DR. SONJA NICOLE LOO M.D.
NPI 1952563108
Anesthesiology in Santa Monica, CA

Q: What is Sonja Loo's NPI number?

The NPI number for Sonja Loo is 1952563108. It was assigned to this individual provider in the NPPES registry on June 30, 2008. The provider is also known as Dr. Sonja Nicole Kuchling M.D..

Q: What is Sonja Loo'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 Sonja Loo was last updated on November 19, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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 June 30, 2008PECOS EnrolledAccepts Medicare Assignment

2121 SANTA MONICA BLVD, C/O ANESTHESIA DEPARTMENT ST. JOHN'S HEALTH CENTER, SANTA MONICA, CA 90404(503) 468-6333 Get Directions Write a Review

NPPES record last updated: November 19, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Dr. Sonja Nicole Loo M.d. NPPES

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

DR. SONJA NICOLE LOO M.D. (NPI 1952563108) is an individual anesthesiology provider in Santa Monica, California, licensed in California (A123220) and active in the NPI registry since June 2008. She is enrolled in Medicare PECOS and is a graduate of Medical College Of Wisconsin (2008).

NPPES Registry Identity

NPI1952563108

Entity TypeIndividualFemale

Primary Taxonomy207L00000X

Provider Legal NameDR. SONJA NICOLE LOOCredential: M.D.

Location Address2121 SANTA MONICA BLVD, C/O ANESTHESIA DEPARTMENT ST. JOHN'S HEALTH CENTERSanta Monica, CA 90404-2303

Mailing Address2121 Santa Monica Blvd, C/o Anesthesia Department St. John's Health CenterSanta Monica, CA 90404-2303 · (503) 468-6333

Phone(503) 468-6333

Sole ProprietorNo

Medical School CMSMedical College Of WisconsinGraduated 2008

Enumeration DateJune 30, 2008

Last NPPES UpdateNovember 19, 2013

✔ NPI 1952563108 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207L00000X

License✔ Licensed in CA · A123220

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.

2121 SANTA MONICA BLVD, Santa Monica, CA 90404

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Other Names 1

Former Name (1)Dr. Sonja Nicole Kuchling M.d.

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

Dr. Sonja Nicole Loo M.d. 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 ID7618124892

PECOS Enrollment IDI20140106000714

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 Reassignments

Medicare enrollment records show Sonja Loo reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Bayside Anesthesia Medical Group

Same address

Pain Medicine

2121 SANTA MONICA BLVD
Santa Monica, CA 90404

Reassigned Medicare billing, California enrollment
83 clinicians in this Medicare group

NPI 1184668469 (310) 576-7267

Anesthesia Specialists Of Orange County, Inc.

34 mi

Anesthesiology

1211 W LA PALMA AVE, SUITE 209
Anaheim, CA 92801

Reassigned Medicare billing, California enrollment
73 clinicians in this Medicare group

NPI 1134311319 (877) 594-2787

Western Anesthesia Medical Associates Inc

57 mi

Anesthesiology

27700 MEDICAL CENTER RD
Mission Viejo, CA 92691

Reassigned Medicare billing, California enrollment
56 clinicians in this Medicare group

NPI 1497796320 (949) 364-1400

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 3

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.

15 services15 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.

14 services14 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.

13 services13 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.

MINA RIM KANG MD

Hospitalist