Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ashley Mason, PMHNP-BC

Psychiatric/Mental Health Nurse Practitioner in Clarkston, MI · enumerated 2020.

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

National Provider Identifier

1821694589

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Registry record

Entity type Individual (Type 1)

Name Ashley Mason

Credential PMHNP-BC

Sex Female

Practice address 5715 Bella Rosa Blvd Ste 200, Clarkston, MI, 48348

Phone (734) 600-7873

Enumeration date Dec 8, 2020

Last updated in NPPES Nov 1, 2023

Taxonomy & licenses

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 4704293891NSA230WS (MI) Primary

163W00000X Registered Nurse Nursing Service Providers · License 4704293891 (MI) Secondary

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 1821694589 active?

Yes, as of the latest NPPES snapshot, NPI 1821694589 is active (record last updated 2023-11-01).

How do I verify Ashley Mason's NPI record?

Cross-check NPI 1821694589 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

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Bruce Hamby Physician Assistant · Clarkston, MI NPI 1295318376 Alan Burnham Psychiatric/Mental Health Nurse Practitioner · Clarkston, MI NPI 1043161185

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-01.