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SARAH JOO MD
NPI 1275923492
Anesthesiology in Walnut Creek, CA

Active since January 26, 2015PECOS EnrolledAccepts Medicare Assignment
1425 S MAIN ST, WALNUT CREEK, CA 94596(925) 295-4070 Get Directions Write a Review

NPPES record last updated: March 2, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 7, 2022, Jul 31, 2021, Mar 25, 2017 (3 updates tracked since 2017).

About Sarah Joo Md NPPES

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

SARAH JOO MD (NPI 1275923492) is an individual anesthesiology provider in Walnut Creek, California, licensed in New York (309336) and active in the NPI registry since January 2015. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Johns Hopkins University School Of Medicine (2017).

NPPES Registry Identity

NPI1275923492
Entity TypeIndividualFemale
Primary Taxonomy207L00000X
Provider Legal NameSARAH JOOCredential: MD
Location Address1425 S MAIN STWalnut Creek, CA 94596-5318
Mailing Address1425 S Main StWalnut Creek, CA 94596-5318 · (201) 543-9693
Phone(925) 295-4070
Sole ProprietorYes
Medical School CMSJohns Hopkins University School Of MedicineGraduated 2017
Enumeration DateJanuary 26, 2015
Last NPPES UpdateMarch 2, 20243 updates tracked since enumeration
NPPES CertifiedMarch 2, 2024
✔ NPI 1275923492 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in NY · 309336
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 ListedAnesthesiology · Pain MedicineTaxonomy 207LP2900X · License 309336 (NY)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
1425 S MAIN ST, Walnut Creek, CA 94596
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Secondary Practice Locations 2

Location 11000 10th Ave Rm 1G-33New York, NY 10019-1147 · Phone (718) 523-6915
Location 2535 E 70th StNew York, NY 10021-4823 · Phone (201) 543-9693

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

Sarah Joo Md 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 ID2466837943
PECOS Enrollment IDI20240228003610
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 Sarah Joo reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc
17 mi
Internal Medicine
901 NEVIN
Richmond, CA 94801
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1235226531 (510) 307-1555

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.

BROOK ANDREW WOOLLEY M.D.
Emergency Medicine
1425 S MAIN ST, EMERGENCY MEDICINE DEPARTMENT
WALNUT CREEK, CA 94596
Contra Costa County (925) 295-5100
DR. THOMAS CRESANTE D.O.
Hospitalist
1425 S MAIN ST, KAISER PERMANENTE WALNUT CREEK ATTN: HBS DEPT
WALNUT CREEK, CA 94596
Contra Costa County (925) 295-4643
SARA WON MD
Obstetrics & Gynecology
1425 S MAIN ST
WALNUT CREEK, CA 94596
Contra Costa County (925) 295-4040
KAISER PERMANENTE
General Acute Care Hospital
1425 S MAIN ST
WALNUT CREEK, CA 94596
Contra Costa County (925) 295-4000
MICHELLE CABLE VU CRNA
Nurse Anesthetist, Certified Registered
1425 S MAIN ST
WALNUT CREEK, CA 94596
Contra Costa County (925) 295-4000
DR. JESUS GIL JIMENEZ MD
Surgery (Vascular Surgery)
1425 S MAIN ST
WALNUT CREEK, CA 94596
Contra Costa County (925) 295-4110
MR. EDWARD HAL PIECZENIK L.C.S.W.
Social Worker (Clinical)
1425 S MAIN ST
WALNUT CREEK, CA 94596
Contra Costa County (925) 295-5237
CARLOS A. CROMEYER MD
Psychiatry & Neurology (Neurology)
1425 S MAIN ST
WALNUT CREEK, CA 94596
Contra Costa County (925) 295-4000

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 Sarah Joo's NPI number?

The NPI number for Sarah Joo is 1275923492. It was assigned to this individual provider in the NPPES registry on January 26, 2015.

Where is Sarah Joo located?

Sarah Joo practices at 1425 S Main St, Walnut Creek, CA 94596. The listed phone number is (925) 295-4070.

What is Sarah Joo's specialty?

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

Is Sarah Joo enrolled in Medicare?

Yes. Sarah Joo 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 Sarah Joo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sarah Joo reassigns Medicare benefits to Permanente Medical Group Inc (Richmond, 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 Sarah Joo'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 Sarah Joo was last updated on March 2, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.