NPPES file of Aug 9, 2026

Guillermo David Alfonso, DO

Pediatric Radiology Physician · Cincinnati, OH

Guillermo David Alfonso, DO is a pediatric radiology physician with a practice address in Cincinnati, Ohio, and NPI 1124588561, issued on Mar 21, 2019. Check the license (Ohio 34.017009, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1124588561
Name
Guillermo David Alfonso
Credential
DO
Primary taxonomy
Pediatric Radiology Physician 2085P0229X
License numbers
34.017009 OH
TP522 KY
Self-reported in NPPES; status is on the state search
Practice location
3333 Burnet Ave, Cincinnati, OH 45229
Phone
(513) 636-4200
Enumerated
Mar 21, 2019
Record last updated
Aug 26, 2025
Medicare enrollment
Enrolled (PECOS I20250829000173); accepts Medicare assignment
Medical or professional school
Edward Via Col Of Osteo Medicine-Carolinas Campus, 2019
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest pediatric radiology physician records → All 120 in Ohio → Look up another NPI →

Also registered at 3333 Burnet Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Mohamed Abdelaziz, MD, MSC, PHDPediatric Orthopaedic Surgery Physician1306521927
  2. Subhy Abo Rubeea, MDStudent in an Organized Health Care Education/Training Program1184077398
  3. Juan Abonia, M.D.Allergy & Immunology Physician1457300915
  4. Hideat AbrahaNurse Practitioner1801613237
  5. Martha Abramovich, APRN-CNPNurse Practitioner1558021022
  6. Maisam Abu-El-Haija, M.D.Pediatric Gastroenterology Physician1467660423

Verify Guillermo David Alfonso in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersState Medical Board of Ohio
    Search for license 34.017009    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Ohio license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Children's Hospital Medical CenterCincinnati, OH

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Guillermo David Alfonso among 120 pediatric radiology physician records in Ohio

Guillermo David Alfonso, DO is one of 120 pediatric radiology physician records with a practice address in Ohio. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 91% of them.

  • NPI issued2019 · 91% of these records are older, 8% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 76% of these records are
  • Graduated2019 · median 2003 among the 91 with a school on file
  • Record last updated2025 · 39% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085P0229X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pediatric Radiology Physician providers in Ohio

There are 120 pediatric radiology physician records in Ohio.

All 120 in Ohio → Every provider in Cincinnati → Pediatric Radiology Physician nationwide →

The 8 pediatric radiology physician records with the nearest ZIP codes

  1. Christopher Anton, MDCincinnati, OH 452291245324698
  2. Eric Crotty, MDCincinnati, OH 452291437253531
  3. Kathleen Emery, M.D.Cincinnati, OH 452291851307268
  4. Robert Fleck, M.D.Cincinnati, OH 452291720094147
  5. Marilyn Goske Rudick, M.D.Cincinnato, OH 452291891728879
  6. Robert Guillerman, M.D.Cincinnati, OH 452291467442822
  7. Victoria Gylys-Morin, M.D.Cincinnati, OH 452291881608206
  8. Kathy Helton-Skally, M.D.Cincinnati, OH 452291861405003

Common questions

What is Guillermo David Alfonso, DO's NPI number?

Guillermo David Alfonso, DO's National Provider Identifier (NPI) is 1124588561, issued on Mar 21, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Guillermo David Alfonso, DO located?

The NPPES record lists a practice address at 3333 Burnet Ave, Cincinnati, OH, 45229. Phone: (513) 636-4200. Providers update this record themselves, so call before visiting.

How can I verify Guillermo David Alfonso, DO's license?

NPPES lists Ohio license number 34.017009, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.