DR. WALESKA LYNN DIAZ DNP, FNP-C
NPI 1629653217
Nurse Practitioner - Family in Chatham, NJ
About Dr. Waleska Lynn Diaz Dnp, Fnp-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WALESKA LYNN DIAZ DNP, FNP-C (NPI 1629653217) is an individual family provider in Chatham, New Jersey, licensed in New Jersey (26NJ01128200) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS, maintains a secondary practice location in Roselle, and is a graduate of Other (2021).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
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. Waleska Lynn Diaz Dnp, Fnp-c 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
5Medicare enrollment records show Waleska Diaz reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
South Plainfield, NJ 07080
- Reassigned Medicare billing, New Jersey enrollment
- 40 clinicians in this Medicare group
Bound Brook, NJ 08805
- Reassigned Medicare billing, New Jersey enrollment
- 125 clinicians in this Medicare group
Bayonne, NJ 07002
- Reassigned Medicare billing, New Jersey enrollment
- 637 clinicians in this Medicare group
Old Bridge, NJ 08857
- Reassigned Medicare billing, New Jersey enrollment
- 68 clinicians in this Medicare group
Freehold, NJ 07728
- Reassigned Medicare billing, New Jersey enrollment
- 95 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 9
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 07928 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 9
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 Waleska Diaz's NPI number?
The NPI number for Waleska Diaz is 1629653217. It was assigned to this individual provider in the NPPES registry on March 15, 2021.
Where is Waleska Diaz located?
Waleska Diaz practices at 471 Main St, Chatham, NJ 07928. The listed phone number is (973) 635-4636.
What is Waleska Diaz's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Waleska Diaz enrolled in Medicare?
Yes. Waleska 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 organizations bill Medicare for Waleska Diaz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Waleska Diaz reassigns Medicare benefits to 5 organizations: Browne Medical, LLC (South Plainfield, NJ), Jersey Irish Medical (Bound Brook, NJ), Garden State Healthcare Associates, LLC (Bayonne, NJ), Excel Urgent Care Of Nj LLC (Old Bridge, NJ) and Hackensack Meridian Urgent Care, PC (Freehold, 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 Waleska Diaz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Waleska Diaz accept?
Health plans from Oscar Health list Waleska Diaz as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Waleska Diaz was last updated on June 16, 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. Waleska Lynn Diaz, DNP, FNP-C · NPI 1629653217
Family physician in Chatham, New Jersey. Individual provider, active in the CMS NPPES registry since March 15, 2021.
## Identity
- **NPI:** 1629653217 (Entity type: Individual)
- **Enumerated:** March 15, 2021
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 26NJ01128200 (New Jersey)
- **Sole proprietor:** No
## Practice location
- **Address:** 471 MAIN ST, Chatham, NJ 07928-2102
- **Phone:** (973) 635-4636
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Browne Medical, LLC (NPI 1851733349, South Plainfield, NJ); Jersey Irish Medical (NPI 1144575739, Bound Brook, NJ); Garden State Healthcare Associates, LLC (NPI 1700014545, Bayonne, NJ); Excel Urgent Care Of Nj LLC (NPI 1255742243, Old Bridge, NJ); Hackensack Meridian Urgent Care, PC (NPI 1285165209, Freehold, NJ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2021
## Record status
- **NPPES last updated:** June 16, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1629653217) · Data from the CMS NPPES public registry.