DR. WILLARD QUIRK JR. M.D.
NPI 1821072950
Psychiatry & Neurology - Psychiatry in Lancaster, CA

Q: What is Willard Quirk's NPI number?

The NPI number for Willard Quirk is 1821072950. It was assigned to this individual provider in the NPPES registry on December 1, 2005.

Q: What is Willard Quirk's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Q: Is Willard Quirk enrolled in Medicare?

No. Willard Quirk has opted out of Medicare through January 1, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

Q: When was this NPI record last updated?

The NPPES record for Willard Quirk was last updated on October 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months 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.

Active since December 01, 2005Opted out of Medicare · through Jan 1, 2028

506 W JACKMAN ST, LANCASTER, CA 93534(661) 802-1467 Get Directions Write a Review

NPPES record last updated: October 13, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

On this page

About Dr. Willard Quirk Jr. M.d. NPPES

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

DR. WILLARD QUIRK JR. M.D. (NPI 1821072950) is an individual psychiatry provider in Lancaster, California, licensed in California (A109440) and active in the NPI registry since December 2005. He has opted out of Medicare through January 1, 2028 and remains eligible to order and refer and is a graduate of University Of Texas Medical School At Houston (1994).

NPPES Registry Identity

NPI1821072950

Entity TypeIndividualMale

Primary Taxonomy2084P0800X

Provider Legal NameDR. WILLARD QUIRK JR.Credential: M.D.

Location Address506 W JACKMAN STLancaster, CA 93534-2531

Mailing Address506 W Jackman StLancaster, CA 93534-2531 · (661) 802-1467

Phone(661) 802-1467

Sole ProprietorYes

Medical School CMSUniversity Of Texas Medical School At HoustonGraduated 1994

Enumeration DateDecember 1, 2005

Last NPPES UpdateOctober 13, 2025

NPPES CertifiedOctober 13, 2025

✔ NPI 1821072950 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

Licenses✔ Licensed in CA · A109440✔ Licensed in HI · MD 9499✔ Licensed in FL · ME83506

Definition

A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

506 W JACKMAN ST, Lancaster, CA 93534

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Willard Quirk Jr. M.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from January 1, 2020 through January 1, 2028.

Opt-Out Effective DateJanuary 1, 2020

Opt-Out In Effect ThroughJanuary 1, 2028Opt-out affidavits renew automatically every two years unless cancelled

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93534 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$187.60 typical visit price

range $62.96 – $187.60

Typical copayment $46.90 (range $15.74 – $46.90)

Most-billed visit code 99205

Established Patient

$77.96 typical visit price

range $20.84 – $153.61

Typical copayment $19.49 (range $5.21 – $38.40)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DENISHA TYNES

Community Health Worker