Doctor profile · Federal record
Dr. James Diekema, PA-C
Physician Assistant · Grand Rapids, MI
- NPI 1619080702
- Accepts Medicare
- 29 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
100 Michigan St Ne
Grand Rapids, MI 495032560
(616) 391-1680 - Mailing address
-
2537 Momentum Pl
Chicago, IL 606895325
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- November 2, 2011
- Year of graduation
- 1997 — 29 yrs since
- Specialty taxonomy
- 363A00000X — NUCC code
- State license (1)
- Michigan #5601002769
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1619080702. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
207
Distinct HCPCS
6
Medicare allowed
$16,941
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99203 |
New patient office or other outpatient visit, 30-44 minutes | 56 | 56 | $90 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 51 | 49 | $73 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 33 | 33 | $135 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 31 | 30 | $103 | |
81003 |
Automated urinalysis test | 22 | 21 | $2 | |
87426 |
Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus | 14 | 14 | $35 |
In context: peer comparison
Among 234 peers in Grand Rapids Physician Assistant, average services per provider: 56. This provider delivers 3.7× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
347
Patients
317
Total drug cost
$4,391
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Cephalexin | Generic | 90 | 85 | $1,085 |
| Prednisone | Generic | 67 | 66 | $298 |
| Cefdinir | Generic | 50 | 50 | $1,021 |
| Doxycycline Monohydrate | Generic | 42 | 40 | $732 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 36 | 36 | $409 |
| Fluticasone Propionate | Generic | 23 | 23 | $215 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 17 | 17 | $539 |
| Fluconazole | Generic | 11 | 0 | $46 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 11 | 0 | $47 |
Frequently asked questions
What is Dr. James Diekema's medical specialty?
Dr. James Diekema practices Physician Assistant in Grand Rapids, MI.
Where does Dr. James Diekema practice?
Dr. James Diekema practices at 100 Michigan St Ne, Grand Rapids, MI 495032560. Office phone: 6163911680.
What is Dr. James Diekema's NPI?
Dr. James Diekema's National Provider Identifier (NPI) is 1619080702, issued by NPPES.
Does Dr. James Diekema accept Medicare assignment?
Yes. Dr. James Diekema accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. James Diekema commonly perform?
Top Medicare-reported procedures in 2023: New patient office or other outpatient visit (HCPCS 99203); Established patient office or other outpatient visit (HCPCS 99213); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.