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TRISHA LYNN PHEMISTER NP
NPI 1457017063
Nurse Practitioner - Psychiatric/Mental Health in Carterville, IL

Active since November 09, 2021PECOS EnrolledAccepts Medicare Assignment
75.73/100
CMS Quality Rating
308 W PLAZA DR, CARTERVILLE, IL 62918(618) 985-4344(618) 985-6469 Get Directions Write a Review

NPPES record last updated: August 28, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Feb 18, 2022, Jan 7, 2022, Nov 9, 2021 (3 updates tracked since 2021).

About Trisha Lynn Phemister Np NPPES

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

TRISHA LYNN PHEMISTER NP (NPI 1457017063) is an individual psychiatric/mental health provider in Carterville, Illinois, licensed in Illinois (209024210) and active in the NPI registry since November 2021. She is enrolled in Medicare PECOS, maintains a secondary practice location in Carterville, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1457017063
Entity TypeIndividualFemale
Primary Taxonomy363LP0808X
Provider Legal NameTRISHA LYNN PHEMISTERCredential: NP
Location Address308 W PLAZA DRCarterville, IL 62918-2095
Mailing Address308 W Plaza DrCarterville, IL 62918-2095 · (618) 985-4344 · Fax (618) 985-6469
Phone(618) 985-4344
Fax(618) 985-6469
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateNovember 9, 2021
Last NPPES UpdateAugust 28, 20243 updates tracked since enumeration
NPPES CertifiedAugust 28, 2024
✔ NPI 1457017063 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in IL · 209024210
Also ListedNurse PractitionerTaxonomy 363L00000X · License 209024210 (IL)
308 W PLAZA DR, Carterville, IL 62918
Open in Google Maps ↗

Secondary Practice Location 1

Location 1310 W Plaza DrCarterville, IL 62918-1980 · Phone (618) 985-4344 · Fax (618) 985-6469

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

Trisha Lynn Phemister 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.

PECOS PAC ID4981095957
PECOS Enrollment IDI20211230000063
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 Trisha Phemister reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Southern Illinois Medical Services, Nfp
6.2 mi
Internal Medicine
1239 E MAIN ST
Carbondale, IL 62901
  • Reassigned Medicare billing, Illinois enrollment
  • 702 clinicians in this Medicare group
NPI 1770656837 (618) 457-5200
Integrated Health Of Southern Illinois, Ltd.
30 mi
Sports Medicine
303 S COMMERCIAL ST, STE 10
Harrisburg, IL 62946
  • Reassigned Medicare billing, Illinois enrollment
  • 34 clinicians in this Medicare group
NPI 1982738274 (618) 252-5555

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 2

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.
145 services38 patients
Psychiatric diagnostic evaluation with medical services 90792
A psychiatric diagnostic evaluation with medical services is a comprehensive assessment. It includes a detailed examination of your mental health and physical wellbeing, as well as your personal and family history. This evaluation aids in creating an effective treatment plan.
24 services24 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 62918 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
$85.71 typical visit price
range $54.80 – $168.44
Typical copayment $21.42 (range $13.70 – $42.11)
Most-billed visit code 99203
Established Patient
$97.25 typical visit price
range $17.16 – $136.56
Typical copayment $24.31 (range $4.29 – $34.14)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

75.73/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality63.09
Promoting Interoperability100
Improvement Activities40
Cost45.26

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 Trisha Phemister's NPI number?

The NPI number for Trisha Phemister is 1457017063. It was assigned to this individual provider in the NPPES registry on November 9, 2021.

Where is Trisha Phemister located?

Trisha Phemister practices at 308 W Plaza Dr, Carterville, IL 62918. The listed phone number is (618) 985-4344.

What is Trisha Phemister's specialty?

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

Is Trisha Phemister enrolled in Medicare?

Yes. Trisha Phemister 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 Trisha Phemister's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Trisha Phemister reassigns Medicare benefits to 2 organizations: Southern Illinois Medical Services, Nfp (Carbondale, IL) and Integrated Health Of Southern Illinois, Ltd. (Harrisburg, IL). 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 Trisha Phemister's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Trisha Phemister was last updated on August 28, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.