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

Olga Meltser, RN, APN

Q: What is the NPI number for Olga Meltser?

The National Provider Identifier (NPI) for Olga Meltser is 1780458174, a Type 1 (individual) record in the CMS NPPES registry.

Nurse Practitioner in Riverwoods, IL · enumerated 2023.

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

National Provider Identifier

1780458174

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Registry record

Entity type Individual (Type 1)

Name Olga Meltser

Credential RN, APN

Sex Female

Practice address Riverwoods, IL, 60015

Phone (224) 625-0046

Fax (847) 444-9100

Enumeration date Nov 7, 2023

Last updated in NPPES Nov 7, 2023

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

Taxonomy & licenses

163WG0000X General Practice Registered Nurse Nursing Service Providers · License 041.501503 (IL) Secondary

163WG0000X General Practice Registered Nurse Nursing Service Providers · License 255194-30 (WI) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209.028671 (IL) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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

What is the NPI number for Olga Meltser?

The National Provider Identifier (NPI) for Olga Meltser is 1780458174, a Type 1 (individual) record in the CMS NPPES registry.

Where does Olga Meltser practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-07.