Guillermo Alfonso, DO
NPI 1124588561 · Pediatric Radiology Physician · Cincinnati, OH
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Guillermo Alfonso, DO is a Pediatric Radiology Physician provider in Cincinnati, OH (NPI 1124588561).
Provider details
- NPI number
- 1124588561
- Entity type
- Individual
- Primary specialty
- Pediatric Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- TP522 (KY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 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)
- 800 Rose StLexington, KY 40536-3026Phone: (859) 323-2222Fax: (859) 323-5090
Registry dates
- Enumerated
- 2019-03-21
- Last updated
- 2025-08-26
- Certified
- 2025-08-26
Frequently asked questions
- What is Guillermo Alfonso's NPI number?
- Guillermo Alfonso's National Provider Identifier (NPI) is 1124588561, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Guillermo Alfonso's specialty?
- Guillermo Alfonso is listed in the NPPES registry with a primary specialty of Pediatric Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Guillermo Alfonso located?
- Guillermo Alfonso's practice location on file with NPPES is 3333 Burnet Ave, Cincinnati, OH 45229-3026.
- What is Guillermo Alfonso's phone number?
- The practice phone number listed in the NPPES registry for Guillermo Alfonso is (513) 636-4200.
- Does Guillermo Alfonso accept Medicare?
- Guillermo Alfonso is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Guillermo Alfonso's NPI active?
- Yes — Guillermo Alfonso's NPI (1124588561) is active in the NPPES registry as of the last update on 2025-08-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.