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GARY CHAN
NPI 1346694536
Anesthesiology in Los Angeles, CA

Active since April 14, 2016PECOS EnrolledAccepts Medicare Assignment
757 WESTWOOD PLZ STE 3304, LOS ANGELES, CA 90095(310) 267-8653(310) 267-3766 Get Directions Write a Review

NPPES record last updated: September 1, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 1, 2020, Jul 24, 2020 (2 updates tracked since 2020).

About Gary Chan NPPES

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

GARY CHAN (NPI 1346694536) is an individual anesthesiology provider in Los Angeles, California, licensed in California (A166343) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS and is a graduate of Ohio State University College Of Medicine (2016).

NPPES Registry Identity

NPI1346694536
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameGARY CHAN
Location Address757 WESTWOOD PLZ STE 3304Los Angeles, CA 90095-8358
Mailing Address757 Westwood Plz Ste 3304Los Angeles, CA 90095-8358 · (310) 267-8653 · Fax (310) 267-3766
Phone(310) 267-8653
Fax(310) 267-3766
Sole ProprietorNo
Medical School CMSOhio State University College Of MedicineGraduated 2016
Enumeration DateApril 14, 2016
Last NPPES UpdateSeptember 1, 20202 updates tracked since enumeration
NPPES CertifiedSeptember 1, 2020
✔ NPI 1346694536 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in CA · A166343
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
757 WESTWOOD PLZ STE 3304, Los Angeles, CA 90095
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Gary Chan is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3476899352
PECOS Enrollment IDI20200508000625
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 Gary Chan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Conejo Los Robles Anesthesiology Medical Group, Inc.
27 mi
Anesthesiology
215 W JANSS RD
Thousand Oaks, CA 91360
  • Reassigned Medicare billing, California enrollment
  • 53 clinicians in this Medicare group
NPI 1821171729 (805) 370-4521

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

Areas of Expertise CMS Part B claims 10

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731
This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.
36 services36 patients
Anesthesia for procedure on small and large bowel using an endoscope 00813
Anesthesia for an endoscopic procedure on the small and large bowel ensures comfort and relaxation during the procedure. It involves administering medicine to help you sleep or feel drowsy. This allows the doctor to examine your bowels without causing you discomfort or pain.
34 services34 patients
Anesthesia for other procedure on large bowel using an endoscope 00811
Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.
33 services33 patients
Anesthesia for exam of colon using an endoscope 00812
Anesthesia for a colon examination with an endoscope is a method used to ensure comfort during the procedure. It involves administering medication to help you relax or sleep, thus reducing discomfort as the endoscope, a thin, flexible tube, is navigated through your colon.
18 services18 patients
Anesthesia for total hip replacement 01214
Anesthesia for total hip replacement is a medical service where medication is given to eliminate pain during surgery. Two types are commonly used: general anesthesia, making you unconscious, or spinal anesthesia, numbing the lower body. The choice depends on your health and your doctor's recommendation.
15 services15 patients
Anesthesia for other closed procedure on chest 00520
Anesthesia for a closed chest procedure involves the use of medications to block sensation, ensuring you don't feel pain during the procedure. It can be general (you're asleep) or regional (part of your body is numbed). This helps maintain comfort and safety.
12 services12 patients

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. TYKEN C. HSIEH M.D.
Anesthesiology
757 WESTWOOD PLZ STE 3304
LOS ANGELES, CA 90095
Los Angeles County (310) 267-8680
MICHELLE-THAO LIEU
Student in an Organized Health Care Education/Training Program
757 WESTWOOD PLZ STE 3304
LOS ANGELES, CA 90095
Los Angeles County (310) 267-8654
DR. GREGORY SHEEHAN M.D.
Anesthesiology
757 WESTWOOD PLZ STE 3304
LOS ANGELES, CA 90095
Los Angeles County (310) 267-8653
SARA ARASTOO MD
Student in an Organized Health Care Education/Training Program
757 WESTWOOD PLZ STE 3304
LOS ANGELES, CA 90095
Los Angeles County (310) 267-8655
DR. ANDREW GHOBRIAL MD
Anesthesiology
757 WESTWOOD PLZ STE 3304
LOS ANGELES, CA 90095
Los Angeles County (310) 267-8655
MATTHEW LEON
Student in an Organized Health Care Education/Training Program
757 WESTWOOD PLZ STE 3304
LOS ANGELES, CA 90095
Los Angeles County (301) 267-0903
KENJI OGURA M.D.
Student in an Organized Health Care Education/Training Program
757 WESTWOOD PLZ STE 3304
LOS ANGELES, CA 90095
Los Angeles County (310) 267-8655
ERIC NGUYEN
Student in an Organized Health Care Education/Training Program
757 WESTWOOD PLZ STE 3304
LOS ANGELES, CA 90095
Los Angeles County (310) 267-0903

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 Gary Chan's NPI number?

The NPI number for Gary Chan is 1346694536. It was assigned to this individual provider in the NPPES registry on April 14, 2016.

Where is Gary Chan located?

Gary Chan practices at 757 Westwood Plz Ste 3304, Los Angeles, CA 90095. The listed phone number is (310) 267-8653.

What is Gary Chan's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Gary Chan enrolled in Medicare?

Yes. Gary Chan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Gary Chan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gary Chan reassigns Medicare benefits to Conejo Los Robles Anesthesiology Medical Group, Inc. (Thousand Oaks, 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 Gary Chan'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 Gary Chan was last updated on September 1, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.