NPPES file of Aug 9, 2026

David Joseph Leonard, PHD

Clinical Psychologist · Muskegon, MI

David Joseph Leonard, PHD is a clinical psychologist with a practice address in Muskegon, Michigan, and NPI 1497821144, issued on Nov 27, 2006. Check the license (Michigan 001593, as entered in NPPES) with the Michigan board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1497821144
Name
David Joseph Leonard
Credential
PHD
Primary taxonomy
Clinical Psychologist 103TC0700X
License number
001593 MI
Self-reported in NPPES; status is on the state search
Practice location
1148 4TH St, Muskegon, MI 49441
Phone
(231) 726-2299
Enumerated
Nov 27, 2006
Record last updated
Jun 24, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(231) 728-6345
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest clinical psychologist records → All 2,965 in Michigan → Look up another NPI →

Also registered at 1148 4TH St

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

  1. Stella Dial, LICENSED PSYCHOLOGISPsychologist1407914120
  2. Jessica Holmes, MAPsychologist1932795697
  3. Margaret Lowe, PSY.D.Clinical Psychologist1376726604
  4. Michelle Martin, MA LLPCounseling Psychologist1144384413
  5. Blake Martinez, M.A.Clinical Psychologist1891161964
  6. Joshua MartinezMental Health Counselor1710576434

Verify David Joseph Leonard in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Michigan board licenses this profession
    Search for license 001593    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 Michigan 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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David Joseph Leonard among 2,965 clinical psychologist records in Michigan

David Joseph Leonard, PHD is one of 2,965 clinical psychologist records with a practice address in Michigan. 13% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 2% of them.

  • NPI issued2006 · 2% of these records are older, 79% newer
  • In a Medicare fileNo · 13% of these records are
  • In the CMS Doctors and Clinicians fileNo · 24% of these records are
  • Record last updated2013 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Clinical Psychologist providers in Michigan

There are 2,965 clinical psychologist records in Michigan. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 2,965 in Michigan → Every provider in Muskegon → Clinical Psychologist nationwide →

The 8 clinical psychologist records with the nearest ZIP codes

  1. Catherine Forrest, M.A., L.L.P.Muskegon, MI 494411790835890
  2. Patricia Groessl, EDDMuskegon, MI 494411396811048
  3. Donna Lamar, PHDMuskegon, MI 494411053388413
  4. Robert Lamson, PHDMuskegon, MI 494411518934975
  5. Margaret Lowe, PSY.D.Muskegon, MI 494411376726604
  6. Blake Martinez, M.A.Muskegon, MI 494411891161964
  7. Timothy Mills, PSY.D.Muskegon, MI 494411053642660
  8. Jon Newman, PH.D.Muskegon, MI 494411619027844

Common questions

What is David Joseph Leonard, PHD's NPI number?

David Joseph Leonard, PHD's National Provider Identifier (NPI) is 1497821144, issued on Nov 27, 2006. An NPI identifies a provider in billing; it is not a license.

Where is David Joseph Leonard, PHD located?

The NPPES record lists a practice address at 1148 4TH St, Muskegon, MI, 49441. Phone: (231) 726-2299. Providers update this record themselves, so call before visiting.

How can I verify David Joseph Leonard, PHD's license?

NPPES lists Michigan license number 001593, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity 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. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.