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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. WILLIAM LLOYD VAIL LMFT
NPI 1194751651
Marriage & Family Therapist in Palmdale, CA

Active since June 24, 2006
38678 15TH ST E, PALMDALE, CA 93550(661) 816-7889(661) 277-1233 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. William Lloyd Vail Lmft NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM LLOYD VAIL LMFT (NPI 1194751651) is an individual marriage & family therapist in Palmdale, California, licensed in California (MFC33639) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1194751651
Entity TypeIndividualMale
Primary Taxonomy106H00000X
Provider Legal NameDR. WILLIAM LLOYD VAILCredential: LMFT
Location Address38678 15TH ST EPalmdale, CA 93550-3904
Mailing Address38678 15th St EPalmdale, CA 93550-3904 · (661) 816-7889 · Fax (661) 277-1233
Phone(661) 816-7889
Fax(661) 277-1233
Sole ProprietorNo
Enumeration DateJune 24, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1194751651 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyMarriage & Family TherapistBehavioral Health & Social Service Providers
Taxonomy Code106H00000X
License✔ Licensed in CA · MFC33639
Definition
A marriage and family therapist is a person with a master's degree in marriage and family therapy, or a master's or doctoral degree in a related mental health field with substantially equivalent coursework in marriage and family therapy, who receives supervised clinical experience, or a person who meets the state requirements to practice as a marriage and family therapist. A marriage and family therapist treats mental and emotional disorders within the context of marriage and family systems. A marriage and family therapist provides mental health and counseling services to individuals, couples, families, and groups.
38678 15TH ST E, Palmdale, CA 93550
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Providence Health Plan.Insurance ›

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Vail's NPI number?

The NPI number for William Vail is 1194751651. It was assigned to this individual provider in the NPPES registry on June 24, 2006.

Where is William Vail located?

William Vail practices at 38678 15th St E, Palmdale, CA 93550. The listed phone number is (661) 816-7889.

What is William Vail's specialty?

The primary specialty registered for this NPI is Marriage & Family Therapist with taxonomy code 106H00000X.

What insurance does William Vail accept?

Health plans from Providence Health Plan list William Vail as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for William Vail was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 37 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.