MARY ELIZABETH MYLCHREEST APRN (FNP-C)
NPI 1497575039
Nurse Practitioner - Family in Phoenix, AZ

Active since October 16, 2024PECOS EnrolledAccepts Medicare Assignment
19829 N 27TH AVE, PHOENIX, AZ 85027(623) 879-6100 Get Directions Write a Review

NPPES record last updated: December 11, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mary Elizabeth Mylchreest Aprn (fnp-c) NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARY ELIZABETH MYLCHREEST APRN (FNP-C) (NPI 1497575039) is an individual family provider in Phoenix, Arizona, licensed in Arizona (317303) and active in the NPI registry since October 2024. She is enrolled in Medicare PECOS and is a graduate of Other (2024).

NPPES Registry Identity

NPI1497575039
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMARY ELIZABETH MYLCHREESTCredential: APRN (FNP-C)
Location Address19829 N 27TH AVEPhoenix, AZ 85027-4001
Mailing Address19636 N 27th Ave Ste 408Phoenix, AZ 85027-4021 · (623) 780-0100
Sole ProprietorNo
Medical School CMSOtherGraduated 2024
Enumeration DateOctober 16, 2024
Last NPPES UpdateDecember 11, 2024
NPPES CertifiedDecember 11, 2024
✔ NPI 1497575039 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in AZ · 317303
Also ListedRegistered Nurse · GastroenterologyTaxonomy 163WG0100X · License RN203810 (AZ)
19829 N 27TH AVE, Phoenix, AZ 85027

Other Names 1

Former Name (1)Mary Elizabeth Grades Rn

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

Mary Elizabeth Mylchreest Aprn (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.

PECOS PAC ID1456873116
PECOS Enrollment IDI20250321003031
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Mary Mylchreest reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Cardiovascular Disease
19841 N 27TH AVE STE 101
Phoenix, AZ 85027
  • Reassigned Medicare billing, Arizona enrollment
  • 822 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 85027 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$85.89 typical visit price
range $55.44 – $168.60
Typical copayment $21.47 (range $13.86 – $42.15)
Most-billed visit code 99203
Established Patient
$98.00 typical visit price
range $17.72 – $137.41
Typical copayment $24.50 (range $4.43 – $34.35)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

Hospitalist
19829 N 27TH AVE
PHOENIX, AZ 85027
Hospitalist
19829 N 27TH AVE, HOSPITALIST OFFICE
PHOENIX, AZ 85027
Radiology (Diagnostic Radiology)
19829 N 27TH AVE
PHOENIX, AZ 85027
Hospitalist
19829 N 27TH AVE
PHOENIX, AZ 85027
Nurse Practitioner
19829 N 27TH AVE
PHOENIX, AZ 85027
Radiology (Diagnostic Radiology)
19829 N 27TH AVE
PHOENIX, AZ 85027
Emergency Medicine
19829 N 27TH AVE
PHOENIX, AZ 85027
Radiology (Diagnostic Radiology)
19829 N 27TH AVE
PHOENIX, AZ 85027

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 Mary Mylchreest's NPI number?

The NPI number for Mary Mylchreest is 1497575039. It was assigned to this individual provider in the NPPES registry on October 16, 2024. The provider is also known as Mary Elizabeth Grades Rn.

Where is Mary Mylchreest located?

Mary Mylchreest practices at 19829 N 27th Ave, Phoenix, AZ 85027. The listed phone number is (623) 879-6100.

What is Mary Mylchreest's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Mary Mylchreest enrolled in Medicare?

Yes. Mary Mylchreest 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 organization bills Medicare for Mary Mylchreest's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Mylchreest reassigns Medicare benefits to Honorhealth Ambulatory (Phoenix, 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 Mary Mylchreest's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mary Mylchreest accept?

Health plans from Ambetter from Arizona Complete Health, Blue Cross Blue Shield of Arizona, Cigna HealthCare of Arizona, Inc and Oscar Health Plan, Inc. list Mary Mylchreest 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 Mary Mylchreest was last updated on December 11, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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.