ANNETTE LUO M.D.
NPI 1629658455
Anesthesiology in San Francisco, CA

Active since April 14, 2021PECOS Enrolled
1975 4TH ST, SAN FRANCISCO, CA 94143(415) 476-1000 Get Directions Write a Review

NPPES record last updated: August 12, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 12, 2026, Feb 21, 2025, Aug 2, 2022 and 3 more (6 updates tracked since 2021).

About Annette Luo M.d. NPPES

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

ANNETTE LUO M.D. (NPI 1629658455) is an individual anesthesiology provider in San Francisco, California, licensed in California (206638) and active in the NPI registry since April 2021. She is enrolled in Medicare PECOS, maintains a secondary practice location in San Francisco, and is a graduate of Other (2022).

NPPES Registry Identity

NPI1629658455
Entity TypeIndividualFemale
Primary Taxonomy207L00000X
Provider Legal NameANNETTE LUOCredential: M.D.
Location Address1975 4TH STSan Francisco, CA 94143-2351
Mailing Address1975 4th St, Mission Hall, 5th Floor, Suite 5450San Francisco, CA 94143-2351
Sole ProprietorYes
Medical School CMSOtherGraduated 2022
Enumeration DateApril 14, 2021
Last NPPES UpdateAugust 12, 20266 updates tracked since enumeration
NPPES CertifiedAugust 12, 2026
✔ NPI 1629658455 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 · 206638
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 ListedGeneral PracticeTaxonomy 208D00000X · License 206638 (CA)
1975 4TH ST, San Francisco, CA 94143

Secondary Practice Location 1

Location 11975 4th StSan Francisco, CA 94143-2351 · Phone (415) 476-1000

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Annette Luo M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID3577946284
PECOS Enrollment IDI20251022000177
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 Annette Luo reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

General Practice
4055 VALLEY VIEW LN STE 700
Dallas, TX 75244
  • Reassigned Medicare billing, Illinois enrollment
  • 712 clinicians in this Medicare group

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.

Physical Therapist
1975 4TH ST
SAN FRANCISCO, CA 94143
Pediatrics
1975 4TH ST
SAN FRANCISCO, CA 94143
Anesthesiology
1975 4TH ST
SAN FRANCISCO, CA 94143
Nurse Practitioner (Pediatrics)
1975 4TH ST
SAN FRANCISCO, CA 94143
Pharmacist (Pediatrics)
1975 4TH ST
SAN FRANCISCO, CA 94143
Social Worker (Clinical)
1975 4TH ST
SAN FRANCISCO, CA 94143
Pediatrics (Adolescent Medicine)
1975 4TH ST
SAN FRANCISCO, CA 94143
Nurse Practitioner (Neonatal)
1975 4TH ST
SAN FRANCISCO, CA 94143

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 Annette Luo's NPI number?

The NPI number for Annette Luo is 1629658455. It was assigned to this individual provider in the NPPES registry on April 14, 2021.

Where is Annette Luo located?

Annette Luo practices at 1975 4th St, San Francisco, CA 94143. The listed phone number is (415) 476-1000.

What is Annette Luo's specialty?

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

Is Annette Luo enrolled in Medicare?

Yes. Annette Luo is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Annette Luo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Annette Luo reassigns Medicare benefits to Signify Health Medical Associates, PLLC (Dallas, TX). 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 Annette Luo'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 Annette Luo was last updated on August 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.