Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Willard Quirk Jr., MD

Individual provider Psychiatry Physician · NPI 1821072950

Dr. Willard Quirk Jr., MD is a Psychiatry in Lancaster, California. Graduated from University of Texas Medical School at Houston in 1994, 32 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in California, Florida and Hawaii.

Years since qualifying
32
Trained at
University of Texas Medical School at Houston
Licensed in
CA, FL, HI
In the registry since
2005
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

506 W Jackman St
Lancaster, CA 93534-2531
Phone: (661) 802-1467
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence A109440 (CA)
Psychiatry Physician Taxonomy 2084P0800X · Licence MD 9499 (HI)
Psychiatry Physician Taxonomy 2084P0800X · Licence ME83506 (FL)

Record details

NPI number1821072950
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedDecember 1, 2005
Last updated in NPPESOctober 13, 2025
Certification dateOctober 13, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPSYCHIATRY
Medical schoolUNIVERSITY OF TEXAS MEDICAL SCHOOL AT HOUSTON
Graduated 1994 (32 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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