JAMES M DIEKEMA (PA-C) – Physician Assistant, NPI 1619080702
Physician Assistant
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
6,069 PHYSICIAN ASSISTANT in MI
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Provider Addresses for JAMES M DIEKEMA (PA-C)
2537 MOMENTUM PL
CHICAGO, IL 606895325
Phone: (616) 975-1845
Fax: (616) 285-0846
Type: Mailing
Spectrum Health Butterworth Hospital, 100, Michigan Street Northeast, Grand Rapids, Kent County, Michigan, 49503, United States
GRAND RAPIDS, MI 495032560
Phone: (616) 391-1680
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2010-08-18
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20040220000959 | I | Physician Assistant | MI | TBD |
| I20100818000299 | I | Physician Assistant | IN | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99203 | New patient office or other outpatient visit, 30-44 minutes | 56 | 56 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 51 | 49 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 33 | 33 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 31 | 30 | $0 |
| 81003 | Automated urinalysis test | 22 | 21 | $0 |
Insurance plans in this area (ZIP 60689)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | FL | |
| Physician Assistant | NC | |
| Physician Assistant | MI | |
| - | IN | |
| Nurse Practitioner | MI | |
| Nurse Practitioner | MI | |
| Physician Assistant | MI | |
| Nurse Practitioner | MI | |
| Internal Medicine | IL | |
| Nurse Practitioner | IN |
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