Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Robert Stanislaw Niznik, MD

Nephrology Physician in Bellingham, WA · enumerated 2013 · practices at Northwest Vein Center, Pllc.

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

National Provider Identifier

1922447069

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Registry record

Entity type Individual (Type 1)

Name Robert Stanislaw Niznik

Credential MD

Sex Male

Practice address 3104 Squalicum Pkwy Ste 101, Bellingham, WA, 98225

Phone (360) 734-9233

Fax (360) 738-8974

Enumeration date Jun 21, 2013

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 60296 (MN) Secondary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care · License TL.0004905 (CO) Secondary

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License MD60890396 (WA) 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
2063556	Medicaid	WA	-

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

Where does Robert Niznik practice?

The practice location on file with NPPES is in Bellingham, WA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Robert Niznik?

The National Provider Identifier (NPI) for Robert Niznik is 1922447069, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Northwest Vein Center, Pllc Specialist · Bellingham, WA NPI 1780617399

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.