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MARY ELIZABETH STEINER FNP-C, PMHNP-C
NPI 1831557958
Nurse Practitioner - Family in Mesa, AZ

Active since February 03, 2016PECOS EnrolledAccepts Medicare Assignment

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

Record update history: Aug 18, 2026, Sep 2, 2025, Aug 4, 2025 and 3 more (6 updates tracked since 2016).

About Mary Elizabeth Steiner Fnp-c, Pmhnp-c NPPES

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

MARY ELIZABETH STEINER FNP-C, PMHNP-C (NPI 1831557958) is an individual family provider in Mesa, Arizona, licensed in Arizona (AP8398) and active in the NPI registry since February 2016. She is enrolled in Medicare PECOS and is a graduate of Other (2024).

NPPES Registry Identity

NPI1831557958
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMARY ELIZABETH STEINERCredential: FNP-C, PMHNP-C
Location Address2711 S GORDONMesa, AZ 85209-7349
Mailing Address2711 S GordonMesa, AZ 85209-7349 · (480) 748-9823
Phone(480) 748-9823
Sole ProprietorNo
Medical School CMSOtherGraduated 2024
Enumeration DateFebruary 3, 2016
Last NPPES UpdateAugust 18, 20266 updates tracked since enumeration
NPPES CertifiedAugust 18, 2026
✔ NPI 1831557958 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 · AP8398
Also ListedNurse Practitioner · Psychiatric/Mental HealthTaxonomy 363LP0808X · License AP8398 (AZ)
2711 S GORDON, Mesa, AZ 85209
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Antidote Health Plan of Arizona, Inc., Blue Cross Blue Shield of Arizona and more.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 Steiner Fnp-c, Pmhnp-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 ID5294031894
PECOS Enrollment IDI20160308001553
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 Reassignments

3

Medicare enrollment records show Mary Steiner reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Unchained-Gilbert LLC
8.6 mi
Psychiatry
201 W GUADALUPE RD STE 302
Gilbert, AZ 85233
  • Reassigned Medicare billing, Arizona enrollment
  • 2 clinicians in this Medicare group
NPI 1578274346 (480) 536-9473
Global Pain Solutions PLLC
20 mi
Pain Medicine
9500 E IRONWOOD SQUARE DR STE 125
Scottsdale, AZ 85258
  • Reassigned Medicare billing, Arizona enrollment
  • 2 clinicians in this Medicare group
NPI 1912885195 (602) 295-6578
Arizona Spine And Pain Specialists LLC
38 mi
Interventional Pain Medicine
7200 W BELL RD, STE F-101
Glendale, AZ 85308
  • Reassigned Medicare billing, Arizona enrollment
  • 39 clinicians in this Medicare group
NPI 1336552140 (602) 795-8700

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 7

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
612 services98 patients
Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301
Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.
140 services16 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
127 services69 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
45 services45 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
37 services29 patients
Injection of trigger points, 1-2 muscles 20552
Trigger point injection is a procedure used to treat painful areas of muscle that contain trigger points, or knots of muscle that form when muscles do not relax. 1-2 muscles are typically treated in one session. The procedure involves injecting medications into these points to alleviate pain.
29 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85209 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.

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 Steiner's NPI number?

The NPI number for Mary Steiner is 1831557958. It was assigned to this individual provider in the NPPES registry on February 3, 2016.

Where is Mary Steiner located?

Mary Steiner practices at 2711 S Gordon, Mesa, AZ 85209. The listed phone number is (480) 748-9823.

What is Mary Steiner's specialty?

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

Is Mary Steiner enrolled in Medicare?

Yes. Mary Steiner 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 Mary Steiner's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Steiner reassigns Medicare benefits to 3 organizations: Unchained-Gilbert LLC (Gilbert, AZ), Global Pain Solutions PLLC (Scottsdale, AZ) and Arizona Spine And Pain Specialists LLC (Glendale, 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 Mary Steiner's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mary Steiner accept?

Health plans from Ambetter from Arizona Complete Health, Antidote Health Plan of Arizona, Inc., Blue Cross Blue Shield of Arizona and Cigna HealthCare of Arizona, Inc list Mary Steiner 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 Steiner was last updated on August 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.