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MS. DIANE MARIE SHALLCROSS APRN, FPA, PMHNP-BC
NPI 1629736285
Nurse Practitioner - Psychiatric/Mental Health in Saint Charles, IL

Active since December 01, 2021PECOS Enrolled
218 STATE ST STE B, SAINT CHARLES, IL 60174(815) 893-9417(224) 276-7254 Get Directions Write a Review

NPPES record last updated: May 1, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Dec 13, 2024, Feb 22, 2022, Dec 1, 2021 (3 updates tracked since 2021).

About Ms. Diane Marie Shallcross Aprn, Fpa, Pmhnp-bc NPPES

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

MS. DIANE MARIE SHALLCROSS APRN, FPA, PMHNP-BC (NPI 1629736285) is an individual psychiatric/mental health provider in Saint Charles, Illinois, licensed in Illinois (277.003222) and active in the NPI registry since December 2021. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1629736285
Entity TypeIndividualFemale
Primary Taxonomy363LP0808X
Provider Legal NameMS. DIANE MARIE SHALLCROSSCredential: APRN, FPA, PMHNP-BC
Location Address218 STATE ST STE BSaint Charles, IL 60174-1841
Mailing Address218 State St Ste BSaint Charles, IL 60174-1841 · (847) 341-0297
Phone(815) 893-9417
Fax(224) 276-7254
Sole ProprietorNo
Enumeration DateDecember 1, 2021
Last NPPES UpdateMay 1, 20253 updates tracked since enumeration
NPPES CertifiedMay 1, 2025
✔ NPI 1629736285 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in IL · 277.003222
218 STATE ST STE B, Saint Charles, IL 60174
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ms. Diane Marie Shallcross Aprn, Fpa, Pmhnp-bc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

2

Medicare enrollment records show Diane Shallcross reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Reasons Health, PLLC
23 mi
Social Worker
333 COMMERCE DR
Crystal Lake, IL 60014
  • Reassigned Medicare billing, Illinois enrollment
  • 9 clinicians in this Medicare group
NPI 1174387195 (815) 404-0595
Grow Healthcare Group PA
1,205 mi
Mental Health
66 W FLAGLER ST STE 900
Miami, FL 33130
  • Reassigned Medicare billing, Illinois enrollment
  • 581 clinicians in this Medicare group
NPI 1245845932 (786) 244-7711

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 60174 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
$93.02 typical visit price
range $59.81 – $181.38
Typical copayment $23.25 (range $14.95 – $45.34)
Most-billed visit code 99203
Established Patient
$105.07 typical visit price
range $19.15 – $147.12
Typical copayment $26.26 (range $4.78 – $36.78)
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 Diane Shallcross's NPI number?

The NPI number for Diane Shallcross is 1629736285. It was assigned to this individual provider in the NPPES registry on December 1, 2021.

Where is Diane Shallcross located?

Diane Shallcross practices at 218 State St Ste B, Saint Charles, IL 60174. The listed phone number is (815) 893-9417.

What is Diane Shallcross's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Diane Shallcross enrolled in Medicare?

Yes. Diane Shallcross is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Diane Shallcross's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Diane Shallcross reassigns Medicare benefits to 2 organizations: Reasons Health, PLLC (Crystal Lake, IL) and Grow Healthcare Group PA (Miami, FL). 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 Diane Shallcross's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Diane Shallcross accept?

Health plans from Oscar Health list Diane Shallcross 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 Diane Shallcross was last updated on May 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.