Guillermo Castillo MD Inc
NPI 1740413897 · Family Medicine Physician · San Diego, CA
Guillermo Castillo MD Inc is a Family Medicine Physician organization in San Diego, CA (NPI 1740413897).
Provider details
- NPI number
- 1740413897
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Guillermo Castillo, President/Owner(619) 823-1947
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
16 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
- 2009-08-24
- Last updated
- 2013-01-02
Frequently asked questions
- What is Guillermo Castillo MD Inc's NPI number?
- Guillermo Castillo MD Inc's National Provider Identifier (NPI) is 1740413897, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Guillermo Castillo MD Inc?
- Guillermo Castillo MD Inc is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Guillermo Castillo MD Inc located?
- Guillermo Castillo MD Inc's practice location on file with NPPES is 5550 University Ave, San Diego, CA 92105-2307.
- What is Guillermo Castillo MD Inc's phone number?
- The practice phone number listed in the NPPES registry for Guillermo Castillo MD Inc is (619) 823-1947.
- Who is the authorized official for Guillermo Castillo MD Inc?
- The authorized official listed on Guillermo Castillo MD Inc's NPPES record is Guillermo Castillo, President/Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Guillermo Castillo MD Inc's NPI active?
- Yes — Guillermo Castillo MD Inc's NPI (1740413897) is active in the NPPES registry as of the last update on 2013-01-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.