Guillermo Acero, MD
NPI 1629144373 · Anatomic Pathology & Clinical Pathology Physician · Ojai, CA
Guillermo Acero, MD is a Anatomic Pathology & Clinical Pathology Physician provider in Ojai, CA (NPI 1629144373).
Provider details
- NPI number
- 1629144373
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A26498 (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
19 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
- 2006-11-27
- Last updated
- 2023-03-07
Frequently asked questions
- What is Guillermo Acero's NPI number?
- Guillermo Acero's National Provider Identifier (NPI) is 1629144373, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Guillermo Acero's specialty?
- Guillermo Acero is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Guillermo Acero located?
- Guillermo Acero's practice location on file with NPPES is 1306 Maricopa Highway, Ojai, CA 93023.
- What is Guillermo Acero's phone number?
- The practice phone number listed in the NPPES registry for Guillermo Acero is (805) 646-1401.
- Is Guillermo Acero's NPI active?
- Yes — Guillermo Acero's NPI (1629144373) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.