Physician Profile
Unclaimed ProfileAbout CHOI
Based in Walnut Creek, CA, Jack Joon-Sung Choi, M.D. is listed in the NPI registry under emergency medicine. Jack graduated from Albert Einstein College of Medicine of Yeshiva University in 2002.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What kind of doctor is Dr. Choi?
Dr. Choi is an emergency medicine in Walnut Creek, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “EMERGENCY MEDICINE”.
NPI registry
What is Dr. Choi's address?
Dr. Choi is listed at 1425 S MAIN ST HOSPITAL NORTH, 1ST FLOOR, Walnut Creek, CA 94596. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Choi?
The number on file is (510) 625-6262. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Choi?
Dr. Choi's National Provider Identifier is 1710186713. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Choi train?
Dr. Choi attended Albert Einstein College of Medicine of Yeshiva University, graduating in 2002. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Choi have?
Dr. Choi has 24 years experience. Calculated from a graduation year of 2002, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Choi perform?
According to Medicare billing data, Dr. Choi the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Choi's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Choi. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (510) 625-6262
- Email not available
Practice Locations
1425 S MAIN ST HOSPITAL NORTH, 1ST FLOOR
Walnut Creek, CA 94596
Procedures Most Often Billed to Medicare
11 services · 11 patients · 1 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
11 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other emergency medicines at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 23 related providers in 3 groups
Other emergency medicines in Walnut Creek 7
Same specialty, same city.
Trained at Albert Einstein College of Medicine of Yeshiva University 8
Other providers in the same specialty who trained at the same institution.
Class of 2002 at Albert Einstein College of Medicine of Yeshiva University 8
Providers who graduated from the same medical school in the same year.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.