Ruby Sun
NPI 1639568322 · Certified Registered Nurse Anesthetist · San Leandro, CA
Enrolled with Medicare as Practitioner - Certified Registered Nurse Anesthetist (crna) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ruby Sun is a Certified Registered Nurse Anesthetist provider in San Leandro, CA (NPI 1639568322).
Provider details
- NPI number
- 1639568322
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- 95000261 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 yrs in NPPES registry
- Profile completeness38% of score
100% 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
- 2015-01-18
- Last updated
- 2022-02-11
Frequently asked questions
- What is Ruby Sun's NPI number?
- Ruby Sun's National Provider Identifier (NPI) is 1639568322, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ruby Sun's specialty?
- Ruby Sun is listed in the NPPES registry with a primary specialty of Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Ruby Sun located?
- Ruby Sun's practice location on file with NPPES is 2500 Merced St, San Leandro, CA 94577-4201.
- What is Ruby Sun's phone number?
- The practice phone number listed in the NPPES registry for Ruby Sun is (510) 454-1000.
- Does Ruby Sun accept Medicare?
- Ruby Sun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ruby Sun's NPI active?
- Yes — Ruby Sun's NPI (1639568322) is active in the NPPES registry as of the last update on 2022-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.