DR. BRIAN MATTHEW GILLISS M.D. M.S.
NPI 1477833291
Anesthesiology in San Francisco, CA

Q: What is Brian Gilliss's NPI number?

The NPI number for Brian Gilliss is 1477833291. It was assigned to this individual provider in the NPPES registry on August 24, 2011.

Q: What is Brian Gilliss's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Brian Gilliss was last updated on December 21, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since August 24, 2011PECOS Enrolled

4150 CLEMENT ST, SAN FRANCISCO, CA 94121(415) 221-4810 Get Directions Write a Review

NPPES record last updated: December 21, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Dec 21, 2021, Jan 20, 2016 (2 updates tracked since 2016).

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About Dr. Brian Matthew Gilliss M.d. M.s. NPPES

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

DR. BRIAN MATTHEW GILLISS M.D. M.S. (NPI 1477833291) is an individual anesthesiology provider in San Francisco, California, licensed in California (119145) and active in the NPI registry since August 2011. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1477833291

Entity TypeIndividualMale

Primary Taxonomy207L00000X

Provider Legal NameDR. BRIAN MATTHEW GILLISSCredential: M.D. M.S.

Location Address4150 CLEMENT STSan Francisco, CA 94121-1563

Mailing Address1663 19th AveSan Francisco, CA 94122-4517 · (415) 516-9240

Phone(415) 221-4810

Sole ProprietorNo

Enumeration DateAugust 24, 2011

Last NPPES UpdateDecember 21, 20212 updates tracked since enumeration

✔ NPI 1477833291 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207L00000X

License✔ Licensed in CA · 119145

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.

4150 CLEMENT ST, San Francisco, CA 94121

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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 (PECOS)

Dr. Brian Matthew Gilliss M.d. M.s. 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 Brian Gilliss reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc

3.5 mi

Internal Medicine

2238 GEARY
San Francisco, CA 94116

Reassigned Medicare billing, California enrollment
20,078 clinicians in this Medicare group

NPI 1841373800 (415) 833-2200

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

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.

MR. SHANNON KISSINGER MSW

Social Worker