Catherine Siu
NPI 1396684593 · Student in an Organized Health Care Education/Training Program · Stony Brook, NY
Catherine Siu is a Student in an Organized Health Care Education/Training Program provider in Stony Brook, NY (NPI 1396684593).
Provider details
- NPI number
- 1396684593
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in 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
- 2026-03-25
- Last updated
- 2026-03-25
- Certified
- 2026-03-25
Frequently asked questions
- What is Catherine Siu's NPI number?
- Catherine Siu's National Provider Identifier (NPI) is 1396684593, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Siu's specialty?
- Catherine Siu is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Catherine Siu located?
- Catherine Siu's practice location on file with NPPES is 101 Nicolls Rd, Stony Brook, NY 11794-8434.
- What is Catherine Siu's phone number?
- The practice phone number listed in the NPPES registry for Catherine Siu is (631) 216-9094.
- Is Catherine Siu's NPI active?
- Yes — Catherine Siu's NPI (1396684593) is active in the NPPES registry as of the last update on 2026-03-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.