Mark Lawrence Sy
NPI 1225507650 · Psychiatric/Mental Health Registered Nurse · Pasadena, CA
Mark Lawrence Sy is a Psychiatric/Mental Health Registered Nurse provider in Pasadena, CA (NPI 1225507650).
Provider details
- NPI number
- 1225507650
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Registered NurseNursing Service Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- 95085268 (CA)
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
7 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
- 2018-11-14
- Last updated
- 2018-11-14
Frequently asked questions
- What is Mark Lawrence Sy's NPI number?
- Mark Lawrence Sy's National Provider Identifier (NPI) is 1225507650, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Lawrence Sy's specialty?
- Mark Lawrence Sy is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Registered Nurse (Nursing Service Providers).
- Where is Mark Lawrence Sy located?
- Mark Lawrence Sy's practice location on file with NPPES is 411 N Carmelo Ave, Pasadena, CA 91107-2500.
- What is Mark Lawrence Sy's phone number?
- The practice phone number listed in the NPPES registry for Mark Lawrence Sy is (626) 484-2538.
- Is Mark Lawrence Sy's NPI active?
- Yes — Mark Lawrence Sy's NPI (1225507650) is active in the NPPES registry as of the last update on 2018-11-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.