Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Krzysztof J Lyson, MD

Nephrology Physician in Austin, TX · enumerated 2006.

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

National Provider Identifier

1376586073

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Registry record

Entity type Individual (Type 1)

Name Dr. Krzysztof J Lyson

Credential MD

Sex Male

Practice address 4100 Duval Rd, Bldg 4, Ste 102, Austin, TX, 78759

Phone (512) 832-0999

Fax (512) 832-6094

Enumeration date Jun 13, 2006

Last updated in NPPES Sep 2, 2016

Taxonomy & licenses

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License K8311 (TX) 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
38224407	Medicaid	TX	-

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 1376586073 active?

Yes, as of the latest NPPES snapshot, NPI 1376586073 is active (record last updated 2016-09-02).

How do I verify Krzysztof Lyson's NPI record?

Cross-check NPI 1376586073 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-09-02.