Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Lytollis, PHD, MD

Nephrology Physician in Lincoln, IL · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1386602407

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Registry record

Entity type Individual (Type 1)

Name Dr. William Lytollis

Credential PHD, MD

Sex Male

Practice address 200 Stahlhut Dr, Lincoln, IL, 62656

Phone (217) 528-7541

Enumeration date May 1, 2006

Last updated in NPPES Dec 11, 2020

Taxonomy & licenses

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License 057392 (GA) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Other identifiers

Identifier	Type	State	Issuer
057392	Other	GA	MEDICAL LICENSE
036144534	Other	IL	MEDICAL LICENSE

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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is William Lytollis?

William Lytollis is registered in NPPES with the primary taxonomy of Nephrology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-12-11.