Treg Allen Thomas, PSY.D.
Clinical Psychologist · Grand Rapids, MI
Treg Allen Thomas, PSY.D. is a clinical psychologist with a practice address in Grand Rapids, Michigan, and NPI 1871963611, issued on Oct 6, 2015. Check the license (Michigan 6301016860, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Treg Allen Thomas
- Credential
- PSY.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- 6301016860 MI
Self-reported in NPPES; status is on the state search - Practice location
- 4100 Lake Dr SE Ste B01, Grand Rapids, MI 49546
- Phone
- (616) 267-7400
- Enumerated
- Oct 6, 2015
- Record last updated
- Mar 3, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20171219003139); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 2,965 in Michigan → Look up another NPI →
Also registered at 4100 Lake Dr SE Ste B01
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Randall Brady, PAPhysician Assistant1396798542
- Mary Dagen, M.D.Family Medicine Physician1831341130
- Lucas Friedli, DOFamily Medicine Physician1013571207
- Lindsey Hunt, PHDClinical Psychologist1457857203
- Sydney Kelpin, PHDClinical Psychologist1467102244
- Nathan Marlowe, PA-CPhysician Assistant1841829033
Verify Treg Allen Thomas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license 6301016860Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Spectrum Health Primary Care PartnersHastings, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Treg Allen Thomas among 2,965 clinical psychologist records in Michigan
Treg Allen Thomas, PSY.D. 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. Its NPI, issued in 2015, is newer than 66% of them.
- NPI issued2015 · 66% of these records are older, 30% newer
- In a Medicare fileYes · 13% of these records are
- In the CMS Doctors and Clinicians fileYes · 24% of these records are
- Graduated2008 · median 2005 among the 697 with a school on file
- Record last updated2021 · 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).
183 clinical psychologist records list a practice address in Grand Rapids
They are 183 of the 18,005 NPPES records with a practice address in Grand Rapids, and 2,965 clinical psychologist records in Michigan.
All 2,965 in Michigan → Every provider in Grand Rapids → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Theresa Anderson-Varney, PHDGrand Rapids, MI 495461760489793
- Dorothy Garnett, MA LLPGrand Rapids, MI 495461427028463
- David Hamilton, PSYDGrand Rapids, MI 495461326008483
- M Kay Hannah, PHD LLPGrand Rapids, MI 495461336119379
- Barbara Homrich, MA LLPGrand Rapids, MI 495461760469027
- Theodore Jansma, PHDGrand Rapids, MI 495461316924525
- Michael Makedonsky, PHDGrand Rapids, MI 495461760466056
- Lori Reineke, PH.D.Grand Rapids, MI 495461790765170
Common questions
What is Treg Allen Thomas, PSY.D.'s NPI number?
Treg Allen Thomas, PSY.D.'s National Provider Identifier (NPI) is 1871963611, issued on Oct 6, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Treg Allen Thomas, PSY.D. located?
The NPPES record lists a practice address at 4100 Lake Dr SE Ste B01, Grand Rapids, MI, 49546. Phone: (616) 267-7400. Providers update this record themselves, so call before visiting.
How can I verify Treg Allen Thomas, PSY.D.'s license?
NPPES lists Michigan license number 6301016860, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.
What is Treg Allen Thomas, PSY.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.