Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mary Ann Gusakov-Mason, PHARM.D.

Geriatric Pharmacist in North Las Vegas, NV · enumerated 2006.

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

National Provider Identifier

1629026943

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Registry record

Entity type Individual (Type 1)

Name Dr. Mary Ann Gusakov-Mason

Credential PHARM.D.

Sex Female

Practice address 6900 North Pecos Road, Pharmacy Department #119, North Las Vegas, NV, 89086

Phone (702) 791-9000

Fax (702) 224-6900

Enumeration date May 5, 2006

Last updated in NPPES Jan 8, 2013

Taxonomy & licenses

1835G0303X Geriatric Pharmacist Pharmacy Service Providers · License 06559 (NV) Primary

1835P0018X Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist Pharmacy Service Providers · License 06559 (NV) Secondary

PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD 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 1629026943 active?

Yes, as of the latest NPPES snapshot, NPI 1629026943 is active (record last updated 2013-01-08).

How do I verify Mary Ann Gusakov-Mason's NPI record?

Cross-check NPI 1629026943 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 2013-01-08.