John Sum, MD
NPI 1194745828 · Neurology with Special Qualifications in Child Neurology Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Sum, MD is a Neurology with Special Qualifications in Child Neurology Physician provider in San Jose, CA (NPI 1194745828).
Provider details
- NPI number
- 1194745828
- Entity type
- Individual
- Primary specialty
- Neurology with Special Qualifications in Child Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G64959 (AL)
Specialties & taxonomies
- Neurology with Special Qualifications in Child Neurology PhysicianPrimary2084N0402XLicense G64959 (AL)
Allopathic & Osteopathic Physicians
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2006-07-19
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Sum's NPI number?
- John Sum's National Provider Identifier (NPI) is 1194745828, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Sum's specialty?
- John Sum is listed in the NPPES registry with a primary specialty of Neurology with Special Qualifications in Child Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is John Sum located?
- John Sum's practice location on file with NPPES is 751 S Bascom Ave, San Jose, CA 95128-2604.
- What is John Sum's phone number?
- The practice phone number listed in the NPPES registry for John Sum is (408) 885-5440.
- Does John Sum accept Medicare?
- John Sum is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Sum's NPI active?
- Yes — John Sum's NPI (1194745828) 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.