Matthew Walker, DNP, APRN, CNP
NPI 1588186928 · Psychiatric/Mental Health Nurse Practitioner · Quincy, IL
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Walker, DNP, APRN, CNP is a Psychiatric/Mental Health Nurse Practitioner provider in Quincy, IL (NPI 1588186928).
Provider details
- NPI number
- 1588186928
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- DNP, APRN, CNP
- Sex
- Male
- Sole proprietor
- No
- License
- 2017023152 (MO)
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 tenure33% of score
8 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Buspirone Hcl | 190 | 40 |
| Duloxetine Hcl | 141 | 25 |
| Trazodone Hcl | 123 | 22 |
| Bupropion Hclbrand: Bupropion Xl | 87 | 19 |
| Fluoxetine Hcl | 86 | 16 |
| Lamotrigine | 84 | 13 |
| Sertraline Hcl | 80 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$432 across 33 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
Registry dates
- Enumerated
- 2017-07-07
- Last updated
- 2022-12-08
- Certified
- 2022-12-08
Frequently asked questions
- What is Matthew Walker's NPI number?
- Matthew Walker's National Provider Identifier (NPI) is 1588186928, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Walker's specialty?
- Matthew Walker is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Matthew Walker located?
- Matthew Walker's practice location on file with NPPES is 1025 Maine St, Quincy, IL 62301-4096.
- What is Matthew Walker's phone number?
- The practice phone number listed in the NPPES registry for Matthew Walker is (217) 222-6550.
- Does Matthew Walker accept Medicare?
- Matthew Walker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Walker's NPI active?
- Yes — Matthew Walker's NPI (1588186928) is active in the NPPES registry as of the last update on 2022-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.