Guillermo Trejo, M.A. MFT
NPI 1316802218 · Mental Health Counselor · San Antonio, TX
Guillermo Trejo, M.A. MFT is a Mental Health Counselor provider in San Antonio, TX (NPI 1316802218).
Provider details
- NPI number
- 1316802218
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- M.A. MFT
- Sex
- Male
- Sole proprietor
- Yes
- License
- 98386 (TX)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in 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
- 2025-12-22
- Last updated
- 2025-12-22
- Certified
- 2025-12-22
Frequently asked questions
- What is Guillermo Trejo's NPI number?
- Guillermo Trejo's National Provider Identifier (NPI) is 1316802218, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Guillermo Trejo's specialty?
- Guillermo Trejo is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Guillermo Trejo located?
- Guillermo Trejo's practice location on file with NPPES is 6738 Manassas Dr, San Antonio, TX 78240-2843.
- What is Guillermo Trejo's phone number?
- The practice phone number listed in the NPPES registry for Guillermo Trejo is (210) 642-9483.
- Is Guillermo Trejo's NPI active?
- Yes — Guillermo Trejo's NPI (1316802218) is active in the NPPES registry as of the last update on 2025-12-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.