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DR. SIDNEY ZISOOK M.D.
NPI 1477586790
Psychiatry & Neurology - Psychiatry in La Jolla, CA

Active since July 09, 2006PECOS Enrolled
9500 GILMAN DR, MAIL CODE 9116-A, LA JOLLA, CA 92093(858) 534-4040(858) 822-0231 Get Directions Write a Review

NPPES record last updated: May 8, 2017. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Sidney Zisook M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. SIDNEY ZISOOK M.D. (NPI 1477586790) is an individual psychiatry provider in La Jolla, California, licensed in California (G28361) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1477586790
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. SIDNEY ZISOOKCredential: M.D.
Location Address9500 GILMAN DR, MAIL CODE 9116-ALa Jolla, CA 92093-5004
Mailing AddressPo Box 232410San Diego, CA 92193-2410 · (858) 249-6748 · Fax (619) 543-3183
Phone(858) 534-4040
Fax(858) 822-0231
Sole ProprietorNo
Enumeration DateJuly 9, 2006
Last NPPES UpdateMay 8, 2017
✔ NPI 1477586790 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in CA · G28361
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
9500 GILMAN DR, La Jolla, CA 92093
Open in Google Maps ↗

Other Identifiers 3

Medicaid00G283610CA
Medicare UPINA43704CA
Medicare ID-Type UnspecifiedWG28361ACA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Sidney Zisook M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Sidney Zisook reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Regents Of The University Of California
9.4 mi
Obstetrics & Gynecology
200 W ARBOR DR
San Diego, CA 92103
  • Reassigned Medicare billing, California enrollment
  • Also billed through NPI 1508968967 (California)
  • 171 clinicians in this Medicare group
NPI 1174626618 (800) 926-8273

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92093 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$184.71 typical visit price
range $62.10 – $184.71
Typical copayment $46.17 (range $15.52 – $46.17)
Most-billed visit code 99205
Established Patient
$76.87 typical visit price
range $20.62 – $151.42
Typical copayment $19.21 (range $5.15 – $37.85)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. LEE LE WANG M.D.
Radiology (Diagnostic Radiology)
9500 GILMAN DR
LA JOLLA, CA 92093
San Diego County (858) 534-3880
BONNIE SUSAN OMEARA NP
Nurse Practitioner (Adult Health)
9500 GILMAN DR
LA JOLLA, CA 92093
San Diego County (858) 534-3300
ELKA RUBIN MD
Radiology (Diagnostic Radiology)
9500 GILMAN DR
LA JOLLA, CA 92093
San Diego County (858) 534-2230
DR. ROBERT J PARMER M.D.
Internal Medicine
9500 GILMAN DR, MAIL CODE 9111-H
LA JOLLA, CA 92093
San Diego County (858) 552-8585
ANGELA R ACFALLE NP CNS
Nurse Practitioner (Adult Health)
9500 GILMAN DR, # 0039
LA JOLLA, CA 92093
San Diego County (858) 534-2918
BRITNIE PRIEST MAT, ATC, LAT
Specialist/Technologist (Athletic Trainer)
9500 GILMAN DR, MC0529
LA JOLLA, CA 92093
San Diego County (858) 822-6747
CHRISTOPHER MONGLIN LIU
Orthopaedic Surgery
9500 GILMAN DR
LA JOLLA, CA 92093
San Diego County (571) 721-9812
GLORIA LIN
Student in an Organized Health Care Education/Training Program
9500 GILMAN DR
LA JOLLA, CA 92093
San Diego County (858) 657-8803

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 Sidney Zisook's NPI number?

The NPI number for Sidney Zisook is 1477586790. It was assigned to this individual provider in the NPPES registry on July 9, 2006.

Where is Sidney Zisook located?

Sidney Zisook practices at 9500 Gilman Dr Mail Code 9116-A, La Jolla, CA 92093. The listed phone number is (858) 534-4040.

What is Sidney Zisook's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Sidney Zisook enrolled in Medicare?

Yes. Sidney Zisook is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Sidney Zisook's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sidney Zisook reassigns Medicare benefits to Regents Of The University Of California (San Diego, CA). The 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 Sidney Zisook's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Sidney Zisook was last updated on May 8, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.