Trisha Phemister, NP
NPI 1457017063 · Psychiatric/Mental Health Nurse Practitioner · Carterville, IL
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Trisha Phemister, NP is a Psychiatric/Mental Health Nurse Practitioner provider in Carterville, IL (NPI 1457017063).
Provider details
- NPI number
- 1457017063
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 209024210 (IL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
4 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
169 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 145 | $94 |
| Psychiatric Diagnostic Evaluation With Medical Services90792 | 24 | $152 |
Typical Medicare-allowed amounts for these services range $94–$152 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Esketamine Hclbrand: Spravato | 163 | — |
| Clonazepam | 88 | 12 |
| Alprazolam | 66 | 13 |
| Lamotrigine | 60 | — |
| Sertraline Hcl | 57 | 11 |
| Duloxetine Hcl | 43 | — |
| Mirtazapine | 41 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,625 across 156 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 310 W Plaza DrCarterville, IL 62918-1980Phone: (618) 985-4344Fax: (618) 985-6469
Registry dates
- Enumerated
- 2021-11-09
- Last updated
- 2024-08-28
- Certified
- 2024-08-28
Frequently asked questions
- What is Trisha Phemister's NPI number?
- Trisha Phemister's National Provider Identifier (NPI) is 1457017063, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Trisha Phemister's specialty?
- Trisha Phemister is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Trisha Phemister located?
- Trisha Phemister's practice location on file with NPPES is 308 W Plaza Dr, Carterville, IL 62918-2095.
- What is Trisha Phemister's phone number?
- The practice phone number listed in the NPPES registry for Trisha Phemister is (618) 985-4344.
- Does Trisha Phemister accept Medicare?
- Trisha Phemister is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Trisha Phemister's NPI active?
- Yes — Trisha Phemister's NPI (1457017063) is active in the NPPES registry as of the last update on 2024-08-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.