DR. ADRIAN ALBERTO DIEZ MD
NPI 1619499431
Emergency Medicine in Edison, NJ
About Dr. Adrian Alberto Diez Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ADRIAN ALBERTO DIEZ MD (NPI 1619499431) is an individual emergency medicine provider in Edison, New Jersey, licensed in New Jersey (25MA10779300) and active in the NPI registry since July 2017. He is enrolled in Medicare PECOS, is affiliated with Jfk Medical Center, and maintains a secondary practice location in New Brunswick.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Dr. Adrian Alberto Diez 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
3Medicare enrollment records show Adrian Diez reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Edison, NJ 08820
- Reassigned Medicare billing, New Jersey enrollment
- 156 clinicians in this Medicare group
Plainfield, NJ 07060
- Reassigned Medicare billing, New Jersey enrollment
- 103 clinicians in this Medicare group
Summit, NJ 07901
- Reassigned Medicare billing, New Jersey enrollment
- 436 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Jfk Medical Center
Acute Care Hospitals · Edison, NJPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 08820 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.
Reported Quality Measures
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.
EDISON, NJ 08820
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 Adrian Diez's NPI number?
The NPI number for Adrian Diez is 1619499431. It was assigned to this individual provider in the NPPES registry on July 13, 2017.
Where is Adrian Diez located?
Adrian Diez practices at 65 James St, Edison, NJ 08820. The listed phone number is (732) 321-7000.
What is Adrian Diez's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Adrian Diez enrolled in Medicare?
Yes. Adrian Diez 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 Adrian Diez's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Adrian Diez reassigns Medicare benefits to 3 organizations: Middlesex Emergency Physicians, P.A. (Edison, NJ), Plainfield Emergency Physicians, PA (Plainfield, NJ) and Emergency Physician Associates Of North Jersey P C (Summit, NJ). 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 Adrian Diez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Adrian Diez affiliated with any hospitals?
According to CMS data, Adrian Diez is affiliated with Jfk Medical Center.
When was this NPI record last updated?
The NPPES record for Adrian Diez was last updated on June 9, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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. Adrian Alberto Diez, MD · NPI 1619499431
Emergency Medicine physician in Edison, New Jersey. Individual provider, active in the CMS NPPES registry since July 13, 2017.
## Identity
- **NPI:** 1619499431 (Entity type: Individual)
- **Enumerated:** July 13, 2017
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 25MA10779300 (New Jersey)
- **Sole proprietor:** No
## Practice location
- **Address:** 65 JAMES ST, Edison, NJ 08820-3947
- **Phone:** (732) 321-7000
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Middlesex Emergency Physicians, P.A. (NPI 1811921760, Edison, NJ); Plainfield Emergency Physicians, PA (NPI 1659309680, Plainfield, NJ); Emergency Physician Associates Of North Jersey P C (NPI 1497783419, Summit, NJ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** June 9, 2023
- **Other identifiers:** Medicaid 0737640 (NJ)
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Source: [NPI Profile](https://npiprofile.com/npi/1619499431) · Data from the CMS NPPES public registry.