NPPES file of Aug 9, 2026

Michael David Walker

Psychiatric/Mental Health Nurse Practitioner · Knoxville, TN

Michael David Walker is a psychiatric/mental health nurse practitioner with a practice address in Knoxville, Tennessee, and NPI 1588272611, issued on Jul 15, 2020. Check the license (Tennessee 30068, as entered in NPPES) with the Tennessee board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1588272611
Name
Michael David Walker
Primary taxonomy
Psychiatric/Mental Health Nurse Practitioner 363LP0808X
License numbers
30068 TN
0000207379 TN
RN207379 TN
Self-reported in NPPES; status is on the state search
Practice location
2018 Western Ave, Knoxville, TN 37921
Phone
(865) 544-0406
Enumerated
Jul 15, 2020
Record last updated
Aug 12, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20210917001481); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 2018 Western Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Manal Abbas, PHLEBOTOMISTPhlebotomy Technician1801457866
  2. Melinda Adams, R.N.Registered Nurse1134667785
  3. Magon Adams Shirley, PSY.D.Student in an Organized Health Care Education/Training Program1518356021
  4. Pamela Adkins, CNANurse's Aide1780422253
  5. Deborah Allen, M.D.Internal Medicine Physician1942237474
  6. Mykenzi Allison, MAStudent in an Organized Health Care Education/Training Program1427948710

Verify Michael David Walker in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Tennessee board licenses this profession
    Search for license 30068
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Tennessee license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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3.6 times the Medicare Part D claims of the average psychiatric/mental health nurse practitioner in 2024

3,239 Medicare Part D claims for 209 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.

  1. Michael Walker3,239
  2. Specialty average906

Most prescribed

  1. Lamotrigine236 claims
  2. Aripiprazole176 claims
  3. Quetiapine Fumarate167 claims
  4. Trazodone Hcl167 claims
  5. Bupropion Xl146 claims
  6. Buspirone Hcl139 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $493.86

19 payments; by number, the most common kind was food and beverage; the largest payer was Iti, Inc. (d/b/a Intra-Cellular Therapies, Inc.). The 23,362 providers of this specialty with any payment received $1,027.77 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Michael Walker$493.86
  2. Specialty average$1,027.77

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Behavioral Medicine Institute PCKnoxville, TN

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Michael David Walker among 1,611 psychiatric/mental health nurse practitioner records in Tennessee

Michael David Walker is one of 1,611 psychiatric/mental health nurse practitioner records with a practice address in Tennessee. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 47% of them.

  • NPI issued2020 · 47% of these records are older, 46% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 58% of these records are
  • Graduated2021 · median 2020 among the 929 with a school on file
  • Record last updated2021 · 25% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

184 psychiatric/mental health nurse practitioner records list a practice address in Knoxville

They are 184 of the 14,339 NPPES records with a practice address in Knoxville, and 1,611 psychiatric/mental health nurse practitioner records in Tennessee.

The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes

  1. Sarah Bannister, APNKnoxville, TN 379211700178258
  2. Van Blackaby, PMHNP-BCKnoxville, TN 379211205272010
  3. Regan Christenson, APNKnoxville, TN 379211548491798
  4. Jennifer Darby, APRNKnoxville, TN 379211518104397
  5. Michael Garey, APRNKnoxville, TN 379211366967622
  6. Ingrid Gurney, REGISTERED NURSEKnoxville, TN 379211518991298
  7. Tara LundyKnoxville, TN 379211477115749
  8. Justin Mynatt, PMHNP-BCKnoxville, TN 379211215371299

Common questions

What is Michael David Walker's NPI number?

Michael David Walker's National Provider Identifier (NPI) is 1588272611, issued on Jul 15, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Michael David Walker located?

The NPPES record lists a practice address at 2018 Western Ave, Knoxville, TN, 37921. Phone: (865) 544-0406. Providers update this record themselves, so call before visiting.

How can I verify Michael David Walker's license?

NPPES lists Tennessee license number 30068, as entered by the provider. Search the Tennessee board that licenses this profession; the NPPES record confirms identity only.

How much does Michael David Walker prescribe under Medicare Part D?

In 2024, Michael David Walker had 3,239 Medicare Part D claims for 209 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.