Gregory L. Flentje, M.D. PHD
Child & Adolescent Psychiatry Physician · Kentwood, MI
Gregory L. Flentje, M.D. PHD is a child & adolescent psychiatry physician with a practice address in Kentwood, Michigan, and NPI 1669405163, issued on Jul 8, 2006. Check the license (Michigan 4301078568, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Gregory L. Flentje
- Credential
- M.D. PHD
- Primary taxonomy
- Child & Adolescent Psychiatry Physician 2084P0804X
- License number
- 4301078568 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1403 60TH St SE, Kentwood, MI 49508
- Phone
- (616) 719-4488
- Enumerated
- Jul 8, 2006
- Record last updated
- Jun 24, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (616) 719-4480
- Entity
- Type 1 · individual
8 nearest child & adolescent psychiatry physician records → All 149 in Michigan → Look up another NPI →
Also registered at 1403 60TH St SE
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marissa BultsmaClinical Social Worker1407708969
- Randall Christenson, MDGeriatric Psychiatry Physician1144253642
- Joshua Colby, M.A, LPC, CAADCProfessional Counselor1093943169
- Lee Deckrow, LMSWClinical Social Worker1891800868
- Philip Fox, MDPsychiatry Physician1013976596
- Nicole Mick, LMSWClinical Social Worker1164091567
Verify Gregory L. Flentje in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301078568Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average child & adolescent psychiatry physician in 2024
62 Medicare Part D claims for 23 beneficiaries, against an average of 504 among the 3,545 providers of this specialty who prescribed in Part D.
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.
Gregory L. Flentje among 149 child & adolescent psychiatry physician records in Michigan
Gregory L. Flentje, M.D. PHD is one of 149 child & adolescent psychiatry physician records with a practice address in Michigan. 54% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 63% newer
- In a Medicare fileYes · 54% of these records are
- In the CMS Doctors and Clinicians fileNo · 36% of these records are
- Record last updated2010 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0804X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Child & Adolescent Psychiatry Physician providers in Michigan
There are 149 child & adolescent psychiatry physician records in Michigan.
All 149 in Michigan → Every provider in Kentwood → Child & Adolescent Psychiatry Physician nationwide →
The 8 child & adolescent psychiatry physician records with the nearest ZIP codes
- Elizabeth Wielgus, MDGrand Rapids, MI 495061700438801
- Karen Leavitt, MDGrand Rapids, MI 495121427210418
- Janice Coates, DOGrand Rapids, MI 495031063575744
- Tatjana Maric, MDGrand Rapids, MI 495031164712055
- Nancy Pattison, MDGrand Rapids, MI 495031235351339
- Subodh Jain, MDGrand Rapids, MI 495251033341888
- Kelly Krcmarik, M.D.Grand Rapids, MI 495251467870394
- Philip Haines, M.D.Grand Rapids, MI 495461679633994
Common questions
What is Gregory L. Flentje, M.D. PHD's NPI number?
Gregory L. Flentje, M.D. PHD's National Provider Identifier (NPI) is 1669405163, issued on Jul 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory L. Flentje, M.D. PHD located?
The NPPES record lists a practice address at 1403 60TH St SE, Kentwood, MI, 49508. Phone: (616) 719-4488. Providers update this record themselves, so call before visiting.
How can I verify Gregory L. Flentje, M.D. PHD's license?
NPPES lists Michigan license number 4301078568, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory L. Flentje, M.D. PHD prescribe under Medicare Part D?
In 2024, Gregory L. Flentje, M.D. PHD had 62 Medicare Part D claims for 23 beneficiaries; the average among child & adolescent psychiatry physician prescribers was 504. 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.