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

Mia Michelle Harkness, AMFT

Q: What is the NPI number for Mia Harkness?

The National Provider Identifier (NPI) for Mia Harkness is 1518897099, a Type 1 (individual) record in the CMS NPPES registry.

Mental Health Counselor in Walnut Creek, CA · enumerated 2026.

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

National Provider Identifier

1518897099

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mia Michelle Harkness

Credential AMFT

Sex Female

Practice address Walnut Creek, CA, 94596

Phone (877) 676-7634

Fax (877) 676-7634

Enumeration date May 19, 2026

Last updated in NPPES May 19, 2026

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

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License AMFT147551 (CA) Primary

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

Where does Mia Harkness practice?

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

What is the NPI number for Mia Harkness?

The National Provider Identifier (NPI) for Mia Harkness is 1518897099, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Tawnee Saesaue Clinical Social Worker · Walnut Creek, CA NPI 1518123066 Paul J Kramer Marriage & Family Therapist A Professional Corporation Marriage & Family Therapist · Walnut Creek, CA NPI 1316377963 Remarkable Marriage and Family Institute Marriage & Family Therapist · Walnut Creek, CA NPI 1538665567 Jessica Azer Marriage & Family Therapist · Walnut Creek, CA NPI 1982263497 Monica Morcos Mental Health Counselor · Walnut Creek, CA NPI 1851964472 Kelsey Oneil Clinical Social Worker · Walnut Creek, CA NPI 1508582677 Arthur Wagner Marriage & Family Therapist · Walnut Creek, CA NPI 1871421305

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-19.