Guillermo Aldave Orzaiz, MD, PHD
NPI 1255783411 · Neurological Surgery Physician · Houston, TX
Enrolled with Medicare as Practitioner - Neurosurgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Guillermo Aldave Orzaiz, MD, PHD is a Neurological Surgery Physician provider in Houston, TX (NPI 1255783411).
Provider details
- NPI number
- 1255783411
- Entity type
- Individual
- Primary specialty
- Neurological Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- T1276 (TX)
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
2 documented practice locations
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
Additional practice locations (1)
- 1515 Holcombe BlvdHouston, TX 77030-4000Phone: (713) 792-6161
Registry dates
- Enumerated
- 2016-07-12
- Last updated
- 2026-03-04
- Certified
- 2026-03-04
Frequently asked questions
- What is Guillermo Aldave Orzaiz's NPI number?
- Guillermo Aldave Orzaiz's National Provider Identifier (NPI) is 1255783411, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Guillermo Aldave Orzaiz's specialty?
- Guillermo Aldave Orzaiz is listed in the NPPES registry with a primary specialty of Neurological Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Guillermo Aldave Orzaiz located?
- Guillermo Aldave Orzaiz's practice location on file with NPPES is 6701 Fannin St, Houston, TX 77030-2608.
- What is Guillermo Aldave Orzaiz's phone number?
- The practice phone number listed in the NPPES registry for Guillermo Aldave Orzaiz is (832) 822-1282.
- Does Guillermo Aldave Orzaiz accept Medicare?
- Guillermo Aldave Orzaiz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Guillermo Aldave Orzaiz's NPI active?
- Yes — Guillermo Aldave Orzaiz's NPI (1255783411) is active in the NPPES registry as of the last update on 2026-03-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.