Yun Sok Choi, MD
NPI 1669527164 · Anesthesiology Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Yun Sok Choi, MD is a Anesthesiology Physician provider in Walnut Creek, CA (NPI 1669527164).
Provider details
- NPI number
- 1669527164
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G75578 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 2637 Shadelands DrWalnut Creek, CA 94598-2512Phone: (925) 627-3424
Registry dates
- Enumerated
- 2007-01-24
- Last updated
- 2024-12-02
- Certified
- 2024-12-02
Frequently asked questions
- What is Yun Sok Choi's NPI number?
- Yun Sok Choi's National Provider Identifier (NPI) is 1669527164, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Yun Sok Choi's specialty?
- Yun Sok Choi is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Yun Sok Choi located?
- Yun Sok Choi's practice location on file with NPPES is 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598-3122.
- What is Yun Sok Choi's phone number?
- The practice phone number listed in the NPPES registry for Yun Sok Choi is (925) 939-3000.
- Does Yun Sok Choi accept Medicare?
- Yun Sok Choi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Yun Sok Choi's NPI active?
- Yes — Yun Sok Choi's NPI (1669527164) is active in the NPPES registry as of the last update on 2024-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.