CAROL GUARNIERI FNP-BC
NPI 1457643249
Nurse Practitioner - Family in Scottsdale, AZ
About Carol Guarnieri Fnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CAROL GUARNIERI FNP-BC (NPI 1457643249) is an individual family provider in Scottsdale, Arizona, licensed in Arizona (AP6173) and active in the NPI registry since May 2011. She is enrolled in Medicare PECOS and is a graduate of Other (2010).
NPPES Registry Identity
Specialties & Licenses
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
Carol Guarnieri Fnp-bc 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 Carol Guarnieri reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Scottsdale, AZ 85260
- Reassigned Medicare billing, Arizona enrollment
- 822 clinicians in this Medicare group
Scottsdale, AZ 85260
- Reassigned Medicare billing, Arizona enrollment
- 267 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
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 85260 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
SCOTTSDALE, AZ 85260
SCOTTSDALE, AZ 85260
SCOTTSDALE, AZ 85260
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 Carol Guarnieri's NPI number?
The NPI number for Carol Guarnieri is 1457643249. It was assigned to this individual provider in the NPPES registry on May 11, 2011.
Where is Carol Guarnieri located?
Carol Guarnieri practices at 9003 E Shea Blvd, Scottsdale, AZ 85260. The listed phone number is (480) 323-3336.
What is Carol Guarnieri's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Carol Guarnieri enrolled in Medicare?
Yes. Carol Guarnieri 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 Carol Guarnieri's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Carol Guarnieri reassigns Medicare benefits to 2 organizations: Honorhealth Ambulatory (Scottsdale, AZ) and Honorhealth (Scottsdale, 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 Carol Guarnieri's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Carol Guarnieri accept?
Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Blue Cross Blue Shield of Arizona, Cigna HealthCare of Arizona, Inc and Oscar Health Plan, Inc. list Carol Guarnieri 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 Carol Guarnieri was last updated on December 21, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Carol Guarnieri, FNP-BC · NPI 1457643249
Family physician in Scottsdale, Arizona. Individual provider, active in the CMS NPPES registry since May 11, 2011.
## Identity
- **NPI:** 1457643249 (Entity type: Individual)
- **Enumerated:** May 11, 2011
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** AP6173 (Arizona)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 9003 E SHEA BLVD, Scottsdale, AZ 85260-6709
- **Phone:** (480) 323-3336 · **Fax:** (480) 323-3334
## 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): Honorhealth Ambulatory (NPI 1023779451, Scottsdale, AZ); Honorhealth (NPI 1386608859, Scottsdale, AZ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2010
## Record status
- **NPPES last updated:** December 21, 2015
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Source: [NPI Profile](https://npiprofile.com/npi/1457643249) · Data from the CMS NPPES public registry.