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

Dr. William M. Gillespie, MD

Individual provider Psychiatry Physician · NPI 1538238118

Dr. William M. Gillespie, MD is a Psychiatry in Glendora, California. Graduated from University of California, Geffen School of Medicine in 1993, 33 years ago. Practices with William Gillespie and Associates Inc, a 17-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
33
Trained at
University of California, Geffen School of Medicine
Licensed in
CA
In the registry since
2006
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

510 S Grand Ave Ste 200
Glendora, CA 91741-4291
Phone: (626) 914-1980
Fax: (626) 914-1984
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence G81203 (CA)

Record details

NPI number1538238118
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedNovember 7, 2006
Last updated in NPPESFebruary 28, 2013

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Medical schoolUNIVERSITY OF CALIFORNIA, GEFFEN SCHOOL OF MEDICINE
Graduated 1993 (33 years in practice)
Group practice William Gillespie And Associates Inc — 17 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Glendora