MARIAH DESIREE ISLAS NP
NPI 1659267078
Nurse Practitioner - Primary Care in Tucson, AZ
About Mariah Desiree Islas Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARIAH DESIREE ISLAS NP (NPI 1659267078) is an individual primary care provider in Tucson, Arizona, licensed in Arizona (228691) and active in the NPI registry since June 2025. She is enrolled in Medicare PECOS, maintains a secondary practice location in Vail, and is a graduate of Other (2025).
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
Mariah Desiree Islas Np 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 Mariah Islas reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Tempe, AZ 85288
- Reassigned Medicare billing, Arizona enrollment
- 240 clinicians in this Medicare group
Tempe, AZ 85288
- Reassigned Medicare billing, Arizona enrollment
- 367 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 85748 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 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
TUCSON, AZ 85748
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 Mariah Islas's NPI number?
The NPI number for Mariah Islas is 1659267078. It was assigned to this individual provider in the NPPES registry on June 13, 2025.
Where is Mariah Islas located?
Mariah Islas practices at 9525 E Old Spanish Trl, Tucson, AZ 85748. The listed phone number is (773) 531-8069.
What is Mariah Islas's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Primary Care, with taxonomy code 363LP2300X.
Is Mariah Islas enrolled in Medicare?
Yes. Mariah Islas 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 Mariah Islas's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mariah Islas reassigns Medicare benefits to 2 organizations: Nextcare Arizona I Jv LLC (Tempe, AZ) and Nextcare Arizona LLC (Tempe, AZ). 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 Mariah Islas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mariah Islas accept?
Health plans from Blue Cross Blue Shield of Arizona list Mariah Islas 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 Mariah Islas was last updated on June 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# Mariah Desiree Islas, NP · NPI 1659267078
Primary Care physician in Tucson, Arizona. Individual provider, active in the CMS NPPES registry since June 13, 2025.
## Identity
- **NPI:** 1659267078 (Entity type: Individual)
- **Enumerated:** June 13, 2025
- **Primary specialty:** Nurse Practitioner - Primary Care · taxonomy 363LP2300X
- **State license:** 228691 (Arizona)
- **Sole proprietor:** No
## Practice location
- **Address:** 9525 E OLD SPANISH TRL, Tucson, AZ 85748-6631
- **Phone:** (773) 531-8069
## 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): Nextcare Arizona I Jv LLC (NPI 1114798071, Tempe, AZ); Nextcare Arizona LLC (NPI 1043371826, Tempe, AZ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2025
## Record status
- **NPPES last updated:** June 13, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1659267078) · Data from the CMS NPPES public registry.