Doctor profile · Federal record
Dr. Eric Willmarth, PHD
Clinical Psychologist · Grand Rapids, MI
- NPI 1275638041
- Accepts Medicare
- 27 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
4100 Lake Dr Se, Ste 305
Grand Rapids, MI 49546
(616) 285-1377
fax (616) 285-1006 - Mailing address
-
61 Commerce Ave Sw
Grand Rapids, MI 495034124
Credentials & registration
- NPI registered
- September 2006 — 20 yrs on file
- Profile last updated
- November 19, 2008
- Year of graduation
- 1999 — 27 yrs since
- Specialty taxonomy
- 103TC0700X — NUCC code
- State license (1)
- Michigan #6301002796
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1275638041. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
308
Distinct HCPCS
3
Medicare allowed
$39,370
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
90791 |
Psychiatric diagnostic evaluation | 133 | 133 | $159 | |
96130 |
Evaluation of psychological test, first hour | 132 | 130 | $111 | |
90834 |
Psychotherapy, 45 minutes | 43 | 12 | $85 |
In context: peer comparison
Among 8 peers in Grand Rapids Clinical Psychologist, average services per provider: 82. This provider delivers 3.8× the peer median.Frequently asked questions
What is Dr. Eric Willmarth's medical specialty?
Dr. Eric Willmarth practices Clinical Psychologist in Grand Rapids, MI.
Where does Dr. Eric Willmarth practice?
Dr. Eric Willmarth practices at 4100 Lake Dr Se, Grand Rapids, MI 49546. Office phone: 6162851377.
What is Dr. Eric Willmarth's NPI?
Dr. Eric Willmarth's National Provider Identifier (NPI) is 1275638041, issued by NPPES.
Does Dr. Eric Willmarth accept Medicare assignment?
Yes. Dr. Eric Willmarth accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Eric Willmarth commonly perform?
Top Medicare-reported procedures in 2023: Psychiatric diagnostic evaluation (HCPCS 90791); Evaluation of psychological test, first hour (HCPCS 96130); Psychotherapy (HCPCS 90834). Source: CMS Medicare Physician & Other Practitioners file.