MR. RONALD ZACK NP-C
NPI 1104375732
Nurse Practitioner - Family in Tucson, AZ
About Mr. Ronald Zack Np-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. RONALD ZACK NP-C (NPI 1104375732) is an individual family provider in Tucson, Arizona, licensed in Arizona (259986) and active in the NPI registry since September 2016. He is enrolled in Medicare PECOS, maintains a secondary practice location in Tucson, and is a graduate of Other (2021).
NPPES Registry Identity
Specialties & Licenses 2
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 (PECOS)
Mr. Ronald Zack Np-c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Ronald Zack reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Sierra Vista, AZ 85635
- Reassigned Medicare billing, Arizona enrollment
- 372 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 2
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 85710 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.
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
TUCSON, AZ 85710
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 Ronald Zack's NPI number?
The NPI number for Ronald Zack is 1104375732. It was assigned to this individual provider in the NPPES registry on September 23, 2016.
Where is Ronald Zack located?
Ronald Zack practices at 6630 E Carondelet Dr, Tucson, AZ 85710. The listed phone number is (520) 496-4649.
What is Ronald Zack's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Ronald Zack enrolled in Medicare?
Yes. Ronald Zack is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Ronald Zack's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ronald Zack reassigns Medicare benefits to Cogent Healthcare Of Arizona PC (Sierra Vista, AZ). 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 Ronald Zack'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 Ronald Zack was last updated on May 30, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.