Gregory V. Mallis, PSY.D
Psychologist · Grand Rapids, MI
Gregory V. Mallis, PSY.D is a psychologist with a practice address in Grand Rapids, Michigan, and NPI 1780022194, issued on Jun 7, 2013. Check the license (Michigan 6301015440, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory V. Mallis
- Credential
- PSY.D
- Primary taxonomy
- Psychologist 103T00000X
- License number
- 6301015440 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1870 Leonard St SE, Grand Rapids, MI 49505
- Phone
- (616) 956-1122
- Enumerated
- Jun 7, 2013
- Record last updated
- Jun 7, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (616) 956-8033
- Medicare enrollment
- Enrolled (PECOS I20140416001116); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychologist records → All 2,549 in Michigan → Look up another NPI →
Verify Gregory V. Mallis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license 6301015440Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
One hospital affiliation
- Pine Rest Christian Mental Health ServicesGrand Rapids, MI · Psychiatric
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).
Gregory V. Mallis among 2,549 psychologist records in Michigan
Gregory V. Mallis, PSY.D is one of 2,549 psychologist records with a practice address in Michigan. 6% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 56% of them.
- NPI issued2013 · 56% of these records are older, 40% newer
- In a Medicare fileYes · 6% of these records are
- In the CMS Doctors and Clinicians fileYes · 12% of these records are
- Graduated2012 · median 1999 among the 308 with a school on file
- Record last updated2013 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
207 psychologist records list a practice address in Grand Rapids
They are 207 of the 18,005 NPPES records with a practice address in Grand Rapids, and 2,549 psychologist records in Michigan.
All 2,549 in Michigan → Every provider in Grand Rapids → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- Juan Colon, MAGrand Rapids, MI 495051689149171
- Laura Degraaf, MA, LLPGrand Rapids, MI 495051861519357
- Sera Gruszka, PHD, LPGrand Rapids, MI 495051093943359
- Ariel Juberg, MA, PSYD, LLCGrand Rapids, MI 495051639382930
- Annie Kurian, LLPGrand Rapids, MI 495051275078834
- Ian Nelson, LLPGrand Rapids, MI 495051275886426
- Sarah PatrickGrand Rapids, MI 495051790377281
- Jeffrey Reining, DR.Grand Rapids, MI 495051073949574
Common questions
What is Gregory V. Mallis, PSY.D's NPI number?
Gregory V. Mallis, PSY.D's National Provider Identifier (NPI) is 1780022194, issued on Jun 7, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Gregory V. Mallis, PSY.D located?
The NPPES record lists a practice address at 1870 Leonard St SE, Grand Rapids, MI, 49505. Phone: (616) 956-1122. Providers update this record themselves, so call before visiting.
How can I verify Gregory V. Mallis, PSY.D's license?
NPPES lists Michigan license number 6301015440, 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. 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.