NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. William M Lytkowski, D.O.

Anesthesiology Physician in Ardmore, OK · enumerated 2006 · practices at William Lytkowski,D.O., P.C..

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

National Provider Identifier

1275504649

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. William M Lytkowski
Credential D.O.
Sex Male
Practice address Ardmore, OK, 73401
Phone (580) 504-3999
Enumeration date Feb 1, 2006
Last updated in NPPES Oct 9, 2019

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 4530 (OK) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1275504649 active?
Yes, as of the latest NPPES snapshot, NPI 1275504649 is active (record last updated 2019-10-09).
How do I verify William Lytkowski's NPI record?
Cross-check NPI 1275504649 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-10-09.