's NPI number?
- William Mcguinness's National Provider Identifier (NPI) is 1881893667, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Mcguinness's specialty?
- William Mcguinness is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Mcguinness located?
- William Mcguinness's practice location on file with NPPES is 4001 W. King Ave, Corcoran, CA 93212.
- What is William Mcguinness's phone number?
- The practice phone number listed in the NPPES registry for William Mcguinness is (559) 992-8800.
- Is William Mcguinness's NPI active?
- Yes — William Mcguinness's NPI (1881893667) is active in the NPPES registry as of the last update on 2007-07-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.