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

Individual provider Emergency Medicine Physician · NPI 1922058288

Patricia Jean Gillis, MD practises Emergency Medicine in Northridge, California. Graduated from Loma Linda University School of Medicine in 1999, 27 years ago. Practices with Exer Medical Corporation, a 333-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
27
Trained at
Loma Linda University 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

18300 Roscoe Blvd
Northridge, CA 91328 Not confirmed with CMS for 12 years — call before visiting
Phone: (818) 885-8500
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence A73899 (CA)

Record details

NPI number1922058288
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 10, 2006
Last updated in NPPESDecember 12, 2013

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolLOMA LINDA UNIVERSITY SCHOOL OF MEDICINE
Graduated 1999 (27 years in practice)
Group practice Exer Medical Corporation — 333 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients604
Services billed 1,477 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Exer Medical Corporation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 333 clinicians in the practice; 12 are shown here.

Other providers in Northridge