William Seijas, CCRN-CMC
NPI 1679465835 · Critical Care Medicine Registered Nurse · Paterson, NJ
William Seijas, CCRN-CMC is a Critical Care Medicine Registered Nurse provider in Paterson, NJ (NPI 1679465835).
Provider details
- NPI number
- 1679465835
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine Registered NurseNursing Service Providers
- Credential
- CCRN-CMC
- Sex
- Male
- Sole proprietor
- Yes
- License
- 26NR26076800 (NJ)
Specialties & taxonomies
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr 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
- 2025-07-21
- Last updated
- 2025-07-21
- Certified
- 2025-07-21
Frequently asked questions
- What is William Seijas's NPI number?
- William Seijas's National Provider Identifier (NPI) is 1679465835, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Seijas's specialty?
- William Seijas is listed in the NPPES registry with a primary specialty of Critical Care Medicine Registered Nurse (Nursing Service Providers).
- Where is William Seijas located?
- William Seijas's practice location on file with NPPES is 703 Main St, Paterson, NJ 07503-2621.
- What is William Seijas's phone number?
- The practice phone number listed in the NPPES registry for William Seijas is (973) 754-2000.
- Is William Seijas's NPI active?
- Yes — William Seijas's NPI (1679465835) is active in the NPPES registry as of the last update on 2025-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.