Doctor profile · Federal record
Dr. Mark Devries, PH.D.
Clinical Neuropsychologist (CMS: Clinical Psychologist) · Psychologist · Grand Rapids, MI
- NPI 1265476220
- Accepts Medicare
- 34 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
300 68Th St Se
Grand Rapids, MI 495486927
(616) 455-5000 - Additional location
-
30 Jefferson Ave Se
Grand Rapids, MI 495034304
(616) 303-1313 - Mailing address
-
1055 Rosalie Ave Nw
Grand Rapids, MI 495043720
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- February 23, 2026
- Year of graduation
- 1992 — 34 yrs since
- Specialty taxonomy
- 103G00000X — NUCC code
- State license (1)
- Michigan #6301008596
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1265476220. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
56
Distinct HCPCS
3
Medicare allowed
$6,477
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
96133 |
Evaluation of neuropsychological test, each additional hour | 32 | 11 | $93 | |
90791 |
Psychiatric diagnostic evaluation | 13 | 13 | $166 | |
96132 |
Evaluation of neuropsychological test, first hour | 11 | 11 | $123 |
In context: peer comparison
Among 9 peers in Grand Rapids Clinical Neuropsychologist, average services per provider: 44. This provider delivers 1.3× the peer median.Frequently asked questions
What is Dr. Mark Devries's medical specialty?
Dr. Mark Devries practices Clinical Neuropsychologist in Grand Rapids, MI.
Where does Dr. Mark Devries practice?
Dr. Mark Devries practices at 300 68Th St Se, Grand Rapids, MI 495486927. Office phone: 6164555000.
What is Dr. Mark Devries's NPI?
Dr. Mark Devries's National Provider Identifier (NPI) is 1265476220, issued by NPPES.
Does Dr. Mark Devries accept Medicare assignment?
Yes. Dr. Mark Devries accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Devries commonly perform?
Top Medicare-reported procedures in 2023: Evaluation of neuropsychological test, each additional hour (HCPCS 96133); Psychiatric diagnostic evaluation (HCPCS 90791); Evaluation of neuropsychological test, first hour (HCPCS 96132). Source: CMS Medicare Physician & Other Practitioners file.