John Sun, M.D.
NPI 1841723228 · Anesthesiology Physician · Redwood City, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Sun, M.D. is a Anesthesiology Physician provider in Redwood City, CA (NPI 1841723228).
Provider details
- NPI number
- 1841723228
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Registry dates
- Enumerated
- 2017-04-04
- Last updated
- 2022-09-04
- Certified
- 2022-09-04
Frequently asked questions
- What is John Sun's NPI number?
- John Sun's National Provider Identifier (NPI) is 1841723228, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Sun's specialty?
- John Sun is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is John Sun located?
- John Sun's practice location on file with NPPES is 1100 Veterans Blvd, Redwood City, CA 94063-2037.
- What is John Sun's phone number?
- The practice phone number listed in the NPPES registry for John Sun is (650) 299-2000.
- Does John Sun accept Medicare?
- John Sun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Sun's NPI active?
- Yes — John Sun's NPI (1841723228) is active in the NPPES registry as of the last update on 2022-09-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.