JOHN MATTHEW SUM MD
NPI 1194745828
Psychiatry & Neurology - Neurology with Special Qualifications in Child Neurology in San Jose, CA
About John Matthew Sum Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN MATTHEW SUM MD (NPI 1194745828) is an individual neurology with special qualifications in child neurology provider in San Jose, California, licensed in Alabama (G64959) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
John Matthew Sum Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show John Sum reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Jose, CA 95128
- Reassigned Medicare billing, California enrollment
- 2,460 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 95128 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN JOSE, CA 95128
SAN JOSE, CA 95128
SAN JOSE, CA 95128
SAN JOSE, CA 95128
SAN JOSE, CA 95128
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Sum's NPI number?
The NPI number for John Sum is 1194745828. It was assigned to this individual provider in the NPPES registry on July 19, 2006.
Where is John Sum located?
John Sum practices at 751 S Bascom Ave Pediatric Neurology Dept, San Jose, CA 95128. The listed phone number is (408) 885-5440.
What is John Sum's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology with Special Qualifications in Child Neurology, with taxonomy code 2084N0402X.
Is John Sum enrolled in Medicare?
Yes. John Sum is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for John Sum's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Sum reassigns Medicare benefits to County Of Santa Clara (San Jose, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Sum's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for John Sum was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# John Matthew Sum, MD · NPI 1194745828
Neurology with Special Qualifications in Child Neurology physician in San Jose, California. Individual provider, active in the CMS NPPES registry since July 19, 2006.
## Identity
- **NPI:** 1194745828 (Entity type: Individual)
- **Enumerated:** July 19, 2006
- **Primary specialty:** Psychiatry & Neurology - Neurology with Special Qualifications in Child Neurology · taxonomy 2084N0402X
- **State license:** G64959 (Alabama)
- **Sole proprietor:** No
## Practice location
- **Address:** 751 S BASCOM AVE, PEDIATRIC NEUROLOGY DEPT, San Jose, CA 95128-2604
- **Phone:** (408) 885-5440
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** County Of Santa Clara (NPI 1154906634, San Jose, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Medicaid 00G649590 (CA); Medicare UPIN F42757 (CA); Medicare ID-Type Unspecified 00G649590 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1194745828) · Data from the CMS NPPES public registry.