Nicholas Royster
NPI 1437834447 · Addiction (Substance Use Disorder) Counselor · Redwood City, CA
Nicholas Royster is a Addiction (Substance Use Disorder) Counselor provider in Redwood City, CA (NPI 1437834447).
Provider details
- NPI number
- 1437834447
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 13801-RAC (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 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)
- 2560 Pulgas AveEast Palo Alto, CA 94303-1323Phone: (650) 364-7988
Registry dates
- Enumerated
- 2023-06-19
- Last updated
- 2023-06-19
- Certified
- 2023-06-16
Frequently asked questions
- What is Nicholas Royster's NPI number?
- Nicholas Royster's National Provider Identifier (NPI) is 1437834447, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicholas Royster's specialty?
- Nicholas Royster is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Nicholas Royster located?
- Nicholas Royster's practice location on file with NPPES is 631 Woodside Rd, Redwood City, CA 94061-3847.
- What is Nicholas Royster's phone number?
- The practice phone number listed in the NPPES registry for Nicholas Royster is (650) 367-9030.
- Is Nicholas Royster's NPI active?
- Yes — Nicholas Royster's NPI (1437834447) is active in the NPPES registry as of the last update on 2023-06-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.