JOHN GIDDENS JR. MD
NPI 1417934803
Internal Medicine in Fremont, CA
About John Giddens Jr. Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN GIDDENS JR. MD (NPI 1417934803) is an individual internal medicine provider in Fremont, California, licensed in California (G45185) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS and is a graduate of University Of California, Davis School Of Medicine (1980).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
John Giddens Jr. Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show John Giddens reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Sunnyvale, CA 94085
- Reassigned Medicare billing, California enrollment
- 304 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 94538 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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Giddens's NPI number?
The NPI number for John Giddens is 1417934803. It was assigned to this individual provider in the NPPES registry on December 27, 2005.
Where is John Giddens located?
John Giddens practices at 3161 Walnut Avenue, Fremont, CA 94538. The listed phone number is (510) 796-1000.
What is John Giddens's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is John Giddens enrolled in Medicare?
Yes. John Giddens is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for John Giddens's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Giddens reassigns Medicare benefits to American Current Care Of California, A Medical Corporation (Sunnyvale, 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 Giddens'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 Giddens was last updated on May 9, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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 Giddens Jr., MD · NPI 1417934803
Internal Medicine physician in Fremont, California. Individual provider, active in the CMS NPPES registry since December 27, 2005.
## Identity
- **NPI:** 1417934803 (Entity type: Individual)
- **Enumerated:** December 27, 2005
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** G45185 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 3161 WALNUT AVENUE, Fremont, CA 94538
- **Phone:** (510) 796-1000 · **Fax:** (510) 796-1050
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** American Current Care Of California, A Medical Corporation (NPI 1831665223, Sunnyvale, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Davis School Of Medicine, class of 1980
## Record status
- **NPPES last updated:** May 9, 2012
- **Other identifiers:** Medicare UPIN A49929
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Source: [NPI Profile](https://npiprofile.com/npi/1417934803) · Data from the CMS NPPES public registry.