Sin Yi Mak, MS, OTR/L
NPI 1427550961 · Occupational Therapist · San Diego, CA
Sin Yi Mak, MS, OTR/L is a Occupational Therapist provider in San Diego, CA (NPI 1427550961).
Provider details
- NPI number
- 1427550961
- Entity type
- Individual
- Primary specialty
- Occupational TherapistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Credential
- MS, OTR/L
- Sex
- Female
- Sole proprietor
- Yes
- License
- OT18437 (CA)
Specialties & taxonomies
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 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
- 2018-03-01
- Last updated
- 2018-03-01
Frequently asked questions
- What is Sin Yi Mak's NPI number?
- Sin Yi Mak's National Provider Identifier (NPI) is 1427550961, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sin Yi Mak's specialty?
- Sin Yi Mak is listed in the NPPES registry with a primary specialty of Occupational Therapist (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is Sin Yi Mak located?
- Sin Yi Mak's practice location on file with NPPES is 6264 Ferris Square, San Diego, CA 92121.
- What is Sin Yi Mak's phone number?
- The practice phone number listed in the NPPES registry for Sin Yi Mak is (619) 940-4128.
- Is Sin Yi Mak's NPI active?
- Yes — Sin Yi Mak's NPI (1427550961) is active in the NPPES registry as of the last update on 2018-03-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.