JACK JOON-SUNG CHOI M.D.
NPI 1710186713
Emergency Medicine in Walnut Creek, CA

Q: What is Jack Choi's NPI number?

The NPI number for Jack Choi is 1710186713. It was assigned to this individual provider in the NPPES registry on July 11, 2007.

Q: What is Jack Choi's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Q: When was this NPI record last updated?

The NPPES record for Jack Choi was last updated on November 18, 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 July 11, 2007PECOS EnrolledAccepts Medicare Assignment

1425 S MAIN ST, HOSPITAL NORTH, 1ST FLOOR, WALNUT CREEK, CA 94596(510) 625-6262 Get Directions Write a Review

NPPES record last updated: November 18, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Jack Joon-sung Choi M.d. NPPES

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

JACK JOON-SUNG CHOI M.D. (NPI 1710186713) is an individual emergency medicine provider in Walnut Creek, California, licensed in California (A99061) and active in the NPI registry since July 2007. He is enrolled in Medicare PECOS and is a graduate of Albert Einstein College Of Medicine Of Yeshiva University (2002).

NPPES Registry Identity

NPI1710186713

Entity TypeIndividualMale

Primary Taxonomy207P00000X

Provider Legal NameJACK JOON-SUNG CHOICredential: M.D.

Location Address1425 S MAIN ST, HOSPITAL NORTH, 1ST FLOORWalnut Creek, CA 94596-5318

Mailing Address1425 S Main St, Hospital North, 1st FloorWalnut Creek, CA 94596-5318 · (510) 625-6262

Phone(510) 625-6262

Sole ProprietorYes

Medical School CMSAlbert Einstein College Of Medicine Of Yeshiva UniversityGraduated 2002

Enumeration DateJuly 11, 2007

Last NPPES UpdateNovember 18, 2021

NPPES CertifiedNovember 18, 2021

✔ NPI 1710186713 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207P00000X

License✔ Licensed in CA · A99061

Definition

An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

1425 S MAIN ST, Walnut Creek, CA 94596

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Jack Joon-sung Choi 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 ID7810083763

PECOS Enrollment IDI20071023000692

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.

Areas of Expertise CMS Part B claims

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.

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94596 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$104.51 typical visit price

range $69.00 – $202.35

Typical copayment $26.12 (range $17.25 – $50.58)

Most-billed visit code 99203

Established Patient

$119.48 typical visit price

range $23.44 – $166.46

Typical copayment $29.87 (range $5.86 – $41.61)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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