DR. ROBERT GONZALES ATIENZA MD
NPI 1609134725
Pathology - Anatomic Pathology & Clinical Pathology in San Jose, CA
About Dr. Robert Gonzales Atienza Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ROBERT GONZALES ATIENZA MD (NPI 1609134725) is an individual anatomic pathology & clinical pathology provider in San Jose, California, licensed in California (A137783) and active in the NPI registry since April 2012. He is enrolled in Medicare PECOS and is a graduate of Other (2009).
NPPES Registry Identity
Specialties & Licenses
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
Dr. Robert Gonzales Atienza 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 Reassignments
2Medicare enrollment records show Robert Atienza reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Santa Clara, CA 95051
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Lancaster, CA 93535
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: County Of Los Angeles
- 1,939 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 95119 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.
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 Robert Atienza's NPI number?
The NPI number for Robert Atienza is 1609134725. It was assigned to this individual provider in the NPPES registry on April 26, 2012.
Where is Robert Atienza located?
Robert Atienza practices at 250 Hospital Pkwy, San Jose, CA 95119. The listed phone number is (408) 972-7454.
What is Robert Atienza's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.
Is Robert Atienza enrolled in Medicare?
Yes. Robert Atienza 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 organizations bill Medicare for Robert Atienza's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Robert Atienza reassigns Medicare benefits to 2 organizations: Permanente Medical Group Inc (Santa Clara, CA) and County Of Los Angeles Auditor Controller (Lancaster, CA). Each 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 Robert Atienza'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 Robert Atienza was last updated on October 29, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 months 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.
# Dr. Robert Gonzales Atienza, MD · NPI 1609134725
Anatomic Pathology & Clinical Pathology physician in San Jose, California. Individual provider, active in the CMS NPPES registry since April 26, 2012.
## Identity
- **NPI:** 1609134725 (Entity type: Individual)
- **Enumerated:** April 26, 2012
- **Primary specialty:** Pathology - Anatomic Pathology & Clinical Pathology · taxonomy 207ZP0102X
- **State license:** A137783 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 250 HOSPITAL PKWY, San Jose, CA 95119-1103
- **Phone:** (408) 972-7454
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Permanente Medical Group Inc (NPI 1073606299, Santa Clara, CA); County Of Los Angeles Auditor Controller (NPI 1366453045, Lancaster, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2009
## Record status
- **NPPES last updated:** October 29, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1609134725) · Data from the CMS NPPES public registry.