WILLIAM L HORVATH (MD) – Hematology & Oncology Physician, NPI 1023015351

WILLIAM L HORVATH (MD) is a healthcare provider. based in Sylvania, Ohio. specializing in Hematology & Oncology Physician. They hold the professional credentials MD. They hold a License No. 35038120 (OH). The NPI Number for WILLIAM L HORVATH (MD) is 1023015351

Main info

Male
Name
WILLIAM L HORVATH (MD)
NPI
1023015351
Phone
(419) 824-6599
Address
5308 HARROUN RD
Enumeration Date
1 July 2005
Last Update Date
1 May 2012
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience63
Completeness75
Years active:20State licenses:2Digital endpointsOther names

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Provider Addresses for WILLIAM L HORVATH (MD)

  • 5308, Harroun Road, Sylvania, Lucas County, Ohio, 43560, United States

    SUITE 055

    SYLVANIA, OH 435602114

    Phone: (419) 824-6599

    Fax: (419) 885-3870

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

No Medicare enrollment or revalidation data available for this provider in our database.

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Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 43560)

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Frequently asked questions

What is WILLIAM L HORVATH (MD)'s NPI number?
WILLIAM L HORVATH (MD)'s NPI is 1023015351 — the number used across U.S. healthcare to identify this provider.
Active or inactive — what applies to WILLIAM L HORVATH (MD)?
You should see WILLIAM L HORVATH (MD) as active in CMS-hosted NPPES data.
What expertise is attributed to WILLIAM L HORVATH (MD)?
WILLIAM L HORVATH (MD)'s specialty line reads Hematology & Oncology Physician. Clinical services aligned with this taxonomy classification.
Is WILLIAM L HORVATH (MD) associated with Sylvania?
Public fields place WILLIAM L HORVATH (MD) around Sylvania, Ohio. Always confirm the exact site before visiting.
Does WILLIAM L HORVATH (MD) accept insurance?
Insurance participation is not part of the core NPI extract — call the plan or office to confirm.