Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. William O Light, MD
Dermatology Physician in Lima, OH · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1730101742
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Registry record
Entity type Individual (Type 1)
Name Dr. William O Light
Credential MD
Sex Male
Practice address 1005 Bellefontaine Ave, Ste 225, Lima, OH, 45804
Phone (419) 228-8191
Fax (419) 229-3490
Enumeration date Jul 25, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 35034390L (OH) Primary
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0194463 | Medicaid | OH | — |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty.
Frequently asked questions
How do I verify William Light's NPI record?
Cross-check NPI 1730101742 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1730101742 active?
Yes — as of the latest NPPES snapshot, NPI 1730101742 is active (record last updated 2007-07-08).
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.