IndividualActive
John Ngai, MD
NPI 1538233846 · Surgery Physician · Redwood City, CA
John Ngai, MD is a Surgery Physician provider in Redwood City, CA (NPI 1538233846).
Provider details
- NPI number
- 1538233846
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G72307 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
1150 Veterans Blvd
Redwood City, CA 94063-2037
Phone: (650) 299-2000
Street-level locationGet directions
Mailing address
1800 Harrison St Fl 7
Oakland, CA 94612-3429
Registry dates
- Enumerated
- 2006-11-20
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Ngai's NPI number?
- John Ngai's National Provider Identifier (NPI) is 1538233846, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Ngai's specialty?
- John Ngai is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is John Ngai located?
- John Ngai's practice location on file with NPPES is 1150 Veterans Blvd, Redwood City, CA 94063-2037.
- What is John Ngai's phone number?
- The practice phone number listed in the NPPES registry for John Ngai is (650) 299-2000.
- Is John Ngai's NPI active?
- Yes — John Ngai's NPI (1538233846) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.