DR. GERALD MORAL DIAZ M.D.
NPI 1669784443
Internal Medicine in San Jose, CA
About Dr. Gerald Moral Diaz M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GERALD MORAL DIAZ M.D. (NPI 1669784443) is an individual internal medicine provider in San Jose, California, licensed in California (A126359) and active in the NPI registry since July 2010. He is enrolled in Medicare PECOS, maintains a secondary practice location in Detroit, and is a graduate of Saint Louis University School Of Medicine (2010).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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
Dr. Gerald Moral Diaz M.d. 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 Gerald Diaz 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
- Also billed through NPI 1588721500 (California), NPI 1629301346 (California)
- 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.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 Gerald Diaz's NPI number?
The NPI number for Gerald Diaz is 1669784443. It was assigned to this individual provider in the NPPES registry on July 8, 2010.
Where is Gerald Diaz located?
Gerald Diaz practices at 751 S Bascom Ave, San Jose, CA 95128. The listed phone number is (408) 368-6498.
What is Gerald Diaz's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Gerald Diaz enrolled in Medicare?
Yes. Gerald Diaz 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 Gerald Diaz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gerald Diaz 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 Gerald Diaz'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 Gerald Diaz was last updated on March 18, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Dr. Gerald Moral Diaz, M.D. · NPI 1669784443
Internal Medicine physician in San Jose, California. Individual provider, active in the CMS NPPES registry since July 8, 2010.
## Identity
- **NPI:** 1669784443 (Entity type: Individual)
- **Enumerated:** July 8, 2010
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A126359 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 751 S BASCOM AVE, San Jose, CA 95128-2699
- **Phone:** (408) 368-6498
## 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:** County Of Santa Clara (NPI 1154906634, San Jose, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Saint Louis University School Of Medicine, class of 2010
## Record status
- **NPPES last updated:** March 18, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1669784443) · Data from the CMS NPPES public registry.