UCSD Patient Accounts Receivable W-9s

Last Updated: December 19, 2025 2:13:51 PM PST

See a list of UCSD departmental ID numbers for patient billing.

For almost all purposes, use the UCSD Campus ID Number:95-6006144 (PDF). However, for certain Patient Accounts Receivable, you will need to select from the list of UCSD departmental ID numbers below.

Note: Each ID number links to a PDF file.

UCSD department (Use ID numbers for patient billing only.)	ID number
UCSD Department of Radiology	20-5892682
UCSD Medical Group	23-7064656
UCSD Radiation Oncology	26-0622624
UCSD Cancer Center	27-4440873
UCSD Radiology Neuro Interventional Services	30-0561639
UCSD Physician Associates	30-0634090
Eating Disorder and Research Center	32-0230033
UCSD Orthopedics/ Clinic & Surgery	33-0541970
UCSD Pediatric Associates	33-0541971
UCSD Surgery/ Trauma/ Burn	33-0558502
UCSD Vascular Lab	33-0569271
UCSD Head and Neck Surgery	33-0571597
UCSD Med-Cytogenetics	33-0578054
UCSD Medical Center	33-0599494
UCSD Opthalmology/ Shiley Optical	33-0623242
UCSD PED/ Cystine Determination Lab	33-0646799
UCSD Core Cell Culture Facility	33-0646800
California Tay-Sachs Program	33-0685903
UCSD Emergency Physicians	33-0702174
Hartson Medical Service — Laidlaw	33-0724270
UCSD Senior Health Plan (Managed Care)	33-0768059
UCSD Dialysis Center	33-0768277
UCSD Biochemical Genetics	33-0833316
UCSD Neuroscience Labs	33-0838878
UCSD Neurosurgery	33-0915278
UCSD Student Health Service	35-2406380
UCSD Radiation Oncology South Bay	80-0519972

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