NPPES file of Aug 9, 2026

William L. Parker, PHD

Counseling Psychologist · Grand Rapids, MI

William L. Parker, PHD is a counseling psychologist with a practice address in Grand Rapids, Michigan, and NPI 1093926198, issued on May 24, 2007. Check the license (Michigan 6301007243, 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
1093926198
Name
William L. Parker
Credential
PHD
Primary taxonomy
Counseling Psychologist 103TC1900X
License number
6301007243 MI
Self-reported in NPPES; status is on the state search
Practice location
2894 Thornapple River Dr SE, Grand Rapids, MI 49546
Phone
(616) 285-6080
Enumerated
May 24, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(616) 285-5466
Medicare enrollment
Enrolled (PECOS I20131115001517); 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 2894 Thornapple River Dr SE

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

  1. Marianne Dunn, PSY.D.Clinical Psychologist1174740088
  2. Charles Grayson, PH.D.Psychologist1942405303
  3. Holly Perkins, M.D.Psychiatry Physician1669546537

Verify William L. Parker 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 6301007243
    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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William L. Parker among 579 counseling psychologist records in Michigan

William L. Parker, PHD is one of 579 counseling psychologist records with a practice address in Michigan. 4% 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 2007, is newer than 15% of them.

  • NPI issued2007 · 15% of these records are older, 70% newer
  • In a Medicare fileNo · 4% of these records are
  • In the CMS Doctors and Clinicians fileYes · 9% of these records are
  • Graduated1987 · median 2007 among the 50 with a school on file
  • Record last updated2007 · 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 103TC1900X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Counseling Psychologist providers in Michigan

There are 579 counseling psychologist records in Michigan. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

The 8 counseling psychologist records with the nearest ZIP codes

  1. Joel Bartlett, LLPGrand Rapids, MI 495461306277926
  2. Harley Dorman, ED.D.Grand Rapids, MI 495461336282722
  3. Kizombo Kalumbula, PH.D. (C)Grand Rapids, MI 495461851427124
  4. Erica Koetsier, M.A., TLLPGrand Rapids, MI 495461215366174
  5. Ardrace MorrisGrand Rapids, MI 495461114598240
  6. Melissa Muir, LLPGrand Rapids, MI 495461124474820
  7. Mary Oppenhuizen, ED.D.Grand Rapids, MI 495461609924141
  8. Israel Ostrander, D-TLLPGrand Rapids, MI 495461336711480

Common questions

What is William L. Parker, PHD's NPI number?

William L. Parker, PHD's National Provider Identifier (NPI) is 1093926198, issued on May 24, 2007. An NPI identifies a provider in billing; it is not a license.

Where is William L. Parker, PHD located?

The NPPES record lists a practice address at 2894 Thornapple River Dr SE, Grand Rapids, MI, 49546. Phone: (616) 285-6080. Providers update this record themselves, so call before visiting.

How can I verify William L. Parker, PHD's license?

NPPES lists Michigan license number 6301007243, 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.

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.