GILLESPIE AND ASSOCIATES
NPI 1558771246
Psychiatry & Neurology - Psychiatry in Glendora, CA
About Gillespie And Associates NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GILLESPIE AND ASSOCIATES (NPI 1558771246) is a healthcare organization registered as a psychiatry in Glendora, California and active in the NPI registry since May 2014. The organization lists Julie Gillespie, Practice Manager, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 3
Other Names 1
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Gillespie And Associates is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
20Medicare enrollment records show 20 clinicians reassign Medicare billing to Gillespie And Associates, which bills Medicare for the services they deliver. Of these, 10 practice at this address and 11 within 10 miles. They are listed nearest first.
Clinicians by Medicare Specialty 4
Clinicians, nearest first (20)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Gillespie And Associates Inc.'s NPI number?
The NPI number for William Gillespie And Associates Inc. is 1558771246. It was assigned to this organization in the NPPES registry on May 2, 2014. The provider is doing business as Gillespie And Associates.
Where is William Gillespie And Associates Inc. located?
William Gillespie And Associates Inc. is located at 510 S Grand Ave Suite 200, Glendora, CA 91741. The listed phone number is (626) 914-1980.
What is William Gillespie And Associates Inc.'s specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is William Gillespie And Associates Inc. enrolled in Medicare?
Yes. William Gillespie And Associates Inc. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through William Gillespie And Associates Inc.?
According to the CMS Revalidation Reassignment List (October 2026 release), 20 clinicians in 4 Medicare specialties reassign their Medicare billing to William Gillespie And Associates Inc.. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Nurse Practitioner (16), Clinical Psychologist (2) and Psychiatry (1). Of these, 10 practice at this address and 11 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for William Gillespie And Associates Inc. was last updated on May 2, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years 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.
# Gillespie And Associates · NPI 1558771246
Psychiatry organization in Glendora, California. Organization record, active in the CMS NPPES registry since May 2, 2014.
## Identity
- **NPI:** 1558771246 (Entity type: Organization)
- **Enumerated:** May 2, 2014
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **Legal business name:** William Gillespie And Associates Inc.
- **Organization subpart:** No
- **Authorized official:** Julie Gillespie, PRACTICE MANAGER
## Practice location
- **Address:** 510 S GRAND AVE, SUITE 200, Glendora, CA 91741-4207
- **Phone:** (626) 914-1980
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 20 clinicians in 4 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (16), Clinical Psychologist (2), Psychiatry (1); 10 practice at this address and 11 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 2, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1558771246) · Data from the CMS NPPES public registry.